MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


NanoCore


Vendor detections: 18


Intelligence 18 IOCs 1 YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a
SHA3-384 hash: f7ded0693b47dfaa64615754b8fddf5b450ab22e5ac554dc1797ba3e866b0658a5afae77cd15e5ca6b4141c5a7e39d53
SHA1 hash: 1a4a5d7594fbdfb3189915502a63c801a2180389
MD5 hash: 5a42e2442b79943419bf0e39ad7be827
humanhash: maryland-helium-leopard-north
File name:5a42e2442b79943419bf0e39ad7be827.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:614'400 bytes
First seen:2024-06-24 21:00:26 UTC
Last seen:2024-06-24 21:18:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'647 x AgentTesla, 19'451 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:U9PcfpbzzGwWjZK2P5VQiYwhKrmXLZNa8pKp1wFqexdCZMxZ3Q:viDj7xVQi9hOmXowFTCZQtQ
TLSH T146D4120676E9AF26DABE47F4B1536C914370642BA672F35B1FDB20DE1A31F8001A0B57
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
104.243.242.163:1620

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
104.243.242.163:1620 https://threatfox.abuse.ch/ioc/1288512/

Intelligence

File Origin
# of uploads :
2
# of downloads :
583
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
nanocore
Create hunting rule
ID:
1
File name:
b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a.exe
Verdict:
Malicious activity
Analysis date:
2024-06-24 21:03:18 UTC
Tags:
nanocore rat remote
Link:
https://app.any.run/tasks/3b82e3c2-58d3-4eb9-89a3-a8e0b23fa303

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2926.23539.28140.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6679de90ff0cdfb06de5f653win10vpnfull_triage
Tags:
Execution Generic Network Stealth Msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Creating a process with a hidden window
Launching a process
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
DNS request
Connection attempt
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed vbnet
Link:
https://www.filescan.io/uploads/6679de9221581a92819f0595/reports/a8410af8-d5dc-49cc-aa8e-82aef031ba41/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
NanoCoreRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b59db217-91d9-403d-8cc2-d81dc90fe8b9
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1462011
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1462011 Sample: 3UbbhibOy7.exe Startdate: 24/06/2024 Architecture: WINDOWS Score: 100 65 Snort IDS alert for network traffic 2->65 67 Found malware configuration 2->67 69 Malicious sample detected (through community Yara rule) 2->69 71 15 other signatures 2->71 7 3UbbhibOy7.exe 7 2->7         started        11 zzTmYAoKh.exe 5 2->11         started        13 dnshost.exe 2->13         started        process3 file4 47 C:\Users\user\AppData\Roaming\zzTmYAoKh.exe, PE32 7->47 dropped 49 C:\Users\...\zzTmYAoKh.exe:Zone.Identifier, ASCII 7->49 dropped 51 C:\Users\user\AppData\Local\...\tmp5759.tmp, XML 7->51 dropped 53 C:\Users\user\AppData\...\3UbbhibOy7.exe.log, ASCII 7->53 dropped 73 Detected Nanocore Rat 7->73 75 Uses schtasks.exe or at.exe to add and modify task schedules 7->75 77 Writes to foreign memory regions 7->77 85 3 other signatures 7->85 15 MSBuild.exe 1 10 7->15         started        20 powershell.exe 23 7->20         started        22 schtasks.exe 1 7->22         started        79 Antivirus detection for dropped file 11->79 81 Multi AV Scanner detection for dropped file 11->81 83 Machine Learning detection for dropped file 11->83 24 MSBuild.exe 3 11->24         started        26 schtasks.exe 1 11->26         started        28 conhost.exe 13->28         started        signatures5 process6 dnsIp7 57 newsddawork.3utilities.com 104.243.242.163, 1620, 49708, 49711 VOXILITYGB United States 15->57 41 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 15->41 dropped 43 C:\Program Files (x86)\DNS Host\dnshost.exe, PE32 15->43 dropped 59 Detected Nanocore Rat 15->59 61 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->61 30 WerFault.exe 15->30         started        63 Loading BitLocker PowerShell Module 20->63 33 WmiPrvSE.exe 20->33         started        35 conhost.exe 20->35         started        37 conhost.exe 22->37         started        45 C:\Users\user\AppData\...\MSBuild.exe.log, ASCII 24->45 dropped 39 conhost.exe 26->39         started        file8 signatures9 process10 file11 55 C:\ProgramData\Microsoft\...\Report.wer, Unicode 30->55 dropped
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2024-06-20 12:45:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wre3ec4vzfgndxdxudw327vyygbtsl7qxo2t6lfdotist5nm4ifa._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore execution keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240624-ztvsrsvhjp/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Command and Scripting Interpreter: PowerShell
NanoCore
Malware Config
C2 Extraction:
newsddawork.3utilities.com:1620
maxlogs.webhop.me:1620
Unpacked files
SH256 hash:
f9b8c3f31375e9a1ec105f930f751869a804110d29d6b38e7298622eb74b2bec
MD5 hash:
42006852619847f368bc4062849cd6dc
SHA1 hash:
ba6edc3a5aba8eac15b6a30e1407cdae80b2481d
Link:
https://www.unpac.me/results/6b3bd24e-749f-497e-a61b-5958e11d498b/
SH256 hash:
01e3b18bd63981decb384f558f0321346c3334bb6e6f97c31c6c95c4ab2fe354
MD5 hash:
9c8242440c47a4f1ce2e47df3c3ddd28
SHA1 hash:
874f3caf663265f7dd18fb565d91b7d915031251
Detections:
Nanocore_RAT_Feb18_1
Create hunting rule
Nanocore_RAT_Gen_2
Create hunting rule
MALWARE_Win_NanoCore
Create hunting rule
Link:
https://www.unpac.me/results/6b3bd24e-749f-497e-a61b-5958e11d498b/
Parent samples :
496bbeff36c20e17f2967fb96527b48ab329d1cac12347fdbd8692c46dd36786
91434e57f158bb81625776231e38663bbf467f0bec3048d4c49ed36461ed4724
674427173a5e079caa90209387e6131f19ebafea2f2a0b7c580fa8ea7d4eaa45
874f9ec9a67d5ecb2c131a9aa0c4738af6bc7be28dae7b47c797d8eecdd9961a
c8f3302ef072664c135d2a3049637db8ae72058f63fbfedc67dfcedebf4d236f
87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572
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340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df
6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70
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020e75bba53b32452b70c2796aabfd51dbd2c82380bf138158ad590d9db1df72
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2d487e83f730e2f03f5a39cdaf7959597abcb588533f883ae6b02eeeafe1fcf4
b56604d2a0c55a77b35a3cb6049b12f4dc2bb964f965b90b9657a00903e0d417
f99a35529d49c648c01518eb567398141b2ad7a809f88618c75b6f637cae3926
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ac7c3c0c3906c4d93e34b91fa34941277f044ac26d037c113c9756a4f18619dd
677ce0d368b44c16550269a5f337c5d8c67cf025664c614ab1add706627b0594
1ea022e39cb9cf37fbfdc1f6b2b4cd2dff64793c981312963894ecf2d34587a9
de2aae7cad657545766fd4b88337a5474434c57006e56c149bd2138fe6b035bc
a22cff1b630771a330a605a71829ad0a113446b40a38044b5b5ce55df6cc2fc8
1494410b9ffbf0bbe4efe4048c41afef4cc75c32b16f9450485e5f22f298fd3a
2688dbf43420b3799d79c51e0fc776d7dc840a2eb925f7214cdd17324b0798fe
741c421367b548b8b45e8ddeb4e8fb735c7b1bd22d4c557841eb299bc0db4bb1
SH256 hash:
61e9d5c0727665e9ef3f328141397be47c65ed11ab621c644b5bbf1d67138403
MD5 hash:
bdc8945f1d799c845408522e372d1dbd
SHA1 hash:
874b7c3c97cc5b13b9dd172fec5a54bc1f258005
Detections:
Nanocore_RAT_Feb18_1
Create hunting rule
Nanocore_RAT_Gen_2
Create hunting rule
MALWARE_Win_NanoCore
Create hunting rule
Link:
https://www.unpac.me/results/6b3bd24e-749f-497e-a61b-5958e11d498b/
Parent samples :
496bbeff36c20e17f2967fb96527b48ab329d1cac12347fdbd8692c46dd36786
91434e57f158bb81625776231e38663bbf467f0bec3048d4c49ed36461ed4724
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2d487e83f730e2f03f5a39cdaf7959597abcb588533f883ae6b02eeeafe1fcf4
b56604d2a0c55a77b35a3cb6049b12f4dc2bb964f965b90b9657a00903e0d417
f99a35529d49c648c01518eb567398141b2ad7a809f88618c75b6f637cae3926
480a1166729945af333cf8a6f5d51a4ed13ac5e4af1487ecea6e87f7aefbf656
ac7c3c0c3906c4d93e34b91fa34941277f044ac26d037c113c9756a4f18619dd
677ce0d368b44c16550269a5f337c5d8c67cf025664c614ab1add706627b0594
1ea022e39cb9cf37fbfdc1f6b2b4cd2dff64793c981312963894ecf2d34587a9
de2aae7cad657545766fd4b88337a5474434c57006e56c149bd2138fe6b035bc
a22cff1b630771a330a605a71829ad0a113446b40a38044b5b5ce55df6cc2fc8
1494410b9ffbf0bbe4efe4048c41afef4cc75c32b16f9450485e5f22f298fd3a
2688dbf43420b3799d79c51e0fc776d7dc840a2eb925f7214cdd17324b0798fe
741c421367b548b8b45e8ddeb4e8fb735c7b1bd22d4c557841eb299bc0db4bb1
SH256 hash:
d5ae4977cb06fdf57a3d77dd51102a81c5a58e328d1d5145aef04f76318babbf
MD5 hash:
7df631fbff8f29d08f8b6865757af838
SHA1 hash:
fdfabf6ec29e1b4761b24c270d9511100d3b83f2
Link:
https://www.unpac.me/results/6b3bd24e-749f-497e-a61b-5958e11d498b/
SH256 hash:
065781cbd2a583609e8b559cfab228c68fd00deca699a3c2576e5163689c665a
MD5 hash:
d8c91ccf59ccf40d3bce74a3656458c8
SHA1 hash:
9b35ebe11fbbb056381e81ae34d3306b8fed4339
Link:
https://www.unpac.me/results/6b3bd24e-749f-497e-a61b-5958e11d498b/
SH256 hash:
517a905f45d2d8fef5441758600b4f7b89af1a533abc51dcc705bb6b66c15d2d
MD5 hash:
72e1f07a5b95fa22b5845eccccfc1035
SHA1 hash:
8c3bd502f1b19c63da50c63f0b3a95e71e017fe4
Detections:
win_nanocore_w0
Create hunting rule
Nanocore_RAT_Feb18_1
Create hunting rule
Nanocore_RAT_Gen_2
Create hunting rule
Nanocore
Create hunting rule
MALWARE_Win_NanoCore
Create hunting rule
Link:
https://www.unpac.me/results/6b3bd24e-749f-497e-a61b-5958e11d498b/
Parent samples :
1805439355f48464312b4f9c0e16301c5f211c204e197c2000e7342c8db95c00
b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a
a3b66fd528f2728fad40ab4eb46c8f1fba303b2c3ca54088fff6223da96c483d
535a76b11d8e55c1b67db48a5e19521233c2a877f83b65fb6e7edca3257e4a55
b3ecfad7812c038effe03852fe7794bd52d291a97d858245c48ba8fd8408e131
74b5c4b71fb6634b2db9c8501147f6511a376d39dacdfd862d5cd41bf2a7cb08
SH256 hash:
5e7b6403b1f545de716a736cd497b836a527b2c0cc45f0c716830209df620e42
MD5 hash:
697819049b195f816ec9f58d21a046b2
SHA1 hash:
4eb52569d476b593fec12d5f76cad3c3591fafb5
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/6b3bd24e-749f-497e-a61b-5958e11d498b/
Parent samples :
ac7341ace222bc469a357f03c99f5bb261e4119f19650fd71aeae73dc0815340
eb79cca838f57ff5f3bf13f3bbce26859ec27d6dbcdc96ada3c2ead3ef27abf7
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0f3ced014fdbc362af044fa537e823784aa7057699041f84065de9cb24f45069
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0c7a66057004515fbac9276dcdbfb9594afd4316ebe900a9ead8d40f6008078a
df42aed98863b49a6f208ef3181f08ba5014cc3192c3a406dad6def44e4a3c14
11bd38092d7eda3842cd5a5dc3fed362d5a5146ae6228a66b8ac2693e9a81279
4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2
60761883606401d50efcb7441ee6214e4b1e90e89554ab7df2aa852a970807ae
aeed87f06c1d73acfe30d7bed14be7929caea7c5011582b8a807c8c72e88582f
68f60db69dd7b37366528129904a919dc09eef98f604447337da74fd757c5e15
857e4f74c6f7824d5c0a201bce65c2c0553657c6a095190e442d01a215a7e2df
b2674ba6829b75d6161ce5bbb523892a7ca369e8b1a0c6218b67a1a08aec22c7
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67bf84d91a5494478d5910d58170c72f85c7d778d755d003b94344a691837209
e861afaa4755a6f42c02be20ea94ea195e45b8a952928a76692bc146decb78fe
a6c97c54c4bebd6114ddcfac0414fb0d432877d2916012c8a5fc2cfb45d9346d
0903961ba7ce91a965ee42d92da305ecf174b588351dbac5bd7f53506cc5a0f3
7e67a390a2557aa2dc6f740d1b0906f74f6a9c6875800746bbeab17b2e3f0fb7
3c1f8c10253bfe7388f5d51391a2253b56e348f92ec68ad70f78a4d7f526147d
be03b9620b1ae59e5a19f50ee5526a7b9bb4174e09a79cd82a5cf108ecdfd4e1
699af4e8e4d2f3b3ab73268c846f4013f677bc183b9c561279f88c0239972b9b
fb15b15a5604f81ee72b9b4faa0160b5d49a8eda415b9a1f54416a69bb3facb0
cb5c22f0aa405129ace6079f8dea8ac27fe89377db7adfffa3c539b59990d6be
6bddff781a97f7479e290a3fb3f34c681f98af9af4ab5dbfb14006bb63223522
018b23732bcac6e2ccc7d8130259b5085d10dafdac74737e1456b5f38ee2c81e
SH256 hash:
b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a
MD5 hash:
5a42e2442b79943419bf0e39ad7be827
SHA1 hash:
1a4a5d7594fbdfb3189915502a63c801a2180389
Link:
https://www.unpac.me/results/6b3bd24e-749f-497e-a61b-5958e11d498b/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b449b20b95c9/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b449b20b95c94cd1dc77a0edbd7eb8c183392ff0bbb53f2ca374d129f5ace20a

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:ach_NanoCore
Create hunting rule
Author:abuse.ch
Rule name:malware_Nanocore_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:MALWARE_Win_NanoCore
Create hunting rule
Author:ditekSHen
Description:Detects NanoCore
Rule name:Nanocore
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:nanocore_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:Nanocore_RAT_Feb18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Nanocore RAT
Reference:Internal Research - T2T
Rule name:Nanocore_RAT_Feb18_1_RID2DF1
Create hunting rule
Author:Florian Roth
Description:Detects Nanocore RAT
Reference:Internal Research - T2T
Rule name:Nanocore_RAT_Gen_2
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detetcs the Nanocore RAT
Reference:https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Rule name:Nanocore_RAT_Gen_2_RID2D96
Create hunting rule
Author:Florian Roth
Description:Detetcs the Nanocore RAT
Reference:https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Nanocore_d8c4e3c5
Create hunting rule
Author:Elastic Security
Rule name:win_nanocore_w0
Create hunting rule
Author:Kevin Breen <kevin@techanarchy.net>

File information

The table below shows additional information about this malware sample such as delivery method and external references.

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments