MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99450e636243dad54861d58c1e62fae329b69b4c9af6ed1f53fba851d20b2fa7. 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


Formbook


Vendor detections: 12


Intelligence 12 IOCs YARA 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 99450e636243dad54861d58c1e62fae329b69b4c9af6ed1f53fba851d20b2fa7
SHA3-384 hash: a2f01ff518be0d9d616027b6c4ee45829697ffd5ea2edf90196d1cf0646b8da37ab5626b89e743fd2d9170438a374422
SHA1 hash: cb40d311ee721d2bc9631940b80a2d3bca4f2b8c
MD5 hash: ac5d56ff1732078e8a4143d632c463b2
humanhash: november-beryllium-summer-ack
File name:file.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:760'328 bytes
First seen:2024-03-22 07:21:07 UTC
Last seen:2024-03-22 09:25:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:rbs3/5QGSrwOMTUSwr1ag458jdECLSCD/HwyfRU1ftzUeTrVofy7xwaHbYDGPakR:rbwBQJiTbwr1ag42d1VrxytzUNf9u
Threatray 150 similar samples on MalwareBazaar
TLSH T181F4F089322475DFC967C8329AA85C68AB3134B7531FC217A05311EC9E4DAABDF191F3
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon c496baa4ecbaa6c4 (14 x AgentTesla, 3 x Loki, 3 x Formbook)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
326
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
99450e636243dad54861d58c1e62fae329b69b4c9af6ed1f53fba851d20b2fa7.exe
Verdict:
Malicious activity
Analysis date:
2024-03-22 07:56:17 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/8a6cbae1-b771-4013-962e-99d3ae5cdc16

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/65fd319d87137159d44e59c6/reports/655eda0d-37b3-43d9-8b1c-0ef2dd0cdab9/overview
Verdict:
Malicious
Labled as:
Lazy.Generic
Link:
https://www.hybrid-analysis.com/sample/99450e636243dad54861d58c1e62fae329b69b4c9af6ed1f53fba851d20b2fa7
Malware family:
MSIL Injector
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7f3b4569-a6e8-4e48-8237-ef31cdc86d51
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1413884
Signature
.NET source code contains potential unpacker
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1413884 Sample: file.exe Startdate: 22/03/2024 Architecture: WINDOWS Score: 100 30 www.eh28mf3cdv.xyz 2->30 32 xiaoyue.zhuangkou.com 2->32 34 13 other IPs or domains 2->34 44 Snort IDS alert for network traffic 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Multi AV Scanner detection for submitted file 2->48 52 4 other signatures 2->52 10 file.exe 3 2->10         started        signatures3 50 Performs DNS queries to domains with low reputation 30->50 process4 signatures5 64 Detected unpacking (changes PE section rights) 10->64 66 Detected unpacking (overwrites its own PE header) 10->66 68 Injects a PE file into a foreign processes 10->68 13 file.exe 10->13         started        16 file.exe 10->16         started        process6 signatures7 70 Maps a DLL or memory area into another process 13->70 18 TlQAPcgkiacTZgMtpRCXjOunF.exe 13->18 injected process8 signatures9 42 Found direct / indirect Syscall (likely to bypass EDR) 18->42 21 isoburn.exe 13 18->21         started        process10 signatures11 54 Tries to steal Mail credentials (via file / registry access) 21->54 56 Tries to harvest and steal browser information (history, passwords, etc) 21->56 58 Modifies the context of a thread in another process (thread injection) 21->58 60 2 other signatures 21->60 24 TlQAPcgkiacTZgMtpRCXjOunF.exe 21->24 injected 28 firefox.exe 21->28         started        process12 dnsIp13 36 xiaoyue.zhuangkou.com 47.76.88.64, 49722, 80 VODAFONE-TRANSIT-ASVodafoneNZLtdNZ United States 24->36 38 elenagilherrero.com 84.32.84.32, 49727, 49728, 49729 NTT-LT-ASLT Lithuania 24->38 40 8 other IPs or domains 24->40 62 Found direct / indirect Syscall (likely to bypass EDR) 24->62 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/99450e636243dad54861d58c1e62fae329b69b4c9af6ed1f53fba851d20b2fa7
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/99450e636243dad54861d58c1e62fae329b69b4c9af6ed1f53fba851d20b2fa7/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2024-03-22 07:22:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
19 of 23 (82.61%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tfcq4y3cipnnksdb2wgb4yx24mu3ng2mtl3o2h2t7oufduqlf6tq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
25ddae2daf0f3117cfed10da3447d26c5291a324b44534ed692a873934bac628
Formbook
27aca3b944c0bbd1b6d020de7a9ef916ba170e017ba63304adfef012822cf20f
Formbook
4c60c35f29e69092f5e26e18d43f332f00f33be5006dfb0f9e8cc7327ec6db92
Formbook
ad048fa92eef59c07432e25c1afa2af4853be0a301e3ea64910352373fdea51c
Formbook
b0b90ffc1bf2e33f057981b8d2451df026fc5179df8774f1cd647ff0a5bf89fd
Formbook
cb348e8dbd6c518a9ad671a9fb235cea3eeba8b7036fc5498f6b118d4bc3060b
Formbook
dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647
Formbook
+ 140 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/240322-h68fyshh53/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
a59378ca16dc6ffbc07d8716889f4cb3a8d769068a9e58fd288f99afb9e66552
MD5 hash:
059c1b7332fc4ff2f21a2ef20fa093f1
SHA1 hash:
a41f80e695241d25971b7f26b7cd90e3f9d983ea
Link:
https://www.unpac.me/results/220178fc-5b3c-437d-98ec-1f0e07f939ca/
SH256 hash:
1ae5ee514b7d71a3b8d5fe7182c901b0529acbc013fa4e25dcfccfeff75732f6
MD5 hash:
6c46476fb561195ddf67ae3c0861cb27
SHA1 hash:
280e9938a135fcb522e181ffb1211f73c28d871d
Link:
https://www.unpac.me/results/220178fc-5b3c-437d-98ec-1f0e07f939ca/
SH256 hash:
485384ab657e41fd085433b313c57b802c5bd691d544b68326171bbd71303df2
MD5 hash:
49dd74e644c8fc665e8a016e8478417b
SHA1 hash:
d5506f0e742d4271a851a4c50f9d0ff4f53f1c29
Link:
https://www.unpac.me/results/220178fc-5b3c-437d-98ec-1f0e07f939ca/
SH256 hash:
8a42144bfaed7278d478bb226c64cfad8abd909f2f4ce18ed17018eebbd590dd
MD5 hash:
10f2dcb1aa3ec0d37027968d347b257a
SHA1 hash:
b2d1181f17169f535a8bfa614c21aab23260155b
Link:
https://www.unpac.me/results/220178fc-5b3c-437d-98ec-1f0e07f939ca/
SH256 hash:
7cfce9d4374f24d233171eaff3aa995d700542bf0a9fd54f183745647f450c4a
MD5 hash:
aacd3a7a18721a1a5e2aac83bfedc3c9
SHA1 hash:
2743a9077e031d648c206c00bc0fa38f9e0dab38
Link:
https://www.unpac.me/results/220178fc-5b3c-437d-98ec-1f0e07f939ca/
SH256 hash:
99450e636243dad54861d58c1e62fae329b69b4c9af6ed1f53fba851d20b2fa7
MD5 hash:
ac5d56ff1732078e8a4143d632c463b2
SHA1 hash:
cb40d311ee721d2bc9631940b80a2d3bca4f2b8c
Detections:
INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Link:
https://www.unpac.me/results/220178fc-5b3c-437d-98ec-1f0e07f939ca/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/99450e636243/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.10
Link:
https://yomi.yoroi.company/submissions/99450e636243dad54861d58c1e62fae329b69b4c9af6ed1f53fba851d20b2fa7

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:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

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

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