MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 23c992572207103a5fb54631a8dedf4206450604880d02bc046f353721805cc2. 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: 12


Intelligence 12 IOCs YARA 7 File information Comments
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SHA256 hash: 23c992572207103a5fb54631a8dedf4206450604880d02bc046f353721805cc2
SHA3-384 hash: aa5d0292b0bd92af7bae1183b4b47785b93466aef0d4796de853c9b21a0d42380c3585d627e5e162bc7d54a7555fc2d9
SHA1 hash: 555c0a59b20490778a2e21a4b3d6eb3ced24ad0a
MD5 hash: ba081799b83d5d27e62103d4c6e7ae19
humanhash: cardinal-lamp-lion-green
File name:ba081799b83d5d27e62103d4c6e7ae19.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:628'736 bytes
First seen:2021-02-23 17:35:30 UTC
Last seen:2021-02-23 20:00:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:qbsaEFRsWP7/jEuq9mHJHgvHb2DhMrgFTO2GKZhjVom5VQ4wWMCx:qbsnzXrJHub2DO
Threatray 1'992 similar samples on MalwareBazaar
TLSH 12D45A7C313071AEC41F8C739A549C1096217426473FF172AB13F1AC990E9B6AA5FDAE
Reporter abuse_ch
Tags:exe NanoCore RAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
107
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/118748/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.42850.29694.14358.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Using the Windows Management Instrumentation requests
Creating a file
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.
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/615827
Signature
.NET source code contains potential unpacker
Binary contains a suspicious time stamp
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 356922 Sample: M5QDAaK9yM.exe Startdate: 23/02/2021 Architecture: WINDOWS Score: 100 52 strongodss.ddns.net 2->52 56 Multi AV Scanner detection for domain / URL 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 15 other signatures 2->62 9 M5QDAaK9yM.exe 6 2->9         started        13 RegSvcs.exe 4 2->13         started        15 dhcpmon.exe 4 2->15         started        17 dhcpmon.exe 3 2->17         started        signatures3 process4 file5 46 C:\Users\user\AppData\...\XPCRVEUIFZGQ.exe, PE32 9->46 dropped 48 C:\Users\user\AppData\Local\...\tmpBDC8.tmp, XML 9->48 dropped 50 C:\Users\user\AppData\...\M5QDAaK9yM.exe.log, ASCII 9->50 dropped 68 Detected unpacking (changes PE section rights) 9->68 70 Detected unpacking (overwrites its own PE header) 9->70 72 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 9->72 74 2 other signatures 9->74 19 RegSvcs.exe 1 13 9->19         started        24 schtasks.exe 1 9->24         started        26 conhost.exe 13->26         started        28 conhost.exe 15->28         started        30 conhost.exe 17->30         started        signatures6 process7 dnsIp8 54 strongodss.ddns.net 87.237.165.78, 49719, 49721, 49722 MTVHGB Russian Federation 19->54 42 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 19->42 dropped 44 C:\Program Files (x86)\...\dhcpmon.exe, PE32 19->44 dropped 64 Protects its processes via BreakOnTermination flag 19->64 66 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->66 32 schtasks.exe 1 19->32         started        34 schtasks.exe 1 19->34         started        36 conhost.exe 24->36         started        file9 signatures10 process11 process12 38 conhost.exe 32->38         started        40 conhost.exe 34->40         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/23c992572207103a5fb54631a8dedf4206450604880d02bc046f353721805cc2/
Threat name:
ByteCode-MSIL.Trojan.Strictor
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Status:
Malicious
First seen:
2021-02-23 17:06:04 UTC
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=epezevzca4idux5viyy2rxw7iidekbqeragqfpaen42toimaltba._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
31ba519be2122d5b370fc2a9a779964f9d3c7b7db26a49cb0f7f34063612c00a
NanoCore
368f8a5b9a2f6e17088d84beba6b0b60ddcf26d0c275accbba39302368153af1
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4291277336e3c27f2cc05278635f7724fa2ff4af06a547ca5a04ac91c3d71fa0
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4ca8b2b5f0644443aa9a514e211ee81d544fc6554734ff01609c03b733823881
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53006066e227644c4004569894469b03cf75c1b88c9adc903437cad16508e1f9
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98cfc2f76ee8cefd9aa0b9be4c317800223f93ffb6e63577e8a9466693585515
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a9e29436ef50f76f0d8c46e62205491e8acbea0e22f38fcbd5d38719264897d1
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aec83b31afe9607016c7698162d85240a7a17d5399b99bb92572fa36f173e738
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f1f3d5f8746c283035bd87b68edf20257627350539b9527a2e765ffd49008906
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f3b9bd59eac6c538fb27ef8add9dfaff6bd07a2ca4afc16edb1e8e019e43bf4e
NanoCore
+ 1'982 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210223-exrl6t912a/
Behaviour
Creates scheduled task(s)
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
Maps connected drives based on registry
Checks BIOS information in registry
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
NanoCore
Malware Config
C2 Extraction:
strongodss.ddns.net:7070
87.237.165.78:7070
Unpacked files
SH256 hash:
a4766471623ae7e104f4dff42f0954541d2bb8e2dc657ae9a00107f15d59a6eb
MD5 hash:
78960e583f2d428918c9afdfa595dcd6
SHA1 hash:
0551b9d36963ba88858ed754c334856ae2ff6b79
Detections:
win_nanocore_w0
Create hunting rule
Link:
https://www.unpac.me/results/50d11930-4fb1-4a1f-b329-e10aecbdc067/
SH256 hash:
f0a09c48af16c079c37ad0914f18897976357981fe5ee6f556ab9f9f70b9a671
MD5 hash:
f984a71581f6da5732110be2a569a392
SHA1 hash:
10de05b6b35fc5dbc00c42d59a4b850bcaae01e6
Link:
https://www.unpac.me/results/50d11930-4fb1-4a1f-b329-e10aecbdc067/
SH256 hash:
49df07d27e46895d1857731fb83e9473383a0877d88f18e4ee437f19e1d4c295
MD5 hash:
1b176b70dbbfc15d7bb8039daea23a05
SHA1 hash:
b185fdebd99dda1233a73d1c6a1a11999eda0d49
Link:
https://www.unpac.me/results/50d11930-4fb1-4a1f-b329-e10aecbdc067/
SH256 hash:
23c992572207103a5fb54631a8dedf4206450604880d02bc046f353721805cc2
MD5 hash:
ba081799b83d5d27e62103d4c6e7ae19
SHA1 hash:
555c0a59b20490778a2e21a4b3d6eb3ced24ad0a
Link:
https://www.unpac.me/results/50d11930-4fb1-4a1f-b329-e10aecbdc067/
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/23c992572207103a5fb54631a8dedf4206450604880d02bc046f353721805cc2

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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
Description:Detects Nanocore RAT
Reference:Internal Research - T2T
Rule name:Nanocore_RAT_Gen_2
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: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.

Cape
Cape
https://www.capesandbox.com/analysis/118748/

Comments