MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8a3da8c60459974767732321a29b91dfea59ab5ad993caf832f2bb2484b5c96. 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


Sodinokibi


Vendor detections: 10


Intelligence 10 IOCs YARA 6 File information Comments
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SHA256 hash: b8a3da8c60459974767732321a29b91dfea59ab5ad993caf832f2bb2484b5c96
SHA3-384 hash: 1d3e159b3978a28d4a1da8b613a8b099cee9b30174bc4626764aa13b506715a4a923b23db7ef35386f81cb165bcfadb7
SHA1 hash: daa2b8467edff06bf3f8cc926534bc088049a092
MD5 hash: 40c01e02dd940c2b3ca1466799da68fd
humanhash: maryland-music-stairway-yankee
File name:b8a3da8c60459974767732321a29b91dfea59ab5ad993caf832f2bb2484b5c96
Download: download sample
Signature Sodinokibi
Create hunting rule
File size:110'083 bytes
First seen:2022-02-11 10:26:19 UTC
Last seen:2022-02-11 11:39:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'672 x AgentTesla, 19'494 x Formbook, 12'214 x SnakeKeylogger)
ssdeep 768:qPfbWBQCOySInqns2xQFV6Anqns2xQFVwCOySxVYVR6K:qPfbW2ySInPFVjnPFVYySxyVRl
Threatray 4'944 similar samples on MalwareBazaar
TLSH T148B3323E29BD2A3BD2BADB764ED09053F0889EA73151BD55B4D703664340A25B9C233F
Reporter struppigel
Tags:.NET exe fakerevil MSIL Ransomware Sodinokibi


Avatar
struppigel
Fake REvil ransomware, written in .NET

Intelligence

File Origin
# of uploads :
2
# of downloads :
1'026
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/240893/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.38925674.9088.26234.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %AppData% subdirectories
Creating a file
Creating a window
DNS request
Creating a file in the %temp% directory
Changing a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Creating a process with a hidden window
Sending a custom TCP request
Running batch commands
Setting a single autorun event
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd.exe control.exe filecoder fingerprint netsh.exe obfuscated overlay packed packed ransomware replace.exe sodinokibi stealer
Link:
https://www.filescan.io/uploads/620639f9289e2f3e4fc22fba/reports/6c625c88-a22f-4322-b6ea-f36c7fe21048/overview
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:
Generic Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/daace23b-c593-4445-98e4-97d621715781
Result
Threat name:
Nemty
Create hunting rule
Detection:
malicious
Classification:
rans.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/938263
Signature
.NET source code contains very large strings
Deletes shadow drive data (may be related to ransomware)
Found ransom note / readme
Found Tor onion address
Machine Learning detection for sample
Modifies the windows firewall
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Shadow Copies Deletion Using Operating Systems Utilities
Sigma detected: WannaCry Ransomware
Uses bcdedit to modify the Windows boot settings
Yara detected Nemty Ransomware
Yara detected RansomwareGeneric
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 570737 Sample: 6zYrm177rE Startdate: 11/02/2022 Architecture: WINDOWS Score: 100 26 Multi AV Scanner detection for domain / URL 2->26 28 Sigma detected: WannaCry Ransomware 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 9 other signatures 2->32 7 6zYrm177rE.exe 7 85 2->7         started        process3 file4 24 C:\Users\...\4agrfsh5tx7-HOW-TO-DECRYPT.txt, ASCII 7->24 dropped 34 Uses bcdedit to modify the Windows boot settings 7->34 36 Modifies the windows firewall 7->36 11 cmd.exe 1 7->11         started        14 cmd.exe 1 7->14         started        16 conhost.exe 7->16         started        signatures5 process6 signatures7 38 Deletes shadow drive data (may be related to ransomware) 11->38 18 conhost.exe 11->18         started        20 vssadmin.exe 1 11->20         started        22 conhost.exe 14->22         started        process8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b8a3da8c60459974767732321a29b91dfea59ab5ad993caf832f2bb2484b5c96/
Threat name:
ByteCode-MSIL.Ransomware.Encoder
Create hunting rule
Status:
Malicious
First seen:
2022-02-08 21:41:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
31 of 43 (72.09%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xcr5vddaiwmxi5txgizbuknzdx7klgvvvwmtzl4df4v3escllsla._file
Verdict:
malicious
Label(s):
ryuk
Create hunting rule
Similar samples:
4c65b9e49af0ac895cb7cbe2099df2897989de14251326355890db7238a1d340
Sodinokibi
620428519e13cbb1c4b3d71c1bce411bf3054e0501358f6b27cc92268d2f420b
Sodinokibi
7331846b7486706bb089a60a9885b54b37c432bf8bfc0de738573f0d2ceb487b
Sodinokibi
80d785f64f10760466e0023c19846dbae749aac11be0433e17f7c703b220b433
Sodinokibi
9424157324166005c9d1e7304701d70ca83384259cafcf006a0b4ac1d2055acc
Sodinokibi
afde4b3d64da9dea8c95d5bfa349920a7d74017ac4bdefd41d1cd45002e00ad8
Sodinokibi
d1b19d456e97bede86d5bbe8c09b027b00c330e568c0474abb3e60ad154bc62d
Sodinokibi
fea29fb2293dfa888c3ce64dba2e775b2793b7f2edd4bd647dd5d2a96d1bdc04
Sodinokibi
+ 4'934 additional samples on MalwareBazaar
Result
Malware family:
sodinokibi
Create hunting rule
Score:
  10/10
Tags:
family:sodinokibi persistence ransomware
Link:
https://tria.ge/reports/220211-mg376aebdj/
Behaviour
Checks processor information in registry
Interacts with shadow copies
Modifies Control Panel
Modifies data under HKEY_USERS
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Sets desktop wallpaper using registry
Adds Run key to start application
Drops desktop.ini file(s)
Checks computer location settings
Deletes shadow copies
Sodin,Sodinokibi,REvil
Unpacked files
SH256 hash:
b8a3da8c60459974767732321a29b91dfea59ab5ad993caf832f2bb2484b5c96
MD5 hash:
40c01e02dd940c2b3ca1466799da68fd
SHA1 hash:
daa2b8467edff06bf3f8cc926534bc088049a092
Link:
https://www.unpac.me/results/7c7e496a-fc7c-46db-a06e-ed39d7b101e8/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b8a3da8c6045/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:exec_macros
Create hunting rule
Author:ddvvmmzz
Description:exec macros
Rule name:INDICATOR_SUSPICIOUS_GENRansomware
Create hunting rule
Author:ditekSHen
Description:detects command variations typically used by ransomware
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_RANSOMWARE_Indicator_Jul20
Create hunting rule
Author:Florian Roth
Description:Detects ransomware indicator
Reference:https://securelist.com/lazarus-on-the-hunt-for-big-game/97757/
Rule name:SUSP_RANSOMWARE_Indicator_Jul20_RID31A2
Create hunting rule
Author:Florian Roth
Description:Detects ransomware indicator
Reference:https://securelist.com/lazarus-on-the-hunt-for-big-game/97757/

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/240893/

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