MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a340c5e0111836bd3c99096916b97d5cf4de57e58e582a92edec38c1c99e1d9. 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


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Vendor detections: 9


Intelligence 9 IOCs YARA 2 File information Comments
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SHA256 hash: 4a340c5e0111836bd3c99096916b97d5cf4de57e58e582a92edec38c1c99e1d9
SHA3-384 hash: ba0e452e3a82a006ef6c5cd32fad622f588fd16550185ffe1a26bd27147fc2a9d113134db7ec5da386c3ad8a7181b816
SHA1 hash: 057cede25ab970137a9c3e36362fbdddf80d8482
MD5 hash: af5c28c607539d27c372aad0486b9a53
humanhash: steak-one-mobile-alanine
File name:af5c28c607539d27c372aad0486b9a53.exe
Download: download sample
Signature Stop
Create hunting rule
File size:926'720 bytes
First seen:2021-06-06 06:56:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:uNaA2iNg5hWW9GsjwBqeqkfYbaXKqe4nsGfRLbOmksh40wpEYMErr:W1XJsGJLSmkaWEX
Threatray 39 similar samples on MalwareBazaar
TLSH 67156BF8B188ADF2D25DCBB3C604988D93E114FF9223C55D5AB8F9C51613BCADB89442
Reporter abuse_ch
Tags:exe Ransomware Stop

Intelligence

File Origin
# of uploads :
1
# of downloads :
554
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
af5c28c607539d27c372aad0486b9a53.exe
Verdict:
Suspicious activity
Analysis date:
2021-06-06 06:57:59 UTC
Tags:
loader
Link:
https://app.any.run/tasks/3f936ccb-43cc-4f96-aaa8-b2a2cece8b9b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/164707/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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:
4444Ransomware Maoloa
Create hunting rule
Detection:
malicious
Classification:
rans.spre.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/797651
Signature
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
Creates files in the recycle bin to hide itself
Deletes shadow drive data (may be related to ransomware)
Injects a PE file into a foreign processes
Machine Learning detection for sample
May disable shadow drive data (uses vssadmin)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Shadow Copies Deletion Using Operating Systems Utilities
Spreads via windows shares (copies files to share folders)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected 4444Ransomware
Yara detected AntiVM3
Yara detected Maoloa
Yara detected RansomwareGeneric
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 430047 Sample: MkN1YeVTbG.exe Startdate: 06/06/2021 Architecture: WINDOWS Score: 100 56 Multi AV Scanner detection for domain / URL 2->56 58 Antivirus detection for URL or domain 2->58 60 Multi AV Scanner detection for submitted file 2->60 62 9 other signatures 2->62 8 MkN1YeVTbG.exe 15 5 2->8         started        13 MkN1YeVTbG.exe 2->13         started        15 MkN1YeVTbG.exe 2->15         started        process3 dnsIp4 52 176.111.174.74, 49717, 49725, 49726 WILWAWPL Russian Federation 8->52 48 C:\Users\user\AppData\...\MkN1YeVTbG.exe.log, ASCII 8->48 dropped 74 Adds a directory exclusion to Windows Defender 8->74 76 Injects a PE file into a foreign processes 8->76 17 Kill$.exe 8 8->17         started        21 MkN1YeVTbG.exe 3 501 8->21         started        23 powershell.exe 26 8->23         started        54 192.168.2.1 unknown unknown 15->54 50 C:\Users\user\AppData\Local\Temp\Kill$.exe, PE32+ 15->50 dropped file5 signatures6 process7 file8 44 C:\Users\user\AppData\Local\Temp\...\34D4.bat, ASCII 17->44 dropped 64 Multi AV Scanner detection for dropped file 17->64 25 cmd.exe 17->25         started        28 conhost.exe 17->28         started        46 C:\$Recycle.Bin\.B580E5043E45A7E4D097, data 21->46 dropped 66 Creates files in the recycle bin to hide itself 21->66 68 Spreads via windows shares (copies files to share folders) 21->68 30 cmd.exe 21->30         started        32 conhost.exe 23->32         started        signatures9 process10 signatures11 70 May disable shadow drive data (uses vssadmin) 25->70 72 Deletes shadow drive data (may be related to ransomware) 25->72 34 vssadmin.exe 25->34         started        36 reg.exe 25->36         started        38 takeown.exe 25->38         started        42 6 other processes 25->42 40 conhost.exe 30->40         started        process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a340c5e0111836bd3c99096916b97d5cf4de57e58e582a92edec38c1c99e1d9/
Threat name:
Win32.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-06-06 01:27:56 UTC
AV detection:
9 of 29 (31.03%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ji2ayxqbcgbwxu6jscljc24x2xhu3zl6ldsyfkjo33byyhez4hmq._file
Verdict:
malicious
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00a7740f9a5e8b3d55865bad1c390d2990322c5927f566ee9dec620b7fcd8f47
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052a57afa8493f1396d73ab451c6df0135cf674529a26f692110b6ddb91c2672
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069b31cb7f9054647b684da4fc5263fa690e32d75729ec6b5c808b0c532b9628
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228cb0b4f58f72e44a6325c45da54adf0892deedcece6b010659f354f863c260
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4e9c1dcd61419f3a79a56624a40225cafee7778a8dc8a7e7c65abc003199a852
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92c886fc39b43b7615f88fe7231e1c1f85af2ff8daa44374e351265cbc81041a
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acd3819ea42caf7fabc03c7e56b03e673f6a3b16ac3a131b57f7e4549de7b16d
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af6633837862364f72076eefae7b24aae8f83d713af239b140f6ad11d149074d
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e43f0cf8905305adbb28597ad256c8e0547fe3ce3c648095635c1ae94ab0dbb9
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+ 29 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
discovery evasion persistence ransomware trojan
Link:
https://tria.ge/reports/210606-h47drms3fs/
Behaviour
Discovers systems in the same network
Interacts with shadow copies
Kills process with taskkill
Runs net.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Launches sc.exe
Suspicious use of SetThreadContext
Adds Run key to start application
Drops desktop.ini file(s)
Enumerates connected drives
Loads dropped DLL
Modifies file permissions
Downloads MZ/PE file
Executes dropped EXE
Modifies extensions of user files
Modifies service settings
Stops running service(s)
Deletes shadow copies
Modifies Windows Defender Real-time Protection settings
Unpacked files
SH256 hash:
1e7c66f6da06a0ea81371fb98d0e76424a600518b808140279c7ba8e06541ac5
MD5 hash:
8fe0389e4b903545421e42b628186cd2
SHA1 hash:
f6adc3d1a4ac995fad2a49474243d896b0236c2b
Link:
https://www.unpac.me/results/405b0244-000b-4049-86e1-68194dcaa6f7/
SH256 hash:
4a340c5e0111836bd3c99096916b97d5cf4de57e58e582a92edec38c1c99e1d9
MD5 hash:
af5c28c607539d27c372aad0486b9a53
SHA1 hash:
057cede25ab970137a9c3e36362fbdddf80d8482
Link:
https://www.unpac.me/results/405b0244-000b-4049-86e1-68194dcaa6f7/
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/4a340c5e0111836bd3c99096916b97d5cf4de57e58e582a92edec38c1c99e1d9

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:pe_imphash
Create hunting rule
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.

Web download

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Executable exe 4a340c5e0111836bd3c99096916b97d5cf4de57e58e582a92edec38c1c99e1d9

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1280330/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/164707/

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