MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b7a40177a47ea0cade2e8eee8a5e6dad6af195299459e296f9d44809f6248693. 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: 9


Intelligence 9 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b7a40177a47ea0cade2e8eee8a5e6dad6af195299459e296f9d44809f6248693
SHA3-384 hash: 7f3149069adcc6ac5190c8f7f8e4f33224ae4ed35702b462cbe6b4d8783389f60ebd0f8f50fd3308440b702b8498885c
SHA1 hash: ebdc790870d7c9d1fb877ea7034e89828c05246e
MD5 hash: a00ff1a6041ec75b00a4f367c153eb39
humanhash: stream-mars-north-papa
File name:Payment slip.rar
Download: download sample
Signature Formbook
Create hunting rule
File size:550'911 bytes
First seen:2025-03-10 13:24:41 UTC
Last seen:2025-03-10 14:25:55 UTC
File type: rar
MIME type:application/x-rar
ssdeep 12288:0HPZMcdB0EHimf7HaQOK53qYk/IqTun7vAzXAhw0oSJ:0HhxBjl7VBy/IqI7vAzXA3oSJ
TLSH T184C4332BE89F142327B5D576C323E7772726C2E0C3CA6CCD60656BC046A79647F1E982
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Magika rar
Reporter cocaman
Tags:FormBook payment rar


Avatar
cocaman
Malicious email (T1566.001)
From: ""Jason Mao" <Jason.mao@yizhanparts.com>" (likely spoofed)
Received: "from yizhanparts.com (unknown [45.144.212.136]) "
Date: "10 Mar 2025 12:12:24 -0700"
Subject: "RE: payment made to your account today "
Attachment: "Payment slip.rar"

Intelligence

File Origin
# of uploads :
4
# of downloads :
82
Origin country :
CH CH
File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:Payment slip.exe
File size:597'504 bytes
SHA256 hash: 22d92af6c8a273dc5a9e69e37ccfb5ffe6e7d7f0c7a46ee6b9f7e5cb34402128
MD5 hash: 7d306e85271cd072f49871b8ab0cef7b
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67ce63c61f777fe306087ad5
Tags:
micro shell msil
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/67cee84a3c5f644bd94b4661/reports/2815638d-68d4-44e4-8298-f2ad8cd9a71d/overview
Verdict:
Malicious
Labled as:
Ransom.Wacatac
Link:
https://www.hybrid-analysis.com/sample/b7a40177a47ea0cade2e8eee8a5e6dad6af195299459e296f9d44809f6248693
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.
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b7a40177a47ea0cade2e8eee8a5e6dad6af195299459e296f9d44809f6248693/
Threat name:
Win32.Trojan.CrypterX
Create hunting rule
Status:
Malicious
First seen:
2025-03-10 03:21:24 UTC
File Type:
Binary (Archive)
Extracted files:
12
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w6sac55ep2qmvxror3xiuxtnvvvpdfjjsrm6ffxz2reat5req2jq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:mg63 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250310-rsk8yax1gz/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
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/b7a40177a47ea0cade2e8eee8a5e6dad6af195299459e296f9d44809f6248693

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: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:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:win32_dotnet_form_obfuscate
Create hunting rule
Author:Reedus0
Description:Rule for detecting .NET form obfuscate malware

File information

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

Malspam

Formbook

rar b7a40177a47ea0cade2e8eee8a5e6dad6af195299459e296f9d44809f6248693

(this sample)

Formbook

Executable exe 22d92af6c8a273dc5a9e69e37ccfb5ffe6e7d7f0c7a46ee6b9f7e5cb34402128

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 22d92af6c8a273dc5a9e69e37ccfb5ffe6e7d7f0c7a46ee6b9f7e5cb34402128
  
Dropping
Formbook

Comments