MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83c394457312c41c4790f2ca5102cacf26ed685952d13f162116d12ae01de791. 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 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83c394457312c41c4790f2ca5102cacf26ed685952d13f162116d12ae01de791
SHA3-384 hash: 9791cde97f440f2a5599a283a9b9970f9d4d92db4e134f8e2787cd97cb2f8bb2b9fd416b06b1e1a9801c25fd0a8c2286
SHA1 hash: 4027185991f4c795969ec57dc46e49bd827ef4cc
MD5 hash: 74b5f4c3eb3849eec7d33c3ac1a246a3
humanhash: cola-river-friend-five
File name:PAYMENT.zip
Download: download sample
Signature Formbook
Create hunting rule
File size:630'163 bytes
First seen:2025-03-03 09:27:36 UTC
Last seen:Never
File type: zip
MIME type:application/zip
ssdeep 12288:MtrG87PtXL27Rlz+LOXO2tk6iWukK11ATGwD51:MtZ7FbqqKOVdkK1C7r
TLSH T12AD423EAA347291BD49572BBC734BCD24AC97804429FA788F1E7FCD7498F990D48C219
Magika zip
Reporter cocaman
Tags:FormBook payment zip


Avatar
cocaman
Malicious email (T1566.001)
From: "info@wycmr.com" (likely spoofed)
Received: "from [195.211.191.129] (unknown [195.211.191.129]) "
Date: "2 Mar 2025 21:01:56 -0800"
Subject: "PAYMENT"
Attachment: "PAYMENT.zip"

Intelligence

File Origin
# of uploads :
1
# of downloads :
451
Origin country :
CH CH
File Archive Information

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

File name:1Ox8N7V1UKvCngC.exe
File size:701'440 bytes
SHA256 hash: b96b39428f0eeea593f2b68faa42e478b315b4e80f937662f5520e98a1ba0f0c
MD5 hash: 6b2f87f6e4747b8726f661017f3bb42e
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.24974.11014.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67c53b81c8d04e92a4be8a3e
Tags:
virus micro msil
Result
Verdict:
Unknown
File Type:
PE File
Link:
https://app.docguard.net/83c394457312c41c4790f2ca5102cacf26ed685952d13f162116d12ae01de791/results/dashboard
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/67c5763d3c5f644bd93ff902/reports/bf8f3a63-fcd1-43e9-abe2-8696be80f224/overview
Verdict:
Suspicious
Labled as:
Trojan.U.FormBook
Link:
https://www.hybrid-analysis.com/sample/83c394457312c41c4790f2ca5102cacf26ed685952d13f162116d12ae01de791
Result
Verdict:
UNKNOWN
Link:
https://labs.inquest.net/dfi/sha256/83c394457312c41c4790f2ca5102cacf26ed685952d13f162116d12ae01de791
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Score:
100%
Verdict:
Malware
File Type:
ARCHIVE
Link:
https://malprob.io/report/83c394457312c41c4790f2ca5102cacf26ed685952d13f162116d12ae01de791
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/83c394457312c41c4790f2ca5102cacf26ed685952d13f162116d12ae01de791/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Suspicious
First seen:
2025-03-03 05:17:54 UTC
File Type:
Binary (Archive)
Extracted files:
13
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qpbzirltclcbyr4q6lffcawkz4to22czklit6frbc3isvya546iq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:my18 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250303-pdt67axvhv/
Behaviour
Gathers network information
Modifies registry class
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
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/83c394457312c41c4790f2ca5102cacf26ed685952d13f162116d12ae01de791

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:Suspicious_Latam_MSI_and_ZIP_Files
Create hunting rule
Author:eremit4, P4nd3m1cb0y
Description:Detects suspicious .msi and .zip files used in Latam banking trojan campaigns.
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

zip 83c394457312c41c4790f2ca5102cacf26ed685952d13f162116d12ae01de791

(this sample)

Formbook

Executable exe b96b39428f0eeea593f2b68faa42e478b315b4e80f937662f5520e98a1ba0f0c

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 b96b39428f0eeea593f2b68faa42e478b315b4e80f937662f5520e98a1ba0f0c
  
Dropping
MD5 6b2f87f6e4747b8726f661017f3bb42e

Comments