MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f51bdce370c3dc8b9f5c2308d5e44442639da6107d98504443e691f1a6445af5. 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: 12


Intelligence 12 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f51bdce370c3dc8b9f5c2308d5e44442639da6107d98504443e691f1a6445af5
SHA3-384 hash: ff595e0aa16b90198c4b2a86fea3add2d9b738f2883edde382389c7e303ff42bead689c74e5710f30b4cf4c41f60c49a
SHA1 hash: e31da0ab8c8166362fe379be13728ad478dd7425
MD5 hash: 5d58bab320508543628a72134f5db757
humanhash: double-three-river-mexico
File name:RFQ-1579.zip
Download: download sample
Signature Formbook
Create hunting rule
File size:656'963 bytes
First seen:2025-10-06 07:07:58 UTC
Last seen:2025-10-06 07:26:31 UTC
File type: zip
MIME type:application/zip
ssdeep 12288:avXGMs27PUvBHyIRWO3orfgegM+pSVJ8Q3Nso81DotXyHp4yc5/QdUUcf:iq2oBHZRt3orIFM2SVSJDotXyyyc5IGJ
TLSH T1E1D42363142743C7AE7BFBB02C6723466E590C2B8496C56E3C3EE3AC570317FA646199
Magika zip
Reporter cocaman
Tags:FormBook QUOTATION RFQ zip


Avatar
cocaman
Malicious email (T1566.001)
From: "Sagar Raykar <sraykar@onececo.com>" (likely spoofed)
Received: "from onececo.com (unknown [172.245.12.88]) "
Date: "03 Oct 2025 18:37:39 +0200"
Subject: "RE:Urgent Request // RFQ-1579"
Attachment: "RFQ-1579.zip"

Intelligence

File Origin
# of uploads :
2
# of downloads :
69
Origin country :
CH CH
File Archive Information

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

File name:RFQ-1579.exe
File size:689'152 bytes
SHA256 hash: 3b1fe8fbb2e89bed49f8cfcb3d111e0b0f7a2db9dd9d18dac5d232b610572190
MD5 hash: f2f7da93e790c3a67919a35ddd12f32b
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68e36af691bc581176cc49e5
Tags:
virus spawn shell
Result
Verdict:
Malicious
File Type:
PE File
Link:
https://app.docguard.net/f51bdce370c3dc8b9f5c2308d5e44442639da6107d98504443e691f1a6445af5/results/dashboard
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed phishing vbnet
Link:
https://www.filescan.io/uploads/68e36af65a3bccf09eb9476b/reports/31c5d25a-2bfc-4540-b428-a5b8bd748c97/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/f51bdce370c3dc8b9f5c2308d5e44442639da6107d98504443e691f1a6445af5
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/f51bdce370c3dc8b9f5c2308d5e44442639da6107d98504443e691f1a6445af5
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
File Type:
zip
First seen:
2025-10-06T04:15:00Z UTC
Last seen:
2025-10-08T03:51:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/f51bdce370c3dc8b9f5c2308d5e44442639da6107d98504443e691f1a6445af5/results?tab=lookup
Score:
100%
Verdict:
Malware
File Type:
ARCHIVE
Link:
https://malprob.io/report/f51bdce370c3dc8b9f5c2308d5e44442639da6107d98504443e691f1a6445af5
Verdict:
inconclusive
YARA:
3 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.39 Zip Archive
Link:
https://app.malva.re/file/5d58bab320508543628a72134f5db757
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f51bdce370c3dc8b9f5c2308d5e44442639da6107d98504443e691f1a6445af5/
Threat name:
ByteCode-MSIL.Trojan.VIPKeyLogger
Create hunting rule
Status:
Malicious
First seen:
2025-10-03 14:19:35 UTC
File Type:
Binary (Archive)
Extracted files:
9
AV detection:
27 of 38 (71.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6un5zy3qypoixh24emenlzceijrz3jqqpwmfarcd42i7djsell2q._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/251006-k61r8asmx2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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/f51bdce370c3dc8b9f5c2308d5e44442639da6107d98504443e691f1a6445af5

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:NET
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: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 f51bdce370c3dc8b9f5c2308d5e44442639da6107d98504443e691f1a6445af5

(this sample)

Formbook

Executable exe 3b1fe8fbb2e89bed49f8cfcb3d111e0b0f7a2db9dd9d18dac5d232b610572190

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 3b1fe8fbb2e89bed49f8cfcb3d111e0b0f7a2db9dd9d18dac5d232b610572190
  
Dropping
MD5 f2f7da93e790c3a67919a35ddd12f32b

Comments