MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3d9aae7952fca2b91194e5eee2003838305078a267ddf782bb1354446e23d33e. 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: 10


Intelligence 10 IOCs YARA 19 File information Comments

SHA256 hash: 3d9aae7952fca2b91194e5eee2003838305078a267ddf782bb1354446e23d33e
SHA3-384 hash: 2c6396495d9ce38ff5f64408a4371203fc2986516fe610e9022fdafa4d73cee093389873bc6291186d6f99fb1afc5f19
SHA1 hash: 5e06d615085a72bd60ab4a9fcd5a8df107c8443e
MD5 hash: d648b575255c6b79086c710ef1db88ef
humanhash: sierra-juliet-lake-blue
File name:Remittance Advice.zip
Download: download sample
Signature Formbook
File size:729'542 bytes
First seen:2025-11-20 08:13:55 UTC
Last seen:2025-11-20 08:14:11 UTC
File type: zip
MIME type:application/zip
ssdeep 12288:wp0C5sa8n6nx+atZrfIXm7ZW3kwtBVlxyjmwiWqSnS/0R6cEidgYTqu/x:wuCua86XDIXm7Z2kwpbREzytuukjx
TLSH T1E4F4235B8EDE907BC5C05388C7F4164E88BD8BF7464E58A23E9D564EB2D2B4C0F8C529
Magika zip
Reporter cocaman
Tags:FormBook zip


Avatar
cocaman
Malicious email (T1566.001)
From: ""Witold Hoffmann Seacraft" <witold.hoffmann@seacraft.eu>" (likely spoofed)
Received: "from seacraft.eu (unknown [192.227.128.185]) "
Date: "20 Nov 2025 08:06:14 +0100"
Subject: "Follow up remittance advice "
Attachment: "Remittance Advice.zip"

Intelligence


File Origin
# of uploads :
2
# of downloads :
100
Origin country :
CH CH
File Archive Information

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

File name:Remittance Advice.exe
File size:1'167'360 bytes
SHA256 hash: dbd4d458efddc920806baa4184cfa0aaf0b301b85d62c92b09f751d3f4f74b70
MD5 hash: 7a2790335597af11629ef4c43cbbfad0
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Verdict:
Malicious
Score:
99.1%
Tags:
autoit emotet
Result
Verdict:
Malicious
File Type:
PE File
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit compiled-script fingerprint keylogger microsoft_visual_cc packed
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.
Verdict:
Malicious
File Type:
zip
First seen:
2025-11-19T11:02:00Z UTC
Last seen:
2025-11-20T21:19:00Z UTC
Hits:
~1000
Verdict:
Malware
YARA:
3 match(es)
Tags:
AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Suspect Zip Archive
Threat name:
Script-AutoIt.Trojan.Swotter
Status:
Malicious
First seen:
2025-11-19 18:03:48 UTC
File Type:
Binary (Archive)
Extracted files:
29
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
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:AutoIT_Compiled
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:CP_Script_Inject_Detector
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Formbook
Author:kevoreilly
Description:Formbook Payload
Rule name:golang_bin_JCorn_CSC846
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:meth_stackstrings
Author:Willi Ballenthin
Rule name:pe_no_import_table
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Author:nex
Description:Matched shellcode byte patterns
Rule name:TH_Generic_MassHunt_Win_Malware_2025_CYFARE
Author:CYFARE
Description:Generic Windows malware mass-hunt rule - 2025
Reference:https://cyfare.net/
Rule name:win_formbook_g0
Author:Slavo Greminger, SWITCH-CERT
Rule name:YahLover
Author:Kevin Falcoz
Description:YahLover

File information


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

Malspam

Formbook

zip 3d9aae7952fca2b91194e5eee2003838305078a267ddf782bb1354446e23d33e

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
Dropping
Formbook

Comments