MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bca3aecab66ae4ce7a1af2b52bae53881f9de6213e638661daf9b79fcfb55c0b. 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: 13


Intelligence 13 IOCs YARA 22 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bca3aecab66ae4ce7a1af2b52bae53881f9de6213e638661daf9b79fcfb55c0b
SHA3-384 hash: 173249d06cdba31cb85a89e9d8d4146a60032c023e022c4ec1e5215dde27a4ee08927083c43f65af6a23e36517c45d9d
SHA1 hash: 7b6fec1492ad878638f274e31ec2098df6a3df59
MD5 hash: 71b8c1938a42c83513ad9aa81eed13b1
humanhash: mississippi-lima-zulu-chicken
File name:inv 912402020.zip
Download: download sample
Signature Formbook
Create hunting rule
File size:686'250 bytes
First seen:2025-12-08 17:19:55 UTC
Last seen:2025-12-08 17:22:52 UTC
File type: zip
MIME type:application/zip
ssdeep 12288:6IkmDe8uJkh1LysfR8S9mJaUZqMgOgATaF3eL5TkEfV+lp7Xo8MBBjv0VBot1Oo:fytgLxfR79mQUZhgOgATm6kRzLnM7jvx
TLSH T177E4330787075E71914922DF965CE33E7F358882C06D3A0BEEBAD3D9F899D2416660F2
Magika zip
Reporter cocaman
Tags:FormBook zip


Avatar
cocaman
Malicious email (T1566.001)
From: "=?UTF-8?B?SHXhu7NuaCBOaMOjIEzDvQ==?= <lyhn@minhphu.com>" (likely spoofed)
Received: "from minhphu.com (unknown [172.245.12.77]) "
Date: "23 Nov 2025 19:15:36 -0800"
Subject: "RE: ORIGINAL DOCS OF INV 912402020_PO.83229"
Attachment: "inv 912402020.zip"

Intelligence

File Origin
# of uploads :
2
# of downloads :
121
Origin country :
CH CH
File Archive Information

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

File name:inv 912402020.exe
File size:712'192 bytes
SHA256 hash: 7e4040e5e7d0bd7931bcd2c9108221911ca0570b50f5033cef7143fc27dd8fa3
MD5 hash: f3a152e9b77765c87d3169c94c2bb50b
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/34e11520-ed15-4adb-b389-9feaec89da45/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6936f204881313558a2b980c
Tags:
autorun virus
Result
Verdict:
Malicious
File Type:
PE File
Link:
https://app.docguard.net/bca3aecab66ae4ce7a1af2b52bae53881f9de6213e638661daf9b79fcfb55c0b/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
autoit compiled-script microsoft_visual_cc overlay packed packed packed upx
Link:
https://www.filescan.io/uploads/693708d36019bc7a8f823391/reports/c6717298-27af-4dc3-b514-f47e790a8e79/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/bca3aecab66ae4ce7a1af2b52bae53881f9de6213e638661daf9b79fcfb55c0b
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/bca3aecab66ae4ce7a1af2b52bae53881f9de6213e638661daf9b79fcfb55c0b
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:
2025-11-24T00:28:00Z UTC
Last seen:
2025-11-24T03:26:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/bca3aecab66ae4ce7a1af2b52bae53881f9de6213e638661daf9b79fcfb55c0b/results?tab=lookup
Score:
100%
Verdict:
Malware
File Type:
ARCHIVE
Link:
https://malprob.io/report/bca3aecab66ae4ce7a1af2b52bae53881f9de6213e638661daf9b79fcfb55c0b
Verdict:
Malware
YARA:
3 match(es)
Tags:
AutoIt Decompiled Executable PE (Portable Executable) PE File Layout Suspect Zip Archive
Link:
https://app.malva.re/file/71b8c1938a42c83513ad9aa81eed13b1
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bca3aecab66ae4ce7a1af2b52bae53881f9de6213e638661daf9b79fcfb55c0b/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-11-24 04:09:33 UTC
File Type:
Binary (Archive)
Extracted files:
53
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xsr25svwnlsm46q26k2sxlstrapz3zrbhzrymyo27g3z7t5vlqfq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan upx
Link:
https://tria.ge/reports/251208-v3a3hafm81/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
AutoIT Executable
Suspicious use of SetThreadContext
UPX packed file
Executes dropped EXE
Drops startup file
Formbook payload
Formbook
Formbook family
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.20
Link:
https://yomi.yoroi.company/submissions/bca3aecab66ae4ce7a1af2b52bae53881f9de6213e638661daf9b79fcfb55c0b

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_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/
Rule name:UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser
Create hunting rule
Author:malware-lu
Rule name:upx_largefile
Create hunting rule
Author:k3nr9
Rule name:win_upx_packed
Create hunting rule
Author:Reedus0
Description:Rule for detecting UPX packed malware

File information

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

Malspam

Formbook

zip bca3aecab66ae4ce7a1af2b52bae53881f9de6213e638661daf9b79fcfb55c0b

(this sample)

Formbook

Executable exe 9b6a347c4a3da1ba88d2b5a4d1cb0c8182da7aa5dc36526496d7cd9ec98607b4

Formbook

Executable exe 7e4040e5e7d0bd7931bcd2c9108221911ca0570b50f5033cef7143fc27dd8fa3

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 7e4040e5e7d0bd7931bcd2c9108221911ca0570b50f5033cef7143fc27dd8fa3
  
Dropping
Formbook
  
Dropping
MD5 f3a152e9b77765c87d3169c94c2bb50b

Comments