MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a6a721af414a65e45747b0d66bc5b9a4bc98badb8eb2fc234bf8a6bc5841b4bd. 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: 16


Intelligence 16 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a6a721af414a65e45747b0d66bc5b9a4bc98badb8eb2fc234bf8a6bc5841b4bd
SHA3-384 hash: 3e9e6bcdab45c1b6c2de4a860d3968091ab40af3f59c6ba81469b9cc142cd7c40a5a02c33fdf92e923d187142e73c008
SHA1 hash: ec4e26c717c2c349b10ff3318a1d3a6f97e21126
MD5 hash: 327f7bd4e1b1042ff8ce39957f5cae24
humanhash: angel-sierra-oranges-river
File name:payment.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:981'504 bytes
First seen:2026-02-09 10:26:28 UTC
Last seen:2026-02-09 11:25:20 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'818 x AgentTesla, 19'742 x Formbook, 12'286 x SnakeKeylogger)
ssdeep 24576:f6V4guQqZEP/GCyczOdHg2eOceuiSWgHlyrznPfV:CVduHTJxgMceudY
Threatray 67 similar samples on MalwareBazaar
TLSH T12525125922E9DF57CAA92BB55131E33443B08F987562E352DFEABCEF751AB050004393
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
153
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/79102b5b-d7d7-4922-b8ad-7e621aea87b4/
Malware family:
n/a
ID:
1
File name:
_a6a721af414a65e45747b0d66bc5b9a4bc98badb8eb2fc234bf8a6bc5841b4bd.exe
Verdict:
No threats detected
Analysis date:
2026-02-09 10:27:53 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/45d6e040-dd49-4253-a345-731beaaee2d5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/52766/
Detection(s):
SecuriteInfo.com.Trojan.Inject6.25912.11650.31406.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6989b6864c8b031249cda4b7
Tags:
malware
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching the default Windows debugger (dwwin.exe)
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a6a721af414a65e45747b0d66bc5b9a4bc98badb8eb2fc234bf8a6bc5841b4bd
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-02-09T03:29:00Z UTC
Last seen:
2026-02-11T08:21:00Z UTC
Hits:
~1000
Detections:
Trojan-Spy.Win32.Noon.sb Trojan.MSIL.Inject.sb Trojan.MSIL.Crypt.sb VHO:Backdoor.Win32.Agent.gen Trojan-Spy.Noon.HTTP.ServerRequest Trojan-PSW.Win32.Stealer.sb HEUR:Trojan.MSIL.Crypt.gen Backdoor.Agent.HTTP.C&C
Link:
https://opentip.kaspersky.com/a6a721af414a65e45747b0d66bc5b9a4bc98badb8eb2fc234bf8a6bc5841b4bd/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/140f311f-97c8-4ee7-bd07-a7f8f5347906
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
68 / 100
Link:
https://www.joesandbox.com/analysis/1866002
Signature
.NET source code contains potential unpacker
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1866002 Sample: payment.exe Startdate: 09/02/2026 Architecture: WINDOWS Score: 68 19 Multi AV Scanner detection for submitted file 2->19 21 Yara detected AntiVM3 2->21 23 .NET source code contains potential unpacker 2->23 25 2 other signatures 2->25 7 payment.exe 3 2->7         started        process3 file4 15 C:\Users\user\AppData\...\payment.exe.log, ASCII 7->15 dropped 10 payment.exe 7->10         started        process5 process6 12 WerFault.exe 21 16 10->12         started        file7 17 C:\ProgramData\Microsoft\...\Report.wer, Unicode 12->17 dropped
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a6a721af414a65e45747b0d66bc5b9a4bc98badb8eb2fc234bf8a6bc5841b4bd
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.15 Win 32 Exe x86
Link:
https://app.malva.re/file/327f7bd4e1b1042ff8ce39957f5cae24
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a6a721af414a65e45747b0d66bc5b9a4bc98badb8eb2fc234bf8a6bc5841b4bd/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/a6a721af414a65e45747b0d66bc5b9a4bc98badb8eb2fc234bf8a6bc5841b4bd
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2026-02-09 06:28:23 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u2tsdl2bjjs6iv2hwdlgxrnzus6jrow3r2zpyi2l7ctlywcbws6q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1dc7245108586b1efebe9c379bbd181eb411213e64a993a29a0e525ef279a05b
Formbook
3b31dfbafa384d76f6de58cee45dcbddb88fbe54f21cc095c75963ef737b449a
Formbook
a6a721af414a65e45747b0d66bc5b9a4bc98badb8eb2fc234bf8a6bc5841b4bd
Formbook
c02c29e0bcd5b9f4110d716846c22e6797083be601b4c4af629b3804ce556d38
Formbook
error
Formbook
+ 57 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260209-mg69taaz5d/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Unpacked files
SH256 hash:
a6a721af414a65e45747b0d66bc5b9a4bc98badb8eb2fc234bf8a6bc5841b4bd
MD5 hash:
327f7bd4e1b1042ff8ce39957f5cae24
SHA1 hash:
ec4e26c717c2c349b10ff3318a1d3a6f97e21126
Link:
https://www.unpac.me/results/9ea6d174-48d4-4a6d-83f8-a06a895c620a/
SH256 hash:
48fa91de316a3b8b9b173548ff297a529e8045cfba133655cb8d7bf2517df628
MD5 hash:
54f2d8dcde429e9fa2c0cef39b6bb0e7
SHA1 hash:
1b0181a02d9f36613fdd5170d1b84a5a8358b2af
Link:
https://www.unpac.me/results/9ea6d174-48d4-4a6d-83f8-a06a895c620a/
SH256 hash:
fcbfdf9c1b2906556804c0750585aec00d49cad1c3c214168ab402c39cc99dfe
MD5 hash:
c0b9f794e74f11a3c6070317535e8602
SHA1 hash:
7d632abf71a5a91fd4522664c482fd2c1f832659
Link:
https://www.unpac.me/results/9ea6d174-48d4-4a6d-83f8-a06a895c620a/
SH256 hash:
59f943681deb42b28325666dda379e04c2f68cfd4ae4877f66d4428484cc1322
MD5 hash:
efc8c0fdfc85bb06249bd2ca6ed1c7cf
SHA1 hash:
9651a76870cb5394de9e74f436cda2ea1df5b1d2
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/9ea6d174-48d4-4a6d-83f8-a06a895c620a/
SH256 hash:
73671017790770e3e17d8513cfb685f7e0dc34195d331848ae7aed72f18d2791
MD5 hash:
111d9553f05f3dd705ecaf16986dd2c2
SHA1 hash:
c676c5dd1d558aa352e2752b7d0db557d64df7d8
Link:
https://www.unpac.me/results/9ea6d174-48d4-4a6d-83f8-a06a895c620a/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a6a721af414a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.87
Link:
https://yomi.yoroi.company/submissions/a6a721af414a65e45747b0d66bc5b9a4bc98badb8eb2fc234bf8a6bc5841b4bd

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

Executable exe a6a721af414a65e45747b0d66bc5b9a4bc98badb8eb2fc234bf8a6bc5841b4bd

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/52766/

Comments