MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac9d39580d471e319f1d7d221e549a09185686902ce9e16e36a54d88e91be120. 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: 19


Intelligence 19 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ac9d39580d471e319f1d7d221e549a09185686902ce9e16e36a54d88e91be120
SHA3-384 hash: 36587801aee3a3219e2d70b276bc09de60e9e19013b43ccbafac56cea1642c50ebb624b06d27e1ad9e5986398122e0c0
SHA1 hash: aa4a7c01843219b82d2c1bdaf5fd8a2c08d8b307
MD5 hash: fc4009d26dd740adf98b27982e529f6a
humanhash: double-alpha-batman-ink
File name:ac9d39580d471e319f1d7d221e549a09185686902ce9e16e36a54d88e91be120
Download: download sample
Signature Formbook
Create hunting rule
File size:804'864 bytes
First seen:2025-11-06 10:26:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:WRO7xKqXkWF7VDrSlqsWETZl/IHwsl4UD0TVdUX3QVl9CKxAX:Wc1iWFgx9GluVdUX3Q
TLSH T13705BFB1F2B58459D48867714D26D83421E66EBCECA1D30EC5DA7DAB79B3FC2085280F
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 adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
63
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
SWIFT_75,000EURO.rar
Verdict:
Malicious activity
Analysis date:
2025-10-13 07:44:26 UTC
Tags:
arch-exec formbook stealer xloader
Link:
https://app.any.run/tasks/3eca7337-3e6d-418e-a0a8-ee5f6a58c363

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/35718/
Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=690c77deea0f3e915c237eb6
Tags:
micro
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Gathering data
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/ac9d39580d471e319f1d7d221e549a09185686902ce9e16e36a54d88e91be120
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-13T02:39:00Z UTC
Last seen:
2025-11-08T02:09:00Z UTC
Hits:
~1000
Detections:
HEUR:Trojan.MSIL.Taskun.gen Trojan-Dropper.Win32.Injector.sb Trojan.MSIL.Agent.sb Backdoor.Win32.Blakken.sb Trojan-Spy.Win32.Noon.sb Trojan.MSIL.Inject.sb Trojan.MSIL.Crypt.sb Trojan.Win32.SpeedBit.sb Trojan.Win32.Agent.sb PDM:Trojan.Win32.Generic Trojan.MSIL.Taskun.sb
Link:
https://opentip.kaspersky.com/ac9d39580d471e319f1d7d221e549a09185686902ce9e16e36a54d88e91be120/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6c32cdc9-f8bd-4035-b719-0d61f5a07452
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ac9d39580d471e319f1d7d221e549a09185686902ce9e16e36a54d88e91be120
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.25 Win 32 Exe x86
Link:
https://app.malva.re/file/fc4009d26dd740adf98b27982e529f6a
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ac9d39580d471e319f1d7d221e549a09185686902ce9e16e36a54d88e91be120/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/ac9d39580d471e319f1d7d221e549a09185686902ce9e16e36a54d88e91be120
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-10-13 05:52:01 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vsotswani4pddhy5purb4ve2bemfnbuqftu6c3rwuvgyr2i34eqa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
unc_loader_037
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:sg36 discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/251106-mgnsgavndj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/327ca59b-409f-4051-bfbc-45f045905942
Unpacked files
SH256 hash:
ac9d39580d471e319f1d7d221e549a09185686902ce9e16e36a54d88e91be120
MD5 hash:
fc4009d26dd740adf98b27982e529f6a
SHA1 hash:
aa4a7c01843219b82d2c1bdaf5fd8a2c08d8b307
Link:
https://www.unpac.me/results/51b2a90c-2d5a-4684-bea7-e31cf4087d2a/
SH256 hash:
b794ed0c0c7d4499d0a2ffff67eb5b92dba83f4be7964591e9edad2755176511
MD5 hash:
2a576318d07470206dd7c45f7d896078
SHA1 hash:
3096b2a5ccd98583949a9f57842d5547b50bbc29
Link:
https://www.unpac.me/results/51b2a90c-2d5a-4684-bea7-e31cf4087d2a/
SH256 hash:
1d5d1d3d110cb42e4e8a767f8b48479209d2d0c5906856e10c7450306711341a
MD5 hash:
4de581075c2abb55c696af9f11dc79da
SHA1 hash:
37e0c952ab019b2807f213c3741ebbf029ef666f
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/51b2a90c-2d5a-4684-bea7-e31cf4087d2a/
SH256 hash:
d101fa5f40942669080299bbcc1dd41814b850f82d5cff49deee3b1f5a7afd38
MD5 hash:
076b7e8a2a696123cad1a2c2071b8cd3
SHA1 hash:
a0a7a2e1bc6710d79d40ecba2f5207598588d728
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/51b2a90c-2d5a-4684-bea7-e31cf4087d2a/
Parent samples :
c9d7cbe0694124ea1484d0fa67c76f4c2ead219772ac77436da99b6627623c78
49fddee873c8d4843926a40baa7649b95621253722953f82f85a4e0ac0bfb26e
412a097d36135d1c09ef2e81f3fac61e43037670822ff0ddea3a553bb81d0f8f
ac9d39580d471e319f1d7d221e549a09185686902ce9e16e36a54d88e91be120
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.61
Link:
https://yomi.yoroi.company/submissions/ac9d39580d471e319f1d7d221e549a09185686902ce9e16e36a54d88e91be120

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

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/35718/

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