MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 af0479c951a33eabf8ffe589a8494781e8e071599a916da305bd1852b58f1a5c. 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: 20


Intelligence 20 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: af0479c951a33eabf8ffe589a8494781e8e071599a916da305bd1852b58f1a5c
SHA3-384 hash: d915c88ff3cd1d5d9514f911c2b78eb6619425cc19221881f9e18148ccfc1313e0e254a3d8343d6e5b697160d377b591
SHA1 hash: a142e763d379af7783a93fb8cef02db8a0f02cd3
MD5 hash: 615d0fd7d5f019c6fabe89487c189962
humanhash: london-four-uncle-missouri
File name:4fG5SI33p670LK2.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:575'488 bytes
First seen:2025-10-07 13:49:28 UTC
Last seen:2025-10-09 11:09:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:qXrDiKcmx3hPjYEU57RoAlzrQjHt7b4iOpIUCsHzSYgyw4WEC7:qXrDpcmHrYEs7KAlHQjN/oCsu0w4w
TLSH T110C4239A1A54DA03D8E72F741972C0B237B0BE59C520D657CEF8AEC779B9F280901747
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 James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
102
Origin country :
US US
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
4fG5SI33p670LK2.exe
Verdict:
Malicious activity
Analysis date:
2025-10-07 13:51:17 UTC
Tags:
formbook stealer
Link:
https://app.any.run/tasks/05bcf20e-aebf-48f4-a0ab-0e98d72b44d1

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/30963/
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68e51a7d7f305fa2545d42bc
Tags:
spawn shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Launching a process
Creating a file
Launching cmd.exe command interpreter
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/68e51aafd4a0085473c2cf04/reports/f0c44c6f-de56-40aa-b1e4-afff5046e14f/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/af0479c951a33eabf8ffe589a8494781e8e071599a916da305bd1852b58f1a5c
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-07T02:41:00Z UTC
Last seen:
2025-10-09T12:10:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/af0479c951a33eabf8ffe589a8494781e8e071599a916da305bd1852b58f1a5c/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/dcbfdd1b-d485-498c-b67b-fb01f093c571
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/af0479c951a33eabf8ffe589a8494781e8e071599a916da305bd1852b58f1a5c
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.48 Win 32 Exe x86
Link:
https://app.malva.re/file/615d0fd7d5f019c6fabe89487c189962
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/af0479c951a33eabf8ffe589a8494781e8e071599a916da305bd1852b58f1a5c/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/af0479c951a33eabf8ffe589a8494781e8e071599a916da305bd1852b58f1a5c
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-10-07 07:01:36 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
25 of 36 (69.44%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=v4chtskrum7kx6h74we2qskhqhuoa4kztkiw3iyfxumffnmpdjoa._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:hi23 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/251007-q5g7dadl8z/
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
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
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/57b4e8b1-b399-469a-ad3a-4d02a79e3365
Unpacked files
SH256 hash:
af0479c951a33eabf8ffe589a8494781e8e071599a916da305bd1852b58f1a5c
MD5 hash:
615d0fd7d5f019c6fabe89487c189962
SHA1 hash:
a142e763d379af7783a93fb8cef02db8a0f02cd3
Link:
https://www.unpac.me/results/b432a2e1-84bf-48ce-b8f8-a1c9632b98db/
SH256 hash:
acc1dede7c6b9261c642e17cdb8cc3af08c3afb9d92bab08a77fac0ff109b03e
MD5 hash:
bd38f42cc27214890625fb7c572bf10e
SHA1 hash:
1a08bf6af0a30e4e614acab56fed6d2daa50ac06
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/b432a2e1-84bf-48ce-b8f8-a1c9632b98db/
SH256 hash:
cc2b98223c9dcaf35c31d2eb743780aa3ea50177043e82633dda11aa7b7ff66b
MD5 hash:
014ace331af3642ddb3d3aa754e94950
SHA1 hash:
2ee54a101d1817ffdf1154d6bc19a7fa6db81c97
Link:
https://www.unpac.me/results/b432a2e1-84bf-48ce-b8f8-a1c9632b98db/
SH256 hash:
22a0b636397b7c13cc5d81fd885ea6a662615832e9a2ecf5e37afd4e50fe822a
MD5 hash:
21d1f6dc595a4eff54661e340d328203
SHA1 hash:
b7cfae5800d7b840d47dbb3977ca30772a30c93d
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/b432a2e1-84bf-48ce-b8f8-a1c9632b98db/
Parent samples :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 family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/af0479c951a3/report/overview.html
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/af0479c951a33eabf8ffe589a8494781e8e071599a916da305bd1852b58f1a5c

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

7z bcab971b92167e5452d9043c646e9243670eec9b888d0c661a29d8eee0e303e4

Formbook

Executable exe af0479c951a33eabf8ffe589a8494781e8e071599a916da305bd1852b58f1a5c

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/30963/
  
Dropped by
SHA256 bcab971b92167e5452d9043c646e9243670eec9b888d0c661a29d8eee0e303e4
  
Dropped by
MD5 5b4d59592204acd7adccb2d6fce0ca92

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