MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3c97c9c3fd33f0deafc90dac2192ca8a44a44732368e02fdafbf35da539091aa. 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: 17


Intelligence 17 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3c97c9c3fd33f0deafc90dac2192ca8a44a44732368e02fdafbf35da539091aa
SHA3-384 hash: 82f4431e7381326c41d1c35ac5597ee326c78cf2fab379875df5c6999e3580f8eb18654e19056208512fc29cffaf8995
SHA1 hash: 3a76adca3539964ce581e3f969cb17e446a8a09b
MD5 hash: 1f8715d769b879769fa4c65a2c9a9467
humanhash: failed-don-spring-april
File name:Wonjin_P_Shipping_Documents_Feb2026.pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'107'968 bytes
First seen:2026-02-12 13:56:32 UTC
Last seen:Never
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:XCZal6DRKKSeuqFp8ilnpdgny6acGW07lVSKQ:JodKKV7lyZmlVB
Threatray 12 similar samples on MalwareBazaar
TLSH T19135120DB76ABE20CB684B77C413120C51F68597E633F3AA5AD61CE50D79B49C80EAC7
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 :
1
# of downloads :
143
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
DeepSea
Details
DeepSea
DeepSea decrypted strings
Link:
https://research.acce.ciphertechsolutions.com/results/d7a2bdc3-3a07-4950-a591-3b95e5675744/
Malware family:
n/a
ID:
1
File name:
847afcd130d4961ee6c790060aa63446f135ca1fb5ac7605a45c9c4e1417a946.zip
Verdict:
Malicious activity
Analysis date:
2026-02-11 08:01:52 UTC
Tags:
arch-exec
Link:
https://app.any.run/tasks/8b7bfee3-d292-47de-8c68-19496ae2941f

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/53137/
Detection(s):
Win.Packed.Genie-10059343-0
Create hunting rule

Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=698c376f38c84aca0d32d1de
Tags:
n/a
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated obfuscated packed
Link:
https://www.filescan.io/uploads/698ddc3a930564ff3c9cdce4/reports/17834771-d9a6-436a-8b8c-691f32f522a3/overview
Verdict:
Malicious
Labled as:
Genie.8DN.Generic
Link:
https://www.hybrid-analysis.com/sample/3c97c9c3fd33f0deafc90dac2192ca8a44a44732368e02fdafbf35da539091aa
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-02-11T01:36:00Z UTC
Last seen:
2026-02-13T03:55:00Z UTC
Hits:
~100
Detections:
Trojan.MSIL.Inject.sb Trojan.MSIL.Crypt.sb VHO:Trojan-PSW.Win32.ReaderDB.gen PDM:Trojan.Win32.Generic PDM:Trojan.Win32.Badex.d HEUR:Trojan.MSIL.Crypt.gen Trojan-Spy.Win32.Noon.sb
Link:
https://opentip.kaspersky.com/3c97c9c3fd33f0deafc90dac2192ca8a44a44732368e02fdafbf35da539091aa/results?tab=lookup
Malware family:
KeyBase
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0db1e5b0-b666-4c26-bb60-b4820dfc35b7
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1868431
Signature
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Double Extension File Execution
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3c97c9c3fd33f0deafc90dac2192ca8a44a44732368e02fdafbf35da539091aa
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.33 Win 32 Exe x86
Link:
https://app.malva.re/file/1f8715d769b879769fa4c65a2c9a9467
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3c97c9c3fd33f0deafc90dac2192ca8a44a44732368e02fdafbf35da539091aa/
Threat name:
Win32.Trojan.Jalapeno
Create hunting rule
Status:
Malicious
First seen:
2026-02-11 05:13:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hsl4tq75gpyn5l6jbwwcdewkrjckirzsg2haf7npx425uu4qsgva._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
105805695ed39400d28a06af3c31603941ed28c917b1e2601c0b6ee09cbf3037
Formbook
3c97c9c3fd33f0deafc90dac2192ca8a44a44732368e02fdafbf35da539091aa
Formbook
a57580c54c2f959acf8f5207dc07a74f03be4d8598e843b0a5b05f93cc95c9df
Formbook
beb637ceb20275efa5ae8dc5b8be06287d7f45df6ab7454c378ff841a0f29f29
Formbook
e5f1feba5c6cd56201fd5eb64c4d9dbfae827f756ebbfeda3cb51f453d465d1b
Formbook
error
Formbook
+ 2 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/260212-q9csfsds7e/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Unpacked files
SH256 hash:
3c97c9c3fd33f0deafc90dac2192ca8a44a44732368e02fdafbf35da539091aa
MD5 hash:
1f8715d769b879769fa4c65a2c9a9467
SHA1 hash:
3a76adca3539964ce581e3f969cb17e446a8a09b
Link:
https://www.unpac.me/results/7673ad04-127f-446b-8b2a-5bbf73bcd1b8/
SH256 hash:
48fa91de316a3b8b9b173548ff297a529e8045cfba133655cb8d7bf2517df628
MD5 hash:
54f2d8dcde429e9fa2c0cef39b6bb0e7
SHA1 hash:
1b0181a02d9f36613fdd5170d1b84a5a8358b2af
Link:
https://www.unpac.me/results/7673ad04-127f-446b-8b2a-5bbf73bcd1b8/
SH256 hash:
a7f5d6a88f71d2ce2c20fcfdd015a48a6b92b4d669dc56bd7107297e3bf76f2a
MD5 hash:
b77905280df2068a7574070c767214eb
SHA1 hash:
a0c65e78ea1ca8e60c9d11805affd5a778696ce5
Link:
https://www.unpac.me/results/7673ad04-127f-446b-8b2a-5bbf73bcd1b8/
SH256 hash:
9e6fc86fe2b881d158ad3e4e911474be045ac35a5ee4e729d06b4b1b51439f46
MD5 hash:
17e481ba06063fdb285cffdeb4f4e30b
SHA1 hash:
c1ba6c11e982910a3a816b259a9714973a103ce5
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/7673ad04-127f-446b-8b2a-5bbf73bcd1b8/
SH256 hash:
bf5eec264969ee9947786b89410fedcdfa4edd09e0ac3ab59b1f44d26f69a5f9
MD5 hash:
0edd5e766d52fccca712eed59a0db942
SHA1 hash:
73a3734dfcf76abd183f77af10b6e9b6d609fd5a
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/7673ad04-127f-446b-8b2a-5bbf73bcd1b8/
Parent samples :
55f142f550fa6dcfd1468195bc9b9fdca87714a06e5a8370152119fb10405b32
a57580c54c2f959acf8f5207dc07a74f03be4d8598e843b0a5b05f93cc95c9df
3c97c9c3fd33f0deafc90dac2192ca8a44a44732368e02fdafbf35da539091aa
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3c97c9c3fd33/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/3c97c9c3fd33f0deafc90dac2192ca8a44a44732368e02fdafbf35da539091aa

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.

Malspam

Formbook

Executable exe 3c97c9c3fd33f0deafc90dac2192ca8a44a44732368e02fdafbf35da539091aa

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/53137/

Comments