MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3c42ac0d9356260564780ae62be7b241024aa8da3df358f48a1097e6926d86b. 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: b3c42ac0d9356260564780ae62be7b241024aa8da3df358f48a1097e6926d86b
SHA3-384 hash: f74710be408ad3006bb712c71762951e312fb4b2fc5d34d3596a77409b0c7776f3437a9be9a67234eaa4e003c6ab504b
SHA1 hash: a4bd5bca44a15a31e5c1463a717e60d70bc6251b
MD5 hash: 041a3426558fb48dadd31193184fd155
humanhash: kitten-romeo-stream-illinois
File name:ungziped_file
Download: download sample
Signature Formbook
Create hunting rule
File size:749'056 bytes
First seen:2025-10-06 09:30:18 UTC
Last seen:2025-10-06 10:40:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:U30uePS6lF/LD32a+XW+CdyfQbLockF5Huu/M+c3s7ECcF:DqeFHl+m+Cceo/LP/Fa
Threatray 1'741 similar samples on MalwareBazaar
TLSH T11EF4125923A9EA13D0A20FF04870E374A7795EC5A421E3078FFBBDEFB82674124556C6
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 :
2
# of downloads :
91
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ungziped_file
Verdict:
No threats detected
Analysis date:
2025-10-06 09:35:30 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/7fc4cd8f-c3c9-4f6a-9b72-fb992a91cb0a

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/30764/
Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68e38d9b6bc7e25d18cc4750
Tags:
virus shell msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Adding an exclusion to Microsoft Defender
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
lolbin obfuscated packed packed packer_detected tracker vbnet
Link:
https://www.filescan.io/uploads/68e38e3e5a3bccf09eb97928/reports/b565502d-a716-4de9-876d-e2b25bd53bf6/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b3c42ac0d9356260564780ae62be7b241024aa8da3df358f48a1097e6926d86b
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-30T03:47:00Z UTC
Last seen:
2025-10-08T05:36:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/b3c42ac0d9356260564780ae62be7b241024aa8da3df358f48a1097e6926d86b/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/803a9e7e-3cb4-40c6-ad6a-f53b420f3c9a
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b3c42ac0d9356260564780ae62be7b241024aa8da3df358f48a1097e6926d86b
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.42 Win 32 Exe x86
Link:
https://app.malva.re/file/041a3426558fb48dadd31193184fd155
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3c42ac0d9356260564780ae62be7b241024aa8da3df358f48a1097e6926d86b/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/b3c42ac0d9356260564780ae62be7b241024aa8da3df358f48a1097e6926d86b
Threat name:
ByteCode-MSIL.Trojan.PureLogStealer
Create hunting rule
Status:
Malicious
First seen:
2025-09-30 12:40:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wpccvqgzgvrgavshqcxgfpt3eqicjkunupptld2iueex42jg3bvq._file
Verdict:
malicious
Label(s):
unc_loader_078
Create hunting rule
formbook
Create hunting rule
unc_loader_037
Create hunting rule
Similar samples:
1b114b61f4a2313dc924eb4ff2cf26fd0c66b0a4127901d5be4531f1a201928e
Formbook
3189a2a8530b26f87a47c614fd895e197d7fd0fc0900ae8551b44114b277dec8
Formbook
3d488c7e2ce30c599303d4fc4bdc43692f80cc7e5e6feb1993197d97503f7dc3
Formbook
59ef1e380a7c0446b18002015e9060252a2cc9716affd3ddb51fabdb7d6c9a42
Formbook
5f9b01b88c7faf63239a79405c1f7c5521b9cfd1934c659a8c56345ad1549d17
Formbook
94f3a5b7cc5784d0be1f7d4c726ea45c5c84a132f7b86a10dee5d63332c5415a
Formbook
ada71baf53aaee00fdd7839175e9f688dea0365cd09a500c68187d3565c2c1b0
Formbook
c69a7800b5482d1e8e984e2e5ad548e057e1e9236e3ba937b167833e9c3302e2
Formbook
e1115ce415d73e1edbb8b00b0fef88fdaeb8ebc9d99836752e80531a5c2c833c
Formbook
ef621eb27cf38820b597be924cc1e9198b39a460150f862e4df651e6d3f09bc0
Formbook
error
Formbook
+ 1'731 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/251006-lmdc9ahm81/
Behaviour
Suspicious behavior: EnumeratesProcesses
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/dc588057-c236-4fde-9df7-8e8705bc5f6d
Unpacked files
SH256 hash:
b3c42ac0d9356260564780ae62be7b241024aa8da3df358f48a1097e6926d86b
MD5 hash:
041a3426558fb48dadd31193184fd155
SHA1 hash:
a4bd5bca44a15a31e5c1463a717e60d70bc6251b
Link:
https://www.unpac.me/results/39fbf1a1-6fd5-4f30-81cf-413ce4aef04b/
SH256 hash:
889ec14703f1c17652244d66c857df1da8848da497651ba2d3308488b292a1a5
MD5 hash:
d5cde7b39c93212e3faa702e349c5e3f
SHA1 hash:
08f98762af837078675bbf6b2c540761b9dda162
Link:
https://www.unpac.me/results/39fbf1a1-6fd5-4f30-81cf-413ce4aef04b/
SH256 hash:
4e68463959e9295134cd8a945b461600d638034eea86578c082362e87f2f9f28
MD5 hash:
77ff53e7dcb6fb00114d8e0025812ca3
SHA1 hash:
3bd2efd255107094977e28f64a351c2a714690a4
Link:
https://www.unpac.me/results/39fbf1a1-6fd5-4f30-81cf-413ce4aef04b/
SH256 hash:
cbf76943f9ce5bf2ddbe9e23e3e26981379c12d36473f589c0d5716184cf350f
MD5 hash:
281e461573c05a6e02025b7beb23ad60
SHA1 hash:
b2c1119baacc9d3ea09c57ec681bf7b8245dc896
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/39fbf1a1-6fd5-4f30-81cf-413ce4aef04b/
SH256 hash:
cd5cb124451f102c575a69653a68065b2763544f2fc8d0e8402faf1b361819f7
MD5 hash:
a4c10d69283529fb438f9c8c8ef66955
SHA1 hash:
7c5fea184d079cc5d66418637fb7393a079e290b
Link:
https://www.unpac.me/results/39fbf1a1-6fd5-4f30-81cf-413ce4aef04b/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b3c42ac0d935/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
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 b3c42ac0d9356260564780ae62be7b241024aa8da3df358f48a1097e6926d86b

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/30764/

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