MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c38bf4313b8f4cd5a20790b4e52f431e125551d049dfdddf1a36bb67733041ab. 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: 21


Intelligence 21 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c38bf4313b8f4cd5a20790b4e52f431e125551d049dfdddf1a36bb67733041ab
SHA3-384 hash: 40d578e8f4fbe03329e987f2d5e3b756fdc48a6211889f63a8582b3d749a0ba42f14451272c81c0f305716c6bd007f84
SHA1 hash: 0e51a9ddedcca8c872daff7495326a78991ee034
MD5 hash: e42930f0ac7c5e2a07a6e31880ca5d55
humanhash: nuts-black-gee-happy
File name:PaymentAdviceMT1003.scr
Download: download sample
Signature Formbook
Create hunting rule
File size:695'808 bytes
First seen:2026-01-01 09:57:02 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 12288:myRrhNLQT8qPZUmJK4ho3CFsCQI0s1vTE/FqxSgJI3PW27878ez8Bc6:jNtI3PmgZi279ZxSb3O4c8Cx6
Threatray 2'400 similar samples on MalwareBazaar
TLSH T17CE40245274EDA06D0A25FF36872E1B81B79AECABC71D2438FD63EDFB479A404865301
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 :
124
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/8b869256-9132-4a90-8aa1-08bcf1ec0501/
Malware family:
formbook
Create hunting rule
ID:
1
File name:
PaymentAdviceMT1003.scr
Verdict:
Malicious activity
Analysis date:
2026-01-01 09:58:57 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/9a05f4bd-b126-45de-8b6d-ffa15d430253

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/46767/
Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=695644f5d2357cccc3de5add
Tags:
malware
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm fingerprint krypt lolbin masquerade nanocore packed reconnaissance runonce
Link:
https://www.filescan.io/uploads/695644f98d1aa9829e286b58/reports/c0b6781d-2c9e-4930-87f0-1183d9e2347d/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c38bf4313b8f4cd5a20790b4e52f431e125551d049dfdddf1a36bb67733041ab
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-01-01T06:30:00Z UTC
Last seen:
2026-01-03T08:23:00Z UTC
Hits:
~10000
Detections:
PDM:Trojan.Win32.Generic HEUR:Trojan-Spy.MSIL.Noon.gen HEUR:Trojan.MSIL.Agent.gen Trojan.MSIL.Taskun.sb Trojan.MSIL.Crypt.sb Trojan-Spy.Noon.HTTP.ServerRequest Trojan-PSW.Win32.Stealer.sb Backdoor.Agent.HTTP.C&C Trojan-Spy.Win32.Noon.sb Trojan.MSIL.Inject.sb VHO:Backdoor.Win32.Convagent.gen
Link:
https://opentip.kaspersky.com/c38bf4313b8f4cd5a20790b4e52f431e125551d049dfdddf1a36bb67733041ab/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e8b39afe-f4b1-46bc-b329-e8da41d169f3
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1843070
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1843070 Sample: PaymentAdviceMT1003.scr.exe Startdate: 01/01/2026 Architecture: WINDOWS Score: 100 34 kickersketch.com 2->34 36 designbynord.com 2->36 38 13 other IPs or domains 2->38 46 Suricata IDS alerts for network traffic 2->46 48 Antivirus detection for URL or domain 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 6 other signatures 2->52 11 PaymentAdviceMT1003.scr.exe 3 2->11         started        signatures3 process4 file5 32 C:\Users\...\PaymentAdviceMT1003.scr.exe.log, ASCII 11->32 dropped 62 Unusual module load detection (module proxying) 11->62 15 PaymentAdviceMT1003.scr.exe 11->15         started        signatures6 process7 signatures8 64 Maps a DLL or memory area into another process 15->64 18 yi91HDTN.exe 15->18 injected process9 process10 20 msra.exe 13 18->20         started        signatures11 54 Tries to steal Mail credentials (via file / registry access) 20->54 56 Tries to harvest and steal browser information (history, passwords, etc) 20->56 58 Modifies the context of a thread in another process (thread injection) 20->58 60 4 other signatures 20->60 23 z8H1Y7fO.exe 20->23 injected 26 chrome.exe 20->26         started        28 firefox.exe 20->28         started        process12 dnsIp13 40 designbynord.com 81.169.145.92, 49709, 49710, 49711 STRATOSTRATOAGDE Germany 23->40 42 cdqvc.com 178.63.45.142, 49695, 80 HETZNER-ASDE Germany 23->42 44 9 other IPs or domains 23->44 30 WerFault.exe 4 26->30         started        process14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c38bf4313b8f4cd5a20790b4e52f431e125551d049dfdddf1a36bb67733041ab
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.40 Win 32 Exe x86
Link:
https://app.malva.re/file/e42930f0ac7c5e2a07a6e31880ca5d55
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c38bf4313b8f4cd5a20790b4e52f431e125551d049dfdddf1a36bb67733041ab/
Verdict:
Malicious
Threat:
VHO:Trojan-Spy.MSIL.Noon
Link:
https://tip.neiki.dev/file/c38bf4313b8f4cd5a20790b4e52f431e125551d049dfdddf1a36bb67733041ab
Threat name:
ByteCode-MSIL.Trojan.PureLogStealer
Create hunting rule
Status:
Malicious
First seen:
2026-01-01 09:29:29 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
23 of 38 (60.53%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yof7imj3r5gnliqhsc2okl2ddyjfkuoqjhp53xy2g25wo4zqigvq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0d2d887adcdf6309c4532e75ddb508db33402c7a488c3e2b8943c6721dab6708
Formbook
278904b1e6a6d848e3b14319363d95f01e498acf139bc9f8d5c346ed3d0ec9fb
Formbook
5aa4328001eb57a54a716ba3c7f0fa7f6b8c390828ea8b33a3c85dfb2838a512
Formbook
89c232f0c040e54ae9568871262eadec3164ef6ccd10529792c7b949f98b25f4
Formbook
ac1bdadf98761eed39833d096c732ca61ede04535ecced46d1f662f9dab206f6
Formbook
cdecb17866aa95ae171740ba4fc9b73b0f7a75ee817119fbe423b074c2c3e8a6
Formbook
error
Formbook
f98c2c567f36a0d6f93d0727d1635ae56ff00987ed1090c9783104bc99b77654
Formbook
fec34000664e9453638769da3413cddb271e791cbc5f8fb9c7697aeec8133f33
Formbook
+ 2'390 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/260106-k5827sypct/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/adf0e735-fe8b-4fc2-a3ac-aa289921a72d
Unpacked files
SH256 hash:
c38bf4313b8f4cd5a20790b4e52f431e125551d049dfdddf1a36bb67733041ab
MD5 hash:
e42930f0ac7c5e2a07a6e31880ca5d55
SHA1 hash:
0e51a9ddedcca8c872daff7495326a78991ee034
Link:
https://www.unpac.me/results/a2f1461e-859e-42cf-899c-328794de149f/
SH256 hash:
c211a9c834895a9c6894f86327d8b28920a63070acb67be379639398f3c316ce
MD5 hash:
f7904944c42eeff93f9840f501ce4a9d
SHA1 hash:
0e7b734d095d9500203472646ea5ee5d521b0ffc
Link:
https://www.unpac.me/results/a2f1461e-859e-42cf-899c-328794de149f/
SH256 hash:
9bd7b6f993657893e3d06eac033339afac6dda77e451f72e114f4ec19fb6b157
MD5 hash:
741fa4302597a591467265f02ded885b
SHA1 hash:
d3bb3f1a0f1172fbc23df1e60c9739d6927f5700
Link:
https://www.unpac.me/results/a2f1461e-859e-42cf-899c-328794de149f/
SH256 hash:
99c5b8857c688ac8e42aae72287146e335f3a5aa945743de36b263fa8af6ea62
MD5 hash:
76b33a791a966bb2b16edf960e0dfb0a
SHA1 hash:
df3c47c25341a8ca19af3eadbbcf1989d6d4aea3
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/a2f1461e-859e-42cf-899c-328794de149f/
SH256 hash:
0cb5b7ff8e8c0f5237ba70ab51aaa0fb9f33e437fc6a5e9878af1192da450c37
MD5 hash:
c116ec5c7688d16265572bd9b21bc401
SHA1 hash:
a9b6764c5d13402b383fc47d82937f7ca4d84eeb
Link:
https://www.unpac.me/results/a2f1461e-859e-42cf-899c-328794de149f/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c38bf4313b8f/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/c38bf4313b8f4cd5a20790b4e52f431e125551d049dfdddf1a36bb67733041ab

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 c38bf4313b8f4cd5a20790b4e52f431e125551d049dfdddf1a36bb67733041ab

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/46767/

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