MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8f851a6b9ed143766d3fd2cb899de35b57259a422fdf9e81a8213b7198f2018e. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8f851a6b9ed143766d3fd2cb899de35b57259a422fdf9e81a8213b7198f2018e
SHA3-384 hash: 915dd65ff1ce14c0b016014901118b8d4b0000cadb022529fbd46c41252e69244114e1269d7c7d617970dd25cab903b3
SHA1 hash: 25fc50e825a5c17941b6b1051cfd2e5a0a04410a
MD5 hash: c7dcf55f6ec9f2d6044ce631e17f11d9
humanhash: alabama-uniform-finch-chicken
File name:rPaymentCopy_pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'128'968 bytes
First seen:2026-02-03 04:30:10 UTC
Last seen:2026-02-03 05:17:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'755 x AgentTesla, 19'664 x Formbook, 12'252 x SnakeKeylogger)
ssdeep 24576:+zZN9u1HddYItzYZ4225WbcyfYOQnecq4JphAH/S4ilkwPkO1e:+yUZfIWbeOQnjJXAfSRlkwPhe
Threatray 15 similar samples on MalwareBazaar
TLSH T1ED35015623989E02C6BA03F51421E23CC3B19D9B7570C384BEDDA9D77B66B011B0ABD7
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 FXOLabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
117
Origin country :
BR BR
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/adb7f093-6414-4da6-b8c3-e62495431223/
Malware family:
formbook
Create hunting rule
ID:
1
File name:
rPaymentCopy_pdf.exe
Verdict:
Malicious activity
Analysis date:
2026-02-03 04:31:48 UTC
Tags:
auto-startup susp-lnk formbook xloader
Link:
https://app.any.run/tasks/12adcd17-99b1-4de5-9607-5f1b3be9fb7d

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/51402/
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.61866368.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=698179f64cec271dd7054e17
Tags:
agenttesla underscore autorun
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Searching for synchronization primitives
Connection attempt
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Launching a process
Creating a file
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
bitmap expired-cert formbook invalid-signature masquerade packed packed signed stego
Link:
https://www.filescan.io/uploads/698179eeb6bd365f0a69dc7a/reports/d3766f61-445a-4e3d-b296-01990a9d86a2/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/8f851a6b9ed143766d3fd2cb899de35b57259a422fdf9e81a8213b7198f2018e
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-02-02T21:38:00Z UTC
Last seen:
2026-02-05T02:05:00Z UTC
Hits:
~1000
Detections:
HEUR:Trojan.MSIL.PowerShell.gen PDM:Trojan.Win32.Generic
Link:
https://opentip.kaspersky.com/8f851a6b9ed143766d3fd2cb899de35b57259a422fdf9e81a8213b7198f2018e/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bddc1ccb-e520-439a-b239-a105f76b499e
Score:
77%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8f851a6b9ed143766d3fd2cb899de35b57259a422fdf9e81a8213b7198f2018e
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.35 Win 32 Exe x86
Link:
https://app.malva.re/file/c7dcf55f6ec9f2d6044ce631e17f11d9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8f851a6b9ed143766d3fd2cb899de35b57259a422fdf9e81a8213b7198f2018e/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/8f851a6b9ed143766d3fd2cb899de35b57259a422fdf9e81a8213b7198f2018e
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2026-02-03 04:11:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
37
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=r6cru2462fbxm3j72lfythpdlnlslgscf7pz5aniee5xdghsagha._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
172c3076e5d6bfe9089a1e092d1286e77337bc3680db32539e3a7bf69b7d0560
Formbook
4eef5964d4be888f65a3410d0f60fd3559021aff06bf1448c919e294b7ecb72e
Formbook
5a721e420c6fc129a198af6fd7458202c574cff68e0b60b4372a8af5767bd2d9
Formbook
5c0bdefeb2e965c9cb1aa42e28b84b31e11693b4438c47e97be98fb1b496d940
Formbook
99e787914a65e928c023070c9a029cf58d4e405e4952bbb1142b1c8e53edfcc6
Formbook
c6aa56afa7a6941d9bb8786b07e192ea996d3a133c992285b58349cc5c204561
Formbook
e4ff62b66b02a6f78870344b002d83ae80391d1cc0b1651085f23f28d41f027b
Formbook
error
Formbook
f4160d848ce8fc3d06604dbed868251d960839dc351673a5aec208ba48ebfc7e
Formbook
+ 5 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/260203-e46b2aax7h/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Checks computer location settings
Drops startup file
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
Unpacked files
SH256 hash:
8f851a6b9ed143766d3fd2cb899de35b57259a422fdf9e81a8213b7198f2018e
MD5 hash:
c7dcf55f6ec9f2d6044ce631e17f11d9
SHA1 hash:
25fc50e825a5c17941b6b1051cfd2e5a0a04410a
Link:
https://www.unpac.me/results/609d0c35-8623-4433-b800-231897b0a04b/
SH256 hash:
7574aad8b457abdd1f45b8181ba85496d47718e3e0e246a303061d9c86e3c57c
MD5 hash:
6ef9af68e2076a646975f7f9dd6475f6
SHA1 hash:
0e5c86acb143b0f27bfb385f28d50b26c6c5bf80
Link:
https://www.unpac.me/results/609d0c35-8623-4433-b800-231897b0a04b/
SH256 hash:
0f9283af43096ab334e667a0eb7fa354c572396c8201fdc024a5be45eec39410
MD5 hash:
bc85aaa0763a4cfe0d1c878eef619e31
SHA1 hash:
28cde47e1f0e739412c5a78fef02da5c257919dc
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/609d0c35-8623-4433-b800-231897b0a04b/
SH256 hash:
e9444a34de53f193036ebaf4fd05e9f609d89eedaf1b62142fdbd07f9cf7a0ef
MD5 hash:
34c4b5ea26b215509f98b28c51caf045
SHA1 hash:
a9b50d02951038d387c5dccf7785b70ae4dd6fb6
Link:
https://www.unpac.me/results/609d0c35-8623-4433-b800-231897b0a04b/
SH256 hash:
450a4755294d0eef7f4a70fedf27fb9a17b15c3ccd3115c2ba4c57e4d5661811
MD5 hash:
cf9b2df51011ee70ba4465efb0fc2f47
SHA1 hash:
9f9b552f40ab26aa90c17a658aed7c08a8a31eb6
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/609d0c35-8623-4433-b800-231897b0a04b/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8f851a6b9ed1/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/8f851a6b9ed143766d3fd2cb899de35b57259a422fdf9e81a8213b7198f2018e

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:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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 8f851a6b9ed143766d3fd2cb899de35b57259a422fdf9e81a8213b7198f2018e

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/51402/

Comments