MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2f03bad2bc7bf08deadf708941a5e1337c94c53b1dd3980b7a9d65bde4a4b404. 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: 15


Intelligence 15 IOCs YARA 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2f03bad2bc7bf08deadf708941a5e1337c94c53b1dd3980b7a9d65bde4a4b404
SHA3-384 hash: f29d741c0656e24246572448a64fb083431630a581f34937ff9f5cd80af93681e281b663822529aedb3e8417b2b1b96c
SHA1 hash: e97114c8180135b2f480f5e67f469c3403618c50
MD5 hash: ff657ddc83226d6f028e88735959061c
humanhash: zebra-wyoming-football-south
File name:2f03bad2bc7bf08deadf708941a5e1337c94c53b1dd3980b7a9d65bde4a4b404
Download: download sample
Signature Formbook
Create hunting rule
File size:1'025'536 bytes
First seen:2026-08-10 14:05:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'190 x AgentTesla, 20'337 x Formbook, 12'364 x SnakeKeylogger)
ssdeep 24576:ISoNcnWE97RlOByAFaCSQyVzHLvuPrnmgGkh:ISooWE9llOByAECSQoLGPLmgGk
TLSH T1132523A8AA55DE13D8CA0BF60871F77FA2709E88F610D5578BEDDEC778189052C4C982
TrID 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win64 Executable (generic) (6522/11/2)
4.5% (.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 :
1
# of downloads :
52
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/00e82935-7c9f-4c04-931e-6d310cca1d5b/
Malware family:
formbook
Create hunting rule
ID:
1
File name:
5d5455155d392270b533a2694cff3506d02a46c3e415222486b85ee69c9af282.zip
Verdict:
Malicious activity
Analysis date:
2026-07-08 13:19:09 UTC
Tags:
arch-exec formbook xloader stealer
Link:
https://app.any.run/tasks/c007e2b1-ea39-45f8-99b0-608c0b4896b8

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/79711/
Result
Verdict:
Malware
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:
packed
Link:
https://www.filescan.io/uploads/6a79db045ca504a8496e1222/reports/c661843e-6dc5-4ac0-b89c-3ce1ec01e156/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/2f03bad2bc7bf08deadf708941a5e1337c94c53b1dd3980b7a9d65bde4a4b404
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-08T06:50:00Z UTC
Last seen:
2026-08-10T06:33:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/2f03bad2bc7bf08deadf708941a5e1337c94c53b1dd3980b7a9d65bde4a4b404/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/30196391-3c98-45ed-8998-af31e9923a80
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/2f03bad2bc7bf08deadf708941a5e1337c94c53b1dd3980b7a9d65bde4a4b404
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2f03bad2bc7bf08deadf708941a5e1337c94c53b1dd3980b7a9d65bde4a4b404/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2026-07-08 13:19:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
25 of 36 (69.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=f4b3vuv4ppyi32w7oceudjpbgn6jjrj3dxjzqc32tvs33zfewqca._file
Verdict:
malicious
Label(s):
Formbook
Create hunting rule
Link:
https://reports.threatray.com/b2fc964d-d295-4c56-9123-b78b489fd1b0
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260810-rfd9vszglf/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
2f03bad2bc7bf08deadf708941a5e1337c94c53b1dd3980b7a9d65bde4a4b404
MD5 hash:
ff657ddc83226d6f028e88735959061c
SHA1 hash:
e97114c8180135b2f480f5e67f469c3403618c50
Link:
https://www.unpac.me/results/9fd1ce4c-af03-4f1e-88a1-79b89d0dd990/
SH256 hash:
b857821ade3427a9fd9d83f42150344bc905bda8328fa66ba49d499af64f23ee
MD5 hash:
7842d12d9e37c75076133be5b9904cb2
SHA1 hash:
425f1edac0b53d62a20749a6a69e5a3b260c595f
Link:
https://www.unpac.me/results/9fd1ce4c-af03-4f1e-88a1-79b89d0dd990/
SH256 hash:
facc70336ed8a93882bc179307c1ddfeaa35ec60a3ca19a045a3adc307f01d3b
MD5 hash:
38004fc09430e85d757fe852f75e0ff8
SHA1 hash:
e1c356b11fcdca493c41d55db72fbe6b6f47a6fb
Link:
https://www.unpac.me/results/9fd1ce4c-af03-4f1e-88a1-79b89d0dd990/
SH256 hash:
2e3b417f85274b3535ed4f9b6addd6c16c5148e047552518013f3099d4258624
MD5 hash:
af017d5427ca771f0cc8498e96983681
SHA1 hash:
44d92a33fe2818c181304df0999dc814b75738f4
Link:
https://www.unpac.me/results/9fd1ce4c-af03-4f1e-88a1-79b89d0dd990/
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_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
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:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/79711/

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