MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2f655c532fdda633b39a0fdf6523d0730a117fb59287897334450631df63708. 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 21 File information Comments

SHA256 hash:	a2f655c532fdda633b39a0fdf6523d0730a117fb59287897334450631df63708
SHA3-384 hash:	6eb65d070245e8ab31f7578d0a2a9f28c08c207a5bf97d96d11ad7aef50d00a9f5d7fa0222bdb72bd1c37b366c5a4b4d
SHA1 hash:	d2b5293bcb1e21157fa3d7f5dcdd2e5e56c95c68
MD5 hash:	041eb0242b210b0be10ecbd2e293db20
humanhash:	potato-september-twenty-mockingbird
File name:	a2f655c532fdda633b39a0fdf6523d0730a117fb59287897334450631df63708
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'321'984 bytes
First seen:	2026-10-19 07:36:31 UTC
Last seen:	Never
File type:	exe
MIME type:	application/vnd.microsoft.portable-executable
ssdeep	24576:BNHUNuA6gKmpV77jsZ/dDrF6ilWtV66URbuPnwBPGBVULFIi9Z6vTYAQO:zUggKSVDK/dPF6CpuPwBPG3ULFT9Z6vf
TLSH	T1D155E1983215F88EC407CEB24D74DD74A5106DAA8717D203A1F73EAFBA3D297AD141E2
TrID	33.1% (.EXE) Win64 Executable (generic) (6522/11/2) 25.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 10.4% (.ICL) Windows Icons Library (generic) (2059/9) 10.3% (.EXE) OS/2 Executable (generic) (2029/13) 10.1% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
dhash icon	68d8d8c8d9a9c1d9 (96 x SnakeKeylogger, 80 x Formbook, 75 x RemcosRAT)
Reporter	adrian__luca
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

ConfuserEx

Details

Link:

https://research.acce.ciphertechsolutions.com/results/8073ff76-9031-4cde-9964-cc4b01e67d08/

Malware family:

n/a

ID:

File name:

exe

Verdict:

No threats detected

Analysis date:

2026-10-19 09:31:30 UTC

Tags:

netreactor

Link:

https://app.any.run/tasks/97024fd9-e5b5-4805-b3f4-04f22e7637b2

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

Formbook

Link:

https://www.capesandbox.com/analysis/92649/

Detection(s):

SecuriteInfo.com.Trojan.Inject7.2613.3766.25.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6ad5cf00afb06e650cd7d48f

Tags:

virus cupi msil

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a custom TCP request

Launching a process

Creating a file

Creating synchronization primitives

Unauthorized injection to a system process

Gathering data

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/a2f655c532fdda633b39a0fdf6523d0730a117fb59287897334450631df63708

Verdict:

Malicious

File Type:

exe x64

First seen:

2026-08-31T03:41:00Z UTC

Last seen:

2026-10-21T03:54:00Z UTC

Hits:

~1000

Link:

https://opentip.kaspersky.com/a2f655c532fdda633b39a0fdf6523d0730a117fb59287897334450631df63708/results?tab=lookup

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/6718aadb-ed1b-4964-9d6c-16e116484019

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/a2f655c532fdda633b39a0fdf6523d0730a117fb59287897334450631df63708

Verdict:

inconclusive

YARA:

7 match(es)

Tags:

.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.85 Win 64 Exe x64

Link:

https://app.malva.re/file/041eb0242b210b0be10ecbd2e293db20

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a2f655c532fdda633b39a0fdf6523d0730a117fb59287897334450631df63708/

Threat name:

ByteCode-MSIL.Trojan.Sonbokli

Status:

Malicious

First seen:

2026-08-31 17:01:29 UTC

File Type:

PE+ (.Net Exe)

Extracted files:

AV detection:

24 of 36 (66.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ul3flrjs7xnggozzud67mur5a4ykcf73leuhrfztirigghpwg4ea._file

Verdict:

malicious

Label(s):

Formbook

Link:

https://reports.threatray.com/bafbb33c-0005-4c52-872d-09b017acbacf

Result

Malware family:

n/a

Score:

5/10

Tags:

n/a

Link:

https://tria.ge/reports/261019-jfzlssstas/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Unpacked files

SH256 hash:

a2f655c532fdda633b39a0fdf6523d0730a117fb59287897334450631df63708

MD5 hash:

041eb0242b210b0be10ecbd2e293db20

SHA1 hash:

d2b5293bcb1e21157fa3d7f5dcdd2e5e56c95c68

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

Link:

https://www.unpac.me/results/337e0879-20ed-4dd9-99a3-c2747c8faf76/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/a2f655c532fd/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/a2f655c532fdda633b39a0fdf6523d0730a117fb59287897334450631df63708

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:	DotNet_RGB_Embedded_AssemblyLoader_Hunt Create hunting rule
Author:	ShadowOpCode
Description:	Hunt .NET bitmap RGB extraction combined with embedded resources and assembly loading

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	HUNT_NET_Loader_ImagePixel_To_AssemblyLoad Create hunting rule
Author:	Anish Bogati
Description:	Hunting: .NET loader that reads pixel data from an embedded image, loads it as a .NET assembly, and runs it via reflection or late binding. Catches bitmap-steganography loaders.

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:	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:	TH_Win_ETW_Bypass_2025_CYFARE Create hunting rule
Author:	CYFARE
Description:	Windows ETW Bypass Detection Rule - 2025
Reference:	https://cyfare.net/

Rule name:	VECT_Ransomware Create hunting rule
Author:	Mustafa Bakhit
Description:	Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

Rule name:	WIN_Malware_Derialock_ForgeAuto_3127f957_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects Derialock (pe, etat extrait)

Rule name:	WIN_Sample_Unique_69354b41 Create hunting rule
Author:	Marjoriefort
Description:	Specimen unique (soumission Bazaar) - strings distinctifs propres au sample
Reference:	69354b41e10daf03d3f3af881b32d5c0fec56b1cfe96629fd4c5263413a42854.exe

File information

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

Cape

https://www.capesandbox.com/analysis/92649/

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