MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6781be8abda50b0cc7d27b9466f7b39572f978cf16151092554e7b4557f0ac06. 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: 18

Intelligence 18 IOCs YARA 17 File information Comments

SHA256 hash:	6781be8abda50b0cc7d27b9466f7b39572f978cf16151092554e7b4557f0ac06
SHA3-384 hash:	1860bcc533d85972c4f414b9b9dd3c67fd12e42c24b1700e02fbcb8dcef201e96cfd71c47d37d1db113f38081f51c077
SHA1 hash:	0f11ac97736fb42fd30d6c4abf1da4549e8f0101
MD5 hash:	17043ee76cd32800262fa06cfc3ac690
humanhash:	sodium-fourteen-rugby-cola
File name:	271JaJbQjMLGbcc.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	683'528 bytes
First seen:	2025-06-10 12:54:10 UTC
Last seen:	2025-06-13 16:53:52 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep	12288:disP8yffxahqfDGZW17k0+YHPEd8MwP0WAra3OjuBGy1kuOEXuVjCqfkR:n8yffxQqbuWZk9DNWAr6u+3OCq6
Threatray	2'570 similar samples on MalwareBazaar
TLSH	T143E401052AA99D05C4BB1FB61B78C17153B13ECA7923D7178ED1ACDB3DA27800A0779B
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	James_inthe_box
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

459

Origin country :

Vendor Threat Intelligence

Malware family:

formbook

ID:

File name:

271JaJbQjMLGbcc.exe

Verdict:

Malicious activity

Analysis date:

2025-06-10 16:01:54 UTC

Tags:

formbook stealer netreactor xloader

Link:

https://app.any.run/tasks/7c1ad6bd-dffd-4cc3-a08f-5c66cadf42dd

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/8832/

Detection(s):

SecuriteInfo.com.BackDoor.AgentTeslaNET.35.24426.19580.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68482af907b5e8c1cfe61e71

Tags:

krypt spawn msil

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

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

Creating a file in the %temp% directory

Launching a process

Creating a file

Launching cmd.exe command interpreter

Setting browser functions hooks

Unauthorized injection to a system process

Adding an exclusion to Microsoft Defender

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

expired-cert invalid-signature obfuscated packed packed packer_detected signed vbnet

Link:

https://www.filescan.io/uploads/68482af8171e01f9593ba713/reports/9eb50a8b-2f62-46e9-92c7-9da1106e349d/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/6781be8abda50b0cc7d27b9466f7b39572f978cf16151092554e7b4557f0ac06

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/bb08e4fd-9af7-48a8-ae65-82988f21d80c

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1711009

Signature

.NET source code contains potential unpacker

Adds a directory exclusion to Windows Defender

Allocates memory in foreign processes

C2 URLs / IPs found in malware configuration

Found malware configuration

Injects a PE file into a foreign processes

Joe Sandbox ML detected suspicious sample

Loading BitLocker PowerShell Module

Malicious sample detected (through community Yara rule)

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 dropped file

Multi AV Scanner detection for submitted file

Performs DNS queries to domains with low reputation

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet

Sigma detected: Scheduled temp file as task from temp location

Switches to a custom stack to bypass stack traces

Tries to detect virtualization through RDTSC time measurements

Uses schtasks.exe or at.exe to add and modify task schedules

Uses threadpools to delay analysis

Writes to foreign memory regions

Yara detected AntiVM3

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/6781be8abda50b0cc7d27b9466f7b39572f978cf16151092554e7b4557f0ac06

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/6781be8abda50b0cc7d27b9466f7b39572f978cf16151092554e7b4557f0ac06/

Threat name:

ByteCode-MSIL.Backdoor.FormBook

Status:

Malicious

First seen:

2025-06-10 07:27:51 UTC

AV detection:

20 of 36 (55.56%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=m6a35cv5uufqzr6spokgn55tsvzps6gpcykrbesvjz5ukv7qvqda._file

Verdict:

malicious

Label(s):

formbook

unc_loader_037

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:hi26 discovery execution rat spyware stealer trojan

Link:

https://tria.ge/reports/250610-p5b5paxrz3/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Checks computer location settings

Uses the VBS compiler for execution

Command and Scripting Interpreter: PowerShell

Formbook payload

Formbook

Formbook family

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/1bea4001-e89e-487f-a6f3-74f6efe577bb

Unpacked files

SH256 hash:

6781be8abda50b0cc7d27b9466f7b39572f978cf16151092554e7b4557f0ac06

MD5 hash:

17043ee76cd32800262fa06cfc3ac690

SHA1 hash:

0f11ac97736fb42fd30d6c4abf1da4549e8f0101

Link:

https://www.unpac.me/results/d97742ab-d759-4793-a0d2-10f761ae059c/

SH256 hash:

b05b93c7521ffc25450379ffa249fd95130534415f71d1cdddb2b49cf9a7db72

MD5 hash:

dfae8ae376a2bf891012e43a42db5452

SHA1 hash:

46ad5c26e56777860f9ab9fb0d0332655a0a1c36

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/d97742ab-d759-4793-a0d2-10f761ae059c/

SH256 hash:

eb5a83bcd5b26949a60b01fe19a8b344236c203639181996548a9141aa304a77

MD5 hash:

31a5c0f812c45ae7fc467b7c58f7def7

SHA1 hash:

624d58312f0bb7a83c9a5e7a4bbf5652fcfb8249

Detections:

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/d97742ab-d759-4793-a0d2-10f761ae059c/

Parent samples :

fdb6c88152718e866ca157adc2f75661ff5866fc225a32fc47559c4cabd88fd1
6781be8abda50b0cc7d27b9466f7b39572f978cf16151092554e7b4557f0ac06

SH256 hash:

78ce5985f2ff20719b2924f128206c43d71af6eca0c88fdabeecbfef63057741

MD5 hash:

6440b1f79d6f8a2c00a8397e463becf2

SHA1 hash:

b11cecafb882f82c5fc59d60466baf0ad5dbac30

Detections:

win_formbook_w0

win_formbook_g0

win_formbook_auto

FormBook

Windows_Trojan_Formbook

Formbook

Link:

https://www.unpac.me/results/d97742ab-d759-4793-a0d2-10f761ae059c/

Parent samples :
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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:	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:	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:	INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438 Create hunting rule
Author:	ditekSHen
Description:	Detects executables signed with stolen, revoked or invalid certificates

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_Digital_Certificate Create hunting rule
Author:	albertzsigovits

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:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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/8832/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

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