MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 787828a05df993c9b051fafe52095df491a34df778147f454840d11f96031df0. 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: 20

Intelligence 20 IOCs YARA 15 File information Comments

SHA256 hash:	787828a05df993c9b051fafe52095df491a34df778147f454840d11f96031df0
SHA3-384 hash:	c74120d2a74bbe09f3e45086c56d212351c7a03fdae7ac06c08fc7b1372bedd9a74b81c7e9951640180d75658ee94009
SHA1 hash:	718c4c91001446e9a784aae5d7838cb3598dcb8d
MD5 hash:	5a2f3ac87a744ba29b7efab688978b83
humanhash:	lamp-blossom-thirteen-sad
File name:	PO-0024632025.PDF.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	822'784 bytes
First seen:	2025-02-26 11:47:17 UTC
Last seen:	2025-03-03 09:51:06 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'854 x AgentTesla, 19'783 x Formbook, 12'304 x SnakeKeylogger)
ssdeep	12288:GNL7/6YeXY/e1VQ98Kb/2GHQYOlYSn6mOz6qdYOWTVTZyw2ZQhWIR4fIxA6:BXQIGHQsSn69z6MRWRTZyhQhYQH
Threatray	2'221 similar samples on MalwareBazaar
TLSH	T17A05DF051398CA09D12F2B7C69B4C1714FB9AE6EF962D3164ED4ACEB7E72B009D52307
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	adrian__luca
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

399

Origin country :

Vendor Threat Intelligence

Malware family:

formbook

ID:

File name:

PO-0024632025.PDF.exe

Verdict:

Malicious activity

Analysis date:

2025-02-26 13:00:50 UTC

Tags:

formbook stealer xloader

Link:

https://app.any.run/tasks/dd0f8e68-f568-4e36-8014-f1fcc0a52900

Note:

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

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67beffde28ab76d43a5d4967

Tags:

virus shell msil

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a file in the %AppData% directory

Enabling the 'hidden' option for recently created files

Adding an access-denied ACE

Creating a process with a hidden window

Creating a file in the %temp% directory

Launching a process

Creating a file

Launching cmd.exe command interpreter

Setting browser functions hooks

Forced shutdown of a system process

Adding an exclusion to Microsoft Defender

Enabling autorun by creating a file

Unauthorized injection to a system process

Unauthorized injection to a browser process

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

masquerade obfuscated obfuscated packed packed packer_detected phishing vbnet

Link:

https://www.filescan.io/uploads/67beff893afc3763bec7ad1a/reports/e9755790-4f04-4b65-8e05-a4333790050d/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/787828a05df993c9b051fafe52095df491a34df778147f454840d11f96031df0

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/47cfc764-1e6b-4062-9289-9e81c38cf4c2

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1624648

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 direct / indirect Syscall (likely to bypass EDR)

Found malware configuration

Initial sample is a PE file and has a suspicious name

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)

Modifies the prolog of user mode functions (user mode inline hooks)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

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

Sigma detected: Suspicious Double Extension File Execution

Switches to a custom stack to bypass stack traces

Tries to detect virtualization through RDTSC time measurements

Uses an obfuscated file name to hide its real file extension (double extension)

Uses netsh to modify the Windows network and firewall settings

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

Writes to foreign memory regions

Yara detected AntiVM3

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/787828a05df993c9b051fafe52095df491a34df778147f454840d11f96031df0

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/787828a05df993c9b051fafe52095df491a34df778147f454840d11f96031df0/

Threat name:

Win32.Backdoor.FormBook

Status:

Suspicious

First seen:

2025-02-24 08:11:39 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

18 of 24 (75.00%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=pb4cric57gj4tmcr7l7feck56si2gtpxpakh6rkiidir7fqddxya._file

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:sy30 discovery execution rat spyware stealer trojan

Link:

https://tria.ge/reports/250226-n3g3gsyn13/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

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

Command and Scripting Interpreter: PowerShell

Formbook payload

Formbook

Formbook family

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/50ffcdcb-a970-41a9-bef0-2d9db3294501

Unpacked files

SH256 hash:

787828a05df993c9b051fafe52095df491a34df778147f454840d11f96031df0

MD5 hash:

5a2f3ac87a744ba29b7efab688978b83

SHA1 hash:

718c4c91001446e9a784aae5d7838cb3598dcb8d

Link:

https://www.unpac.me/results/d3c29ab1-e889-40ca-acae-f99adbd7e3b3/

SH256 hash:

e80a463e16b14b43e4112cb8f0cb0cf44ff245be592202042373a02b9ea4deb9

MD5 hash:

bbea1aafd0d7058f6f46c8ceff355f96

SHA1 hash:

14ca07073c0a943129823d6532358a55761a203f

Link:

https://www.unpac.me/results/d3c29ab1-e889-40ca-acae-f99adbd7e3b3/

SH256 hash:

7b01713da834d3c7d0877a3a8032fded18d53a6d28097a36915e7631b9fcc6fc

MD5 hash:

020b400607297402dc628a7e94749c9c

SHA1 hash:

3ba6db9d75ce4ebd1241dcba8f07a224135d1ab1

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/d3c29ab1-e889-40ca-acae-f99adbd7e3b3/

SH256 hash:

bffa80737ab1b184301096dfefc9f9d87da22db574a94d1b52bebdb5beeeb35d

MD5 hash:

d6a6181cf9c66f9163742637d1441458

SHA1 hash:

dafcc1eca2fbe3b39cc0d45ebb97cd81c520d2f6

Detections:

win_formbook_w0

win_formbook_g0

win_formbook_auto

FormBook

Windows_Trojan_Formbook

Formbook

Link:

https://www.unpac.me/results/d3c29ab1-e889-40ca-acae-f99adbd7e3b3/

Parent samples :

787828a05df993c9b051fafe52095df491a34df778147f454840d11f96031df0
c61c8d43eccf83eec74d4bb03b0856a5916d00a486f1d4b46bf7e17295d246b5

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/787828a05df9/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/787828a05df993c9b051fafe52095df491a34df778147f454840d11f96031df0

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:	AgentTesla_DIFF_Common_Strings_01 Create hunting rule
Author:	schmidtsz
Description:	Identify partial Agent Tesla strings

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:	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:	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.

Malspam

Formbook

exe 787828a05df993c9b051fafe52095df491a34df778147f454840d11f96031df0

(this sample)

Delivery method

Distributed via e-mail attachment

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
CHECK_TRUST_INFO	Requires Elevated Execution (Unrestricted:true)	high

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