MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3474b0f77b365c5bb21ee74a83575788f6009263c725c592cfef674e22915d4. 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 30 File information Comments 1

SHA256 hash:	a3474b0f77b365c5bb21ee74a83575788f6009263c725c592cfef674e22915d4
SHA3-384 hash:	12cc0393343fb7c0c228da762d0ae4d6be42cb729115ee709bc4ec3ce65d44b1846d1731de8099765bdf9d86bd8a3681
SHA1 hash:	85b8ecde652c7fcd28b609f4ca34e8233e282ffe
MD5 hash:	9c4b350eb7315c2f6f4b2eb64bccd918
humanhash:	shade-mockingbird-minnesota-harry
File name:	9c4b350eb7315c2f6f4b2eb64bccd918
Download:	download sample
Signature	Formbook Create hunting rule
File size:	605'840 bytes
First seen:	2024-06-06 01:36:49 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
ssdeep	12288:LZxxAYeicWjZSvFNlHXOBDLFo/uL4dbV1I2DmzDy7VS04tP:LPxLgWlMJHXOBDLFUdbV1I2DV79G
Threatray	4'181 similar samples on MalwareBazaar
TLSH	T1ADD41252B868C545D02763B10C55D0BA1BB6BE94AFE0C22F79D17F8F78333847B54A89
TrID	44.4% (.EXE) Win64 Executable (generic) (10523/12/4) 21.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 8.7% (.ICL) Windows Icons Library (generic) (2059/9) 8.5% (.EXE) OS/2 Executable (generic) (2029/13) 8.4% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):
dhash icon	e0aaaa2b0303aad0 (34 x Formbook, 21 x AveMariaRAT, 18 x AgentTesla)
Reporter	zbetcheckin
Tags:	64 exe FormBook signed

Code Signing Certificate

Organisation:	Microsoft Code Signing PCA 2011
Issuer:	Microsoft Code Signing PCA 2011
Algorithm:	sha256WithRSAEncryption
Valid from:	2024-06-05T04:58:15Z
Valid to:	2025-06-05T04:58:15Z
Serial number:	0c9b1d71d5337145af71d4930cd2cf8b
Thumbprint Algorithm:	SHA256
Thumbprint:	bd0cae124b2142a8c715a98e31581d0bf9cfbf1fc1723423edd5ba55358b6841
Source:	This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin

# of uploads :

# of downloads :

390

Origin country :

Vendor Threat Intelligence

Malware family:

formbook

ID:

File name:

a3474b0f77b365c5bb21ee74a83575788f6009263c725c592cfef674e22915d4.exe

Verdict:

Malicious activity

Analysis date:

2024-06-06 01:37:50 UTC

Tags:

formbook xloader stealer spyware

Link:

https://app.any.run/tasks/0c4b72c0-d5cd-4ce3-85bd-df33061ad143

Note:

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

Detection(s):

SecuriteInfo.com.Win64.PWSX-gen.2389.1159.UNOFFICIAL

Gathering data

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Launching a process

Searching for synchronization primitives

Launching the default Windows debugger (dwwin.exe)

Сreating synchronization primitives

Launching cmd.exe command interpreter

Searching for the window

Setting browser functions hooks

Unauthorized injection to a system process

Unauthorized injection to a browser process

Verdict:

Malicious

Link:

https://www.hybrid-analysis.com/sample/a3474b0f77b365c5bb21ee74a83575788f6009263c725c592cfef674e22915d4

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.

Verdict:

Suspicious

Link:

https://analyze.intezer.com/analyses/11bffa49-a804-42ae-8988-d8200a7513e8

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1452759

Signature

AI detected suspicious sample

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Found malware configuration

Injects a PE file into a foreign processes

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 submitted file

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Snort IDS alert for network traffic

System process connects to network (likely due to code injection or exploit)

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Tries to detect virtualization through RDTSC time measurements

Writes to foreign memory regions

Yara detected AntiVM3

Yara detected FormBook

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/a3474b0f77b365c5bb21ee74a83575788f6009263c725c592cfef674e22915d4

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/a3474b0f77b365c5bb21ee74a83575788f6009263c725c592cfef674e22915d4/

Threat name:

Win64.Trojan.FormBook

Status:

Malicious

First seen:

2024-06-05 09:36:09 UTC

File Type:

PE+ (.Net Exe)

Extracted files:

AV detection:

21 of 38 (55.26%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=unduwd3xwns4lozb5z2kqnlvpchwacjghrzfywjm733hjyrjcxka._file

Verdict:

malicious

Label(s):

formbook

Formbook

39904c5d67aebdeb68b5bc799559dda7fe7bd9db166fd8dc72e7e4c0ce5d6491

Formbook

3b746894d0a71f6162d96d2af36bea8d794d7e23af44c5536fcf97d416510a6e

Formbook

4c60c35f29e69092f5e26e18d43f332f00f33be5006dfb0f9e8cc7327ec6db92

Formbook

b878010c65295ac447edb5249825bc8ef4ba872b9a584b3dfbe4ad8f25634bfb

Formbook

bcf3670fe7a029d453f1887f16b97b8577235980909aa282d410cd927fb53a7f

Formbook

d0b94b855d2f24add1edf6b3a6ecae24e4366f181a1ccd0bcd3b27e94de95bc0

Formbook

e3c50af5dfca67fd9af9530c801ef172bde856241cf6b2c8596421b9a7ae8882

Formbook

+ 4'171 additional samples on MalwareBazaar

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:muti persistence rat spyware stealer trojan

Link:

https://tria.ge/reports/240606-b1tbhsdh61/

Behaviour

Modifies Internet Explorer settings

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Adds policy Run key to start application

Formbook payload

Formbook

Unpacked files

SH256 hash:

a3474b0f77b365c5bb21ee74a83575788f6009263c725c592cfef674e22915d4

MD5 hash:

9c4b350eb7315c2f6f4b2eb64bccd918

SHA1 hash:

85b8ecde652c7fcd28b609f4ca34e8233e282ffe

Link:

https://www.unpac.me/results/54dc2eb4-1d66-4871-96f8-7712f773de90/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/a3474b0f77b3/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

0.79

Link:

https://yomi.yoroi.company/submissions/a3474b0f77b365c5bb21ee74a83575788f6009263c725c592cfef674e22915d4

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:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

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:	DebuggerException__SetConsoleCtrl 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:	Formbook Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Formbook in memory
Reference:	internal research

Rule name:	maldoc_find_kernel32_base_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	maldoc_getEIP_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	meth_get_eip Create hunting rule
Author:	Willi Ballenthin

Rule name:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	pe_no_import_table Create hunting rule
Description:	Detect pe file that no import table

Rule name:	PE_Potentially_Signed_Digital_Certificate Create hunting rule
Author:	albertzsigovits

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:	Windows_Trojan_Formbook Create hunting rule
Author:	@malgamy12

Rule name:	Windows_Trojan_Formbook_1112e116 Create hunting rule
Author:	Elastic Security
Reference:	https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach

Rule name:	win_formbook_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Detects win.formbook.

Rule name:	win_formbook_w0 Create hunting rule
Author:	@malgamy12

File information

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

Web download

Formbook

exe a3474b0f77b365c5bb21ee74a83575788f6009263c725c592cfef674e22915d4

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2876572/

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_DLL_CHARACTERISTICS	Missing dll Security Characteristics (GUARD_CF)	high

Comments

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zbet commented on 2024-06-06 01:36:51 UTC

url : hxxps://hartac.co.za/wp-content/plugins/dac83144a70c491c9bb53bbf00eb4cc1/xt/mmd/Tlcf4ubbOhvrFYkon.exe