MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 438536b11aafa429cb30bcbcea58cdd24ec138c0e9986991d2869f259618d863. 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: 13

Intelligence 13 IOCs YARA 11 File information Comments 1

SHA256 hash:	438536b11aafa429cb30bcbcea58cdd24ec138c0e9986991d2869f259618d863
SHA3-384 hash:	a3f8bc73e68d826c889c3bd0720bc071c7164ffa0b2c1ba86ed322e76ffc82df569e5e9e8fa3e9d3539cb76cac22a06e
SHA1 hash:	4f01bf86b087f6951d5822360a53c4f5319ecf07
MD5 hash:	da4c79f61e41baeeefb1c8653e8e271f
humanhash:	lima-green-zebra-tennessee
File name:	da4c79f61e41baeeefb1c8653e8e271f
Download:	download sample
Signature	Formbook Create hunting rule
File size:	562'176 bytes
First seen:	2022-08-18 07:43:59 UTC
Last seen:	2022-08-18 08:32:54 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'454 x Formbook, 12'202 x SnakeKeylogger)
ssdeep	6144:ylLuRq+wVpzEK2qWAdfr0yPhcMr7A/BmyanLsQtDSay8P2zMOMA53Xh7l2vE:ylLp+CpYKSAdLvnyA/k8Mfh1
TLSH	T180C4911C2B470762FD6EC230D9610A45BB262F132782B9C91FCB92CA875FDEDED41994
TrID	69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 9.9% (.EXE) Win64 Executable (generic) (10523/12/4) 6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.7% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):
dhash icon	ccf4e8e8f2484858 (2 x AgentTesla, 1 x Formbook)
Reporter	zbetcheckin
Tags:	32 exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

312

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

formbook

ID:

File name:

da4c79f61e41baeeefb1c8653e8e271f

Verdict:

Malicious activity

Analysis date:

2022-08-18 07:44:52 UTC

Tags:

formbook trojan stealer

Link:

https://app.any.run/tasks/5bc9e373-ff3d-4ac2-909a-90b419ee0b03

Note:

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

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/299528/

Detection(s):

SecuriteInfo.com.Trojan.Siggen18.34919.19260.17347.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Launching a process

Creating a file

Launching the default Windows debugger (dwwin.exe)

Searching for the window

Unauthorized injection to a system process

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

obfuscated packed

Link:

https://www.filescan.io/uploads/62fdee033cbb9456913ec9ac/reports/9b279323-282f-49e0-b87f-79a333b5455d/overview

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:

Malicious

Link:

https://analyze.intezer.com/analyses/825e4b0e-64e0-4395-892e-bbde7a1c836c

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

92 / 100

Link:

https://www.joesandbox.com/analysis/1053653

Signature

Antivirus detection for URL or domain

Binary or sample is protected by dotNetProtector

C2 URLs / IPs found in malware configuration

Injects a PE file into a foreign processes

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Writes to foreign memory regions

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/438536b11aafa429cb30bcbcea58cdd24ec138c0e9986991d2869f259618d863/

Threat name:

ByteCode-MSIL.Trojan.AveMariaRAT

Status:

Malicious

First seen:

2022-08-11 20:02:10 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

22 of 26 (84.62%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ioctnmi2v6sctszqxs6ouwgn2jhmcoga5gmgteosq2pslfqy3brq._file

Verdict:

malicious

Label(s):

formbook

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:s82e rat spyware stealer trojan

Link:

https://tria.ge/reports/220818-jktaksedc7/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Program crash

Suspicious use of SetThreadContext

Uses the VBS compiler for execution

Formbook payload

Formbook

Unpacked files

SH256 hash:

8a07a5a34ce68ba01be70632a026df2092e674d5b4109f3ab19a13b12fdbcabf

MD5 hash:

45b6a66a8eae98c305810d87aa278217

SHA1 hash:

eb4b00c968bd500b17f28cf1ed3dff02d73461a8

Detections:

win_formbook_g0

win_formbook_auto

FormBook

Link:

https://www.unpac.me/results/c96bd88b-c68e-49ee-983b-8bac05c19c05/

SH256 hash:

438536b11aafa429cb30bcbcea58cdd24ec138c0e9986991d2869f259618d863

MD5 hash:

da4c79f61e41baeeefb1c8653e8e271f

SHA1 hash:

4f01bf86b087f6951d5822360a53c4f5319ecf07

Link:

https://www.unpac.me/results/c96bd88b-c68e-49ee-983b-8bac05c19c05/

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

Threat name:

iSpy Keylogger

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/438536b11aafa429cb30bcbcea58cdd24ec138c0e9986991d2869f259618d863

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:	INDICATOR_EXE_Packed_Babel Create hunting rule
Author:	ditekSHen
Description:	Detects executables packed with Babel

Rule name:	INDICATOR_EXE_Packed_Dotfuscator Create hunting rule
Author:	ditekSHen
Description:	Detects executables packed with Dotfuscator

Rule name:	INDICATOR_EXE_Packed_dotNetProtector Create hunting rule
Author:	ditekSHen
Description:	Detects executables packed with dotNetProtector

Rule name:	INDICATOR_EXE_Packed_Goliath Create hunting rule
Author:	ditekSHen
Description:	Detects executables packed with Goliath

Rule name:	INDICATOR_EXE_Packed_SmartAssembly Create hunting rule
Author:	ditekSHen
Description:	Detects executables packed with SmartAssembly

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

Rule name:	meth_get_eip Create hunting rule
Author:	Willi Ballenthin

Rule name:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

Rule name:	pe_imphash Create hunting rule

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

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

File information

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

Web download

Formbook

exe 438536b11aafa429cb30bcbcea58cdd24ec138c0e9986991d2869f259618d863

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2274191/

Cape

https://www.capesandbox.com/analysis/299528/

Comments

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zbet commented on 2022-08-18 07:44:02 UTC

url : hxxp://103.207.38.192/hxxp/scrss.exe