MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 20343f047964ef95901941b2406ee66ec976e2d849abbe991f94b6a0fe634881. 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 1 File information Comments 1

SHA256 hash:	20343f047964ef95901941b2406ee66ec976e2d849abbe991f94b6a0fe634881
SHA3-384 hash:	8a31b4e92f31842671c82da3d73fe27ea26b127613507c16e491bd77df27d674017f6c39151cb6f6c38e110bb16fbcf0
SHA1 hash:	5d71797d395cb395e6c07d30d6aa0e51cc021765
MD5 hash:	ab21cfb5452ba5ee7002abb17c8ba1f4
humanhash:	fix-tennis-equal-sixteen
File name:	ab21cfb5452ba5ee7002abb17c8ba1f4
Download:	download sample
Signature	Formbook Create hunting rule
File size:	606'416 bytes
First seen:	2023-02-15 14:12:21 UTC
Last seen:	2023-02-15 15:43:26 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	57e98d9a5a72c8d7ad8fb7a6a58b3daf (60 x GuLoader, 20 x AZORult, 12 x RemcosRAT)
ssdeep	6144:BalZZ0wa8oGsxld4/9vkYoanxypScRFNJ5kyB/srZqFclhCs7z50mZRw:sZS/8orhYX4p35ky6hzXPCm/
TLSH	T1BFD4D027BB6BC852D021A4FC54639A4D16799D033E1EEE13D2E579BE29B858C1C0F0C7
TrID	47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):
dhash icon	a644fcfef0a9a206 (1 x GuLoader, 1 x Formbook)
Reporter	zbetcheckin
Tags:	32 exe FormBook signed

Code Signing Certificate

Organisation:	Rentierens
Issuer:	Rentierens
Algorithm:	sha256WithRSAEncryption
Valid from:	2022-03-17T16:28:18Z
Valid to:	2025-03-16T16:28:18Z
Serial number:	0b982eac72a491dd
Thumbprint Algorithm:	SHA256
Thumbprint:	0ef7c2880b6039212ec16a7f4c88960d1b23222f6160b89e17705d91b5049aac
Source:	This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin

# of uploads :

# of downloads :

205

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

ab21cfb5452ba5ee7002abb17c8ba1f4

Verdict:

Malicious activity

Analysis date:

2023-02-15 14:36:21 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/4bc5abad-ae81-4e51-9bc4-53951fe2cb44

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/366648/

Detection(s):

SecuriteInfo.com.FileRepMalware.31588.18793.UNOFFICIAL

Result

Verdict:

Suspicious

Maliciousness:

Behaviour

Creating a file in the %temp% directory

Searching for the window

Creating a window

Creating a file

Delayed reading of the file

Searching for the Windows task manager window

Running batch commands

Creating a process with a hidden window

Result

Malware family:

n/a

Score:

5/10

Tags:

n/a

Link:

https://dragonfly.certego.net/analysis/70384/overview

Behaviour

MalwareBazaar

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

buer overlay packed shell32.dll

Link:

https://www.filescan.io/uploads/63ece870846a958a5816797f/reports/3c057ad4-bc9c-4c51-849c-dfb89753e113/overview

Verdict:

Malicious

Labled as:

TR/Injector.skljz

Link:

https://www.hybrid-analysis.com/sample/20343f047964ef95901941b2406ee66ec976e2d849abbe991f94b6a0fe634881

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:

Unknown

Link:

https://analyze.intezer.com/analyses/67880eac-ae3f-424f-8fde-51f9624c4af9

Result

Threat name:

FormBook, GuLoader

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1175766

Behaviour

Behavior Graph:

n/a

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/20343f047964ef95901941b2406ee66ec976e2d849abbe991f94b6a0fe634881/

Threat name:

Win32.Trojan.Guloader

Status:

Malicious

First seen:

2023-02-15 13:34:38 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

18 of 25 (72.00%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=ea2d6bdzmtxzleazigzea3xgn3exnywyjgv35gi7ss3kb7tdjcaq._file

Verdict:

malicious

Result

Malware family:

guloader

Score:

10/10

Tags:

family:guloader downloader

Link:

https://tria.ge/reports/230215-rjed2aca97/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Drops file in Windows directory

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Checks QEMU agent file

Loads dropped DLL

Guloader,Cloudeye

Unpacked files

SH256 hash:

319d8eefa26bbafdd428065c3d150fd683d1a0d7d211396ebcb89f78b591b4ba

MD5 hash:

6b76f40ee66cc720ba6903d47166f912

SHA1 hash:

a3944092feee65097ff7d0a990bda9db32c2225b

Link:

https://www.unpac.me/results/04d6b25f-e7d4-45bf-b71b-c6ccd31a62ba/

SH256 hash:

a0cac4cf4852895619bc7743ebeb89f9e4927ccdb9e66b1bcd92a4136d0f9c77

MD5 hash:

b0c77267f13b2f87c084fd86ef51ccfc

SHA1 hash:

f7543f9e9b4f04386dfbf33c38cbed1bf205afb3

Link:

https://www.unpac.me/results/04d6b25f-e7d4-45bf-b71b-c6ccd31a62ba/

SH256 hash:

b22c8f676dec58be8d25fbad1a37835ffc4029f29aaf79f4dc0337ca73a38782

MD5 hash:

1f49d8af9be9e915d54b2441c4a79adf

SHA1 hash:

1ee4f809c693e31f34bc6d8153664a6dc2c3e499

Detections:

win_flawedammyy_auto

Link:

https://www.unpac.me/results/04d6b25f-e7d4-45bf-b71b-c6ccd31a62ba/

Parent samples :

35dab11414d17ad15b9992ba51ad57fc768fd3f4fc449d50fce08b2c46cbe270
cba8e79b90c98fe396da2d0243e1c98b13bdf586b8e60034be52fe6efdc42ce8
20343f047964ef95901941b2406ee66ec976e2d849abbe991f94b6a0fe634881
22a936860e45162049f713f1305e801899f8eb47a13fdb3504cf978a456efc16
588cdd2ac6167b34eaac919a31bf18ca7831183da6b1c2eccc5966808c2b3733

SH256 hash:

480184452f80f632d70a41d259f5c014215c9f858ced981910c363fe573cc49f

MD5 hash:

a54db25f487ef61a667174fa55d0e8d2

SHA1 hash:

d97a4065013ebaf7fd6858d2cb4ab21016c32eee

Detections:

win_flawedammyy_auto

Link:

https://www.unpac.me/results/04d6b25f-e7d4-45bf-b71b-c6ccd31a62ba/

Parent samples :

63e8c18d647c49586bbea5bebed20a710bf669a3282846efbe053690e563c84b
35dab11414d17ad15b9992ba51ad57fc768fd3f4fc449d50fce08b2c46cbe270
cba8e79b90c98fe396da2d0243e1c98b13bdf586b8e60034be52fe6efdc42ce8
20343f047964ef95901941b2406ee66ec976e2d849abbe991f94b6a0fe634881
22a936860e45162049f713f1305e801899f8eb47a13fdb3504cf978a456efc16
588cdd2ac6167b34eaac919a31bf18ca7831183da6b1c2eccc5966808c2b3733

SH256 hash:

20343f047964ef95901941b2406ee66ec976e2d849abbe991f94b6a0fe634881

MD5 hash:

ab21cfb5452ba5ee7002abb17c8ba1f4

SHA1 hash:

5d71797d395cb395e6c07d30d6aa0e51cc021765

Link:

https://www.unpac.me/results/04d6b25f-e7d4-45bf-b71b-c6ccd31a62ba/

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

Threat name:

Legit

Score:

0.00

Link:

https://yomi.yoroi.company/submissions/20343f047964ef95901941b2406ee66ec976e2d849abbe991f94b6a0fe634881

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.