MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8b2f4933b09675c064d43be29eedb0b1889a99d9fb2efe91af0abb7a61974e3f. 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: 16

Intelligence 16 IOCs YARA 18 File information Comments

SHA256 hash:	8b2f4933b09675c064d43be29eedb0b1889a99d9fb2efe91af0abb7a61974e3f
SHA3-384 hash:	5cb716e10b3880cc3508d34f22d1260d03d603464c694f0dca9d67f1bed01fa324626e5ad11e15f86501e512caab8627
SHA1 hash:	a88a4b325bc37f750e74da1a1937850a07ce7625
MD5 hash:	c0b99bd45fc8dc88559f328f5179163e
humanhash:	fourteen-bulldog-uranus-twenty
File name:	PO 44223.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	354'142 bytes
First seen:	2023-11-09 17:20:20 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	b76363e9cb88bf9390860da8e50999d2 (464 x Formbook, 184 x AgentTesla, 122 x SnakeKeylogger)
ssdeep	6144:F8LxBsFJvMaNQB2+qFXaLQvgpP3RFhyFrBmvmZZRKf+m/BQQBxAaDF0RjSDmx:/FqRq9nvkvrhK0MZKJBQQrAa5ejSw
Threatray	257 similar samples on MalwareBazaar
TLSH	T14D74221A92928CF7E313C1F24DABE2BDFF1FC28A7526451747E5BB370920686164B1B4
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	b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter	cocaman
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

297

Origin country :

Vendor Threat Intelligence

Detection(s):

Sanesecurity.Rogue.0hr.20231109-0333.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Creating a file in the %temp% directory

Creating a process from a recently created file

Launching a process

Сreating synchronization primitives

Launching cmd.exe command interpreter

Setting browser functions hooks

Unauthorized injection to a recently created process by context flags manipulation

Unauthorized injection to a system process

Unauthorized injection to a browser process

Gathering data

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

control installer lolbin overlay packed shell32

Link:

https://www.filescan.io/uploads/654d15023dd412119bf3bbad/reports/730329ed-5ac3-44d4-ba0b-320a5ffa362f/overview

Verdict:

Malicious

Labled as:

Babar.Generic

Link:

https://www.hybrid-analysis.com/sample/8b2f4933b09675c064d43be29eedb0b1889a99d9fb2efe91af0abb7a61974e3f

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/9f4d6379-128a-4d57-8dd7-83cf24ccfa34

Result

Threat name:

FormBook, NSISDropper

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1339898

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)

Found malware configuration

Initial sample is a PE file and has a suspicious name

Machine Learning detection for dropped file

Machine Learning detection for sample

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

Snort IDS alert for network traffic

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

Tries to detect virtualization through RDTSC time measurements

Yara detected FormBook

Yara detected NSISDropper

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/8b2f4933b09675c064d43be29eedb0b1889a99d9fb2efe91af0abb7a61974e3f

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/8b2f4933b09675c064d43be29eedb0b1889a99d9fb2efe91af0abb7a61974e3f/

Threat name:

Win32.Trojan.FormBook

Status:

Malicious

First seen:

2023-11-09 00:49:28 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

23 of 38 (60.53%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=rmxusm5qsz24azguhprj53nqwgejvgoz7mxp5enpbk5xuymxjy7q._file

Verdict:

malicious

Label(s):

formbook

Formbook

92a11969793b832918bec3384ffadd4c626a7888d97454f4790529566d462022

Formbook

982a9a52e532bbfe52941c4ab95c2899c1af75e9a3eee2b1977e3f49e8a3e71e

Formbook

b68dead34ddb1b8d099ea67e476e174b7081bcc293a1a4fa77afc5bce3a51a7c

Formbook

c1aa65f7c2cc6beb7052c8ada46a3139fc01da66890f4153a7c5761292b71d61

Formbook

ee87f646871da3ccd9efda67ac9d782701d42ad639db7f94ef70ff1ae958baf8

Formbook

f34fd6bbeea3da4838e068cb7aa4f867b3d4d8c435dcc8926895d1c033bd7622

Formbook

+ 247 additional samples on MalwareBazaar

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:st58 rat spyware stealer trojan

Link:

https://tria.ge/reports/231109-vwzghscd97/

Behaviour

Gathers network information

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Suspicious use of SetThreadContext

Executes dropped EXE

Loads dropped DLL

Formbook payload

Formbook

Unpacked files

SH256 hash:

699c8d76ae54afb8e500dcd376031594d3cf40a5079a8c1d0aa4e37a8ce914d7

MD5 hash:

02e5c5593b536198b4bc23bec43601fe

SHA1 hash:

6516700de5bc8e495a9c1f50dc31ebff27f50985

Detections:

FormBook

win_formbook_w0

win_formbook_auto

win_formbook_g0

Link:

https://www.unpac.me/results/3b44cd4e-66b7-43a0-a8d4-5be7678a18d8/

Parent samples :
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SH256 hash:

8b2f4933b09675c064d43be29eedb0b1889a99d9fb2efe91af0abb7a61974e3f

MD5 hash:

c0b99bd45fc8dc88559f328f5179163e

SHA1 hash:

a88a4b325bc37f750e74da1a1937850a07ce7625

Link:

https://www.unpac.me/results/3b44cd4e-66b7-43a0-a8d4-5be7678a18d8/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/8b2f4933b096/report/overview.html

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

Threat name:

Formbook

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/8b2f4933b09675c064d43be29eedb0b1889a99d9fb2efe91af0abb7a61974e3f

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:	Formbook Create hunting rule
Author:	kevoreilly
Description:	Formbook Payload

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:	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:	Windows_Trojan_Formbook Create hunting rule
Author:	@malgamy12

Rule name:	Windows_Trojan_Formbook_1112e116 Create hunting rule
Author:	Elastic Security

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.

Malspam

Formbook

rar c02a181d05c0a4faa7fa9c5eac1dc8fa20794e8e854452cd759e7c8d6881852c

Formbook

exe 8b2f4933b09675c064d43be29eedb0b1889a99d9fb2efe91af0abb7a61974e3f

(this sample)

Delivery method

Other

Dropped by

SHA256 c02a181d05c0a4faa7fa9c5eac1dc8fa20794e8e854452cd759e7c8d6881852c

Dropped by

MD5 17c36a8cf4c8c2a87e5531b2b667f596

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample