MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9c81f19ebfb4fae6821b3e26463805beb8e045a24e224a210e46d3ccb1010a29. 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: 8

Intelligence 8 IOCs YARA 20 File information Comments

SHA256 hash:	9c81f19ebfb4fae6821b3e26463805beb8e045a24e224a210e46d3ccb1010a29
SHA3-384 hash:	651a50313b907bce70c962a6273c648f5d64949c73283c0fc478e44bc1388487e77d4edea0c5f097ccaa52dc50b4a81f
SHA1 hash:	8ef7777030f376c6dbcbe4691e717201ca0f50c2
MD5 hash:	cd76643b4225edbf5a1c064a3f0b9b68
humanhash:	ink-fillet-red-shade
File name:	PO 44223.rar
Download:	download sample
Signature	Formbook Create hunting rule
File size:	500'188 bytes
First seen:	2023-11-10 07:33:07 UTC
Last seen:	Never
File type:	rar
MIME type:	application/x-rar
ssdeep	12288:p1/uccjXWb38E2lL8OSCiwjFNdCz4pS3fjZaNfpu73jSynmBSgqGeod:pNpOgElmwpN0zPbZ1TS0lC
TLSH	T146B423E85984D0B2EF0320077045305FE682F3A61A0DDAE8C26627E3DED5CEA9E5D747
TrID	61.5% (.RAR) RAR compressed archive (v5.0) (8000/1) 38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Reporter	cocaman
Tags:	FormBook rar RFQ

cocaman

Malicious email (T1566.001)
From: "Priya Saurabh <priya@ncsusinc.com>" (likely spoofed)
Received: "from [45.62.170.208] (unknown [45.62.170.208]) "
Date: "9 Nov 2023 16:25:01 -0800"
Subject: "URGENT// RFQ # 44223 - availability"
Attachment: "PO 44223.rar"

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:	PO 44223.exe
File size:	513'460 bytes
SHA256 hash:	aaedbdb62b4df38b6c95bc44b7dd284a675d84db3bffafbf33cc5913c2073340
MD5 hash:	9bb9b14103f4f129cd6846b798f57b73
MIME type:	application/x-dosexec
Signature	Formbook

Vendor Threat Intelligence

Detection(s):

Sanesecurity.Rogue.0hr.20231110-1135.UNOFFICIAL

Result

Verdict:

Unknown

File Type:

PE File

Link:

https://app.docguard.net/9c81f19ebfb4fae6821b3e26463805beb8e045a24e224a210e46d3ccb1010a29/results/dashboard

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

control installer lolbin overlay packed shell32

Link:

https://www.filescan.io/uploads/654ddcee3dd412119bf4dbff/reports/4484f646-e53d-424f-8173-0612d3109065/overview

Verdict:

Malicious

Labled as:

Mal/DrodRar

Link:

https://www.hybrid-analysis.com/sample/9c81f19ebfb4fae6821b3e26463805beb8e045a24e224a210e46d3ccb1010a29

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.

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/9c81f19ebfb4fae6821b3e26463805beb8e045a24e224a210e46d3ccb1010a29/

Threat name:

Win32.Trojan.Generic

Status:

Suspicious

First seen:

2023-11-10 01:32:07 UTC

File Type:

Binary (Archive)

Extracted files:

AV detection:

17 of 38 (44.74%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=tsa7dhv7wt5onaq3hytemoafx24oarncjyreuiioi3j4zmibbiuq._file

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:st58 rat spyware stealer trojan

Link:

https://tria.ge/reports/231110-jrjpqafd84/

Behaviour

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

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

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/9c81f19ebfb4fae6821b3e26463805beb8e045a24e224a210e46d3ccb1010a29

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:	Check_OutputDebugStringA_iat Create hunting rule

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_g0 Create hunting rule
Author:	Slavo Greminger, SWITCH-CERT

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 9c81f19ebfb4fae6821b3e26463805beb8e045a24e224a210e46d3ccb1010a29

(this sample)

Formbook

exe aaedbdb62b4df38b6c95bc44b7dd284a675d84db3bffafbf33cc5913c2073340

Delivery method

Distributed via e-mail attachment

Dropping

SHA256 aaedbdb62b4df38b6c95bc44b7dd284a675d84db3bffafbf33cc5913c2073340

Dropping

Formbook

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