MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f3298ef809962d972156b31709e10d4af7ab11c9ea3e2ce3412f052bf9784d26. 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: 5

Intelligence 5 IOCs YARA 21 File information Comments

SHA256 hash:	f3298ef809962d972156b31709e10d4af7ab11c9ea3e2ce3412f052bf9784d26
SHA3-384 hash:	ea9609e5631b3c12baf0393185e4462f7303e5e62abde0d53a5be3e24438459c13524c8ab9b6bb4675eafc62b508161b
SHA1 hash:	653317c37f159144151288716af4a4702eb041f9
MD5 hash:	edf46e0240a7993d532633a83af664b6
humanhash:	michigan-london-november-oxygen
File name:	Invoice copy.pdf.r00
Download:	download sample
Signature	Formbook Create hunting rule
File size:	602'543 bytes
First seen:	2024-04-18 06:46:58 UTC
Last seen:	2024-04-18 06:47:46 UTC
File type:	r00
MIME type:	application/x-rar
ssdeep	12288:FL9IVWGjXFZEIa7FtDlIBKL0vzQ7EmCzC28H0hEuAOTIG8HYaPDBEw17Z:FLWVW4fEt5tDl1LZRCzC28WpHEGUJlEY
TLSH	T141D423F75762E88921D57884B8249FC384956F1F6178B2F035D7E52C836AFAE0D434E8
TrID	61.5% (.RAR) RAR compressed archive (v5.0) (8000/1) 38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Reporter	cocaman
Tags:	INVOICE r00

cocaman

Malicious email (T1566.001)
From: "Ariel@sunlink-energy.com" (likely spoofed)
Received: "from klenco-asia.com (unknown [185.222.58.83]) "
Date: "18 Apr 2024 01:19:13 +0200"
Subject: "RE: AW: Purchase Order"
Attachment: "Invoice copy.pdf.r00"

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:	Invoice copy.pdf.exe
File size:	622'592 bytes
SHA256 hash:	37fd7b8035bd49b8dfad405a793428dda8cbf623de0133818756d05a1191d8b7
MD5 hash:	49e038fcffc683c025060ca5610e0ad3
MIME type:	application/x-dosexec
Signature	Formbook

Vendor Threat Intelligence

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

masquerade obfuscated packed

Link:

https://www.filescan.io/uploads/6620c1e63137a4e0f3baceac/reports/0e57f7cb-05a0-4473-bfde-0a65b97fb773/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/f3298ef809962d972156b31709e10d4af7ab11c9ea3e2ce3412f052bf9784d26

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/f3298ef809962d972156b31709e10d4af7ab11c9ea3e2ce3412f052bf9784d26/

Threat name:

Win32.Trojan.Taskun

Status:

Malicious

First seen:

2024-04-18 01:59:13 UTC

File Type:

Binary (Archive)

Extracted files:

AV detection:

20 of 38 (52.63%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=6muy56ajsywzoikwwmlqtyinjl32weoj5i7czy2bf4csx6lyjuta._file

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

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__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

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:	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:	NET Create hunting rule
Author:	malware-lu

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

Rule name:	pe_imphash Create hunting rule

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

Rule name:	SUSP_RAR_with_PDF_Script_Obfuscation Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects RAR file with suspicious .pdf extension prefix to trick users
Reference:	Internal Research

Rule name:	SUSP_RAR_with_PDF_Script_Obfuscation_RID34A4 Create hunting rule
Author:	Florian Roth
Description:	Detects RAR file with suspicious .pdf extension prefix to trick users
Reference:	Internal Research