MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 558cf2db49af1e46acdfccf900bc9f9847b850c3372948968110fd005ab905a3. 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: 7

Intelligence 7 IOCs YARA 6 File information Comments

SHA256 hash:	558cf2db49af1e46acdfccf900bc9f9847b850c3372948968110fd005ab905a3
SHA3-384 hash:	8844ab7e50464b77a83923fe9bd67de26c73e538278a882dafb37de6af6a1224c82c5c29c77af90ad02ed601d460ff60
SHA1 hash:	f59d10c8ce4dd44ee461d479d0bbc049b8e049ff
MD5 hash:	cfb6f33cd94817d43c2f0960de6e59ba
humanhash:	foxtrot-yellow-paris-cold
File name:	invoice and packing list.rar
Download:	download sample
Signature	Formbook Create hunting rule
File size:	15'179 bytes
First seen:	2025-03-11 18:16:38 UTC
Last seen:	2025-03-12 08:01:48 UTC
File type:	rar
MIME type:	application/x-rar
ssdeep	384:MWJelkUq/n1HCv1yb7PoAiHpCgd4NmxQGhQM:MWJ8uCN2N/gd4NSQ0QM
TLSH	T1E562CFC1D508BDB274F0EA8E4FBE2B07A9BD2CCD279DB150809EB1C93350489706A58B
TrID	61.5% (.RAR) RAR compressed archive (v5.0) (8000/1) 38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Magika	rar
Reporter	cocaman
Tags:	FormBook INVOICE payment rar

cocaman

Malicious email (T1566.001)
From: ""Wang weishun" <weishun@hoscoagency.com>" (likely spoofed)
Received: "from hoscoagency.com (unknown [45.144.212.136]) "
Date: "11 Mar 2025 14:18:38 -0700"
Subject: "RE:PAYMENT ADVISE(103) TT/USD/8145/2025"
Attachment: "invoice and packing list.rar"

Intelligence

File Origin

# of uploads :

# of downloads :

161

Origin country :

File Archive Information

This file archive contains 2 file(s), sorted by their relevance:

File name:	invoice and packing list.scr
File size:	38'912 bytes
SHA256 hash:	5df3cc983cea806c5bda3747bce97f051997d14cf692f2128fb2ad575e56f049
MD5 hash:	7f879ef74891855e9437830ae83d4f40
MIME type:	application/x-dosexec
Signature	Formbook

File name:	32512
File size:	20 bytes
SHA256 hash:	f78beaa8a648d5fea615e001cf967454caf3607d17409b7fa64ecc4ed4e781db
MD5 hash:	dc50bc98ce9fb9d33cb41255cb360332
MIME type:	application/octet-stream
Signature	Formbook

Vendor Threat Intelligence

Verdict:

Clean

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67d02ad94fd7d3fd0e082ed8

Tags:

n/a

Verdict:

Malicious

Labled as:

Ransom.Wacatac

Link:

https://www.hybrid-analysis.com/sample/558cf2db49af1e46acdfccf900bc9f9847b850c3372948968110fd005ab905a3

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/558cf2db49af1e46acdfccf900bc9f9847b850c3372948968110fd005ab905a3/

Threat name:

Win32.Trojan.Jalapeno

Status:

Malicious

First seen:

2025-03-11 14:23:54 UTC

File Type:

Binary (Archive)

Extracted files:

AV detection:

24 of 38 (63.16%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=kwgpfw2jv4penlg7zt4qbpe7tbd3qugdg4uurfubcd6qawvzawrq._file

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:mg63 discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/250311-ystcwasrw4/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Program crash

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Formbook payload

Formbook

Formbook family

Suspicious use of NtCreateUserProcessOtherParentProcess

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/558cf2db49af1e46acdfccf900bc9f9847b850c3372948968110fd005ab905a3

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

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)