MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e537e75a818a7a134e591d4eb6b06286d63b2871a3bc0a345f11e3047404a180. 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: 10

Intelligence 10 IOCs YARA 21 File information Comments

SHA256 hash:	e537e75a818a7a134e591d4eb6b06286d63b2871a3bc0a345f11e3047404a180
SHA3-384 hash:	c89e836a58627b63049ac06f8bb965eda419994c70f863bfdd23e526330657bdbf96da06e53608378e3ee56d5b4b1924
SHA1 hash:	7320979c8956c0abd36fa8654360560dcfc10ff8
MD5 hash:	d0ab9891a754bb56884d90d30368e3a1
humanhash:	august-oranges-muppet-wisconsin
File name:	REVISED-INVOICE.zip
Download:	download sample
Signature	Formbook Create hunting rule
File size:	615'074 bytes
First seen:	2025-02-26 02:49:20 UTC
Last seen:	Never
File type:	zip
MIME type:	application/zip
ssdeep	12288:wEbXIebBftae6aTg0RNZCKe8FSlxcXpBqzTVDL3vqyj/:WebBMLaTguZCKe8MPcMVDD1
TLSH	T11FD423FD3A5397E595B6313E80BCF7669BCE0C3881E4594FA6362D86E1C440C8F44C9A
Magika	zip
Reporter	cocaman
Tags:	INVOICE zip

cocaman

Malicious email (T1566.001)
From: "accounts@desertsign.com" (likely spoofed)
Received: "from [195.211.191.129] (unknown [195.211.191.129]) "
Date: "25 Feb 2025 18:46:04 -0800"
Subject: "REVISED-INVOICE"
Attachment: "REVISED-INVOICE.zip"

Intelligence

File Origin

# of uploads :

# of downloads :

678

Origin country :

File Archive Information

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

File name:	3xi73dos6I7cy7Z.exe
File size:	680'960 bytes
SHA256 hash:	36e9bfc5337aa8a4dd2c8c24087a3cdc3f589df01ec12c0d81a28eb62b67b9e4
MD5 hash:	78fe6d31c4628807f53c8114f6007111
MIME type:	application/x-dosexec
Signature	Formbook

Vendor Threat Intelligence

Detection(s):

SecuriteInfo.com.Win32.MalwareX-gen.28822.23533.UNOFFICIAL

Verdict:

Malicious

Score:

96.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67be81b228ab76d43a5d2bb1

Tags:

virus micro msil

Result

Verdict:

Unknown

File Type:

PE File

Link:

https://app.docguard.net/e537e75a818a7a134e591d4eb6b06286d63b2871a3bc0a345f11e3047404a180/results/dashboard

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

obfuscated obfuscated packed packed packer_detected vbnet

Link:

https://www.filescan.io/uploads/67be81686222db7f23dbc1ca/reports/9398f023-cf69-4acc-ba8b-5bcd57686dab/overview

Verdict:

Suspicious

Labled as:

Troj/Krypt

Link:

https://www.hybrid-analysis.com/sample/e537e75a818a7a134e591d4eb6b06286d63b2871a3bc0a345f11e3047404a180

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/e537e75a818a7a134e591d4eb6b06286d63b2871a3bc0a345f11e3047404a180

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Score:

100%

Verdict:

Malware

File Type:

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:my18 discovery execution rat spyware stealer trojan

Link:

https://tria.ge/reports/250226-hvez9sxj17/

Behaviour

Modifies registry class

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Checks computer location settings

Command and Scripting Interpreter: PowerShell

Formbook payload

Formbook

Formbook family

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

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/e537e75a818a7a134e591d4eb6b06286d63b2871a3bc0a345f11e3047404a180

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:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

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:	Suspicious_Latam_MSI_and_ZIP_Files Create hunting rule
Author:	eremit4, P4nd3m1cb0y
Description:	Detects suspicious .msi and .zip files used in Latam banking trojan campaigns.

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)