MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5f5b3cac18cd8f32585cb2dee2e1a2d84423d2660589c9232e7bdde0b65db899. 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 33 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5f5b3cac18cd8f32585cb2dee2e1a2d84423d2660589c9232e7bdde0b65db899
SHA3-384 hash: 5ec0917bc856b33032627b783bc1edeced93a796db56b109d572ed978062c21ee520ed5b1a1886a58c6ef899f7ad0483
SHA1 hash: e5099c0613e14b78697af921b7c19567e3e13f01
MD5 hash: 9287523fd9341bc505e3d26f3cf82160
humanhash: yankee-bakerloo-quebec-ohio
File name:Statement Of Account.rar
Download: download sample
Signature Formbook
Create hunting rule
File size:600'325 bytes
First seen:2025-03-03 15:50:39 UTC
Last seen:Never
File type: rar
MIME type:application/x-rar
ssdeep 12288:oow8kmII4RUau2sMUsTPlpr9yML4WqJKz44EZM8AagfBsW5V0e83kPT2m:o2pr4RUau2sMxP8ML4WqiwZ7gZz183kT
TLSH T1A7D423037ED7D9FA0F0092E785A0F459456B6C84E3BBCE331FAC26D936417E99A1D4A0
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 rar


Avatar
cocaman
Malicious email (T1566.001)
From: "=?UTF-8?B?IlRpZmZhbnkgRmVuZ+mmruiQjeiQjSI=?=<tiffany.feng@lotes.com.cn>" (likely spoofed)
Received: "from lotes.com.cn (unknown [45.144.212.136]) "
Date: "03 Mar 2025 15:49:30 -0800"
Subject: "RE: Statement Of Account"
Attachment: "Statement Of Account.rar"

Intelligence

File Origin
# of uploads :
1
# of downloads :
84
Origin country :
CH CH
File Archive Information

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

File name:Statement Of Account.exe
File size:1'094'656 bytes
SHA256 hash: 4499c00b92a2830d6b775fc8c833a661f646272881c6b2229e38ba238d3fb36b
MD5 hash: 312fbf0f38fb9da74fe9eee4835a8005
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67c5768dc668b65489bea20d
Tags:
autoit emotet
Verdict:
Malicious
Labled as:
Ransom.Wacatac
Link:
https://www.hybrid-analysis.com/sample/5f5b3cac18cd8f32585cb2dee2e1a2d84423d2660589c9232e7bdde0b65db899
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/5f5b3cac18cd8f32585cb2dee2e1a2d84423d2660589c9232e7bdde0b65db899/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-03-03 14:22:21 UTC
File Type:
Binary (Archive)
Extracted files:
24
AV detection:
18 of 38 (47.37%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=l5ntzlayzwhtewc4wlpofync3bcchutgawe4sizoppo6bns5xcmq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:mg63 discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/250303-ta7qbs1zht/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
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/5f5b3cac18cd8f32585cb2dee2e1a2d84423d2660589c9232e7bdde0b65db899

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
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: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:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
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:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_detect_tls_callbacks
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:SUSP_Imphash_Mar23_3
Create hunting rule
Author:Arnim Rupp (https://github.com/ruppde)
Description:Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:Internal Research
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)
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach
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 5f5b3cac18cd8f32585cb2dee2e1a2d84423d2660589c9232e7bdde0b65db899

(this sample)

Formbook

Executable exe 4499c00b92a2830d6b775fc8c833a661f646272881c6b2229e38ba238d3fb36b

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 4499c00b92a2830d6b775fc8c833a661f646272881c6b2229e38ba238d3fb36b
  
Dropping
Formbook
  
Dropping
MD5 312fbf0f38fb9da74fe9eee4835a8005

Comments