MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b403b77348036ba1247fc5600d17502be114f45ba68fc58dbd848a144170dfa8. 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: 6


Intelligence 6 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b403b77348036ba1247fc5600d17502be114f45ba68fc58dbd848a144170dfa8
SHA3-384 hash: fe1db6026d4e597b66381297cf28468c16fca5de72381d869ae492f9df452ba805f0f18f3d62b3603234c7fdaf15abbf
SHA1 hash: 3501e7b6c4b7a59ab5666043b9271938547e8c44
MD5 hash: bec4e29bad2bb7c98ca3be77a4abf840
humanhash: west-november-eight-triple
File name:Purchase Samples-404995.zip
Download: download sample
Signature Formbook
Create hunting rule
File size:537'025 bytes
First seen:2023-09-11 10:16:53 UTC
Last seen:Never
File type: zip
MIME type:application/zip
ssdeep 12288:BysmK82Gqioh395k03Jh0rOsod5qzBg7seHRZIM8qVG:ByQZioh39OoJh4Old5WBg7ss8qVG
TLSH T1F6B4333A70CCC7A513F1E6A1C67A02A27400305346C1977486FBAADDE97758BFD2E52E
TrID 80.0% (.ZIP) ZIP compressed archive (4000/1)
20.0% (.PG/BIN) PrintFox/Pagefox bitmap (640x800) (1000/1)
Reporter cocaman
Tags:FormBook INVOICE zip


Avatar
cocaman
Malicious email (T1566.001)
From: "Account <energy@almcogroup.com>" (likely spoofed)
Received: "from almcogroup.com (unknown [185.216.71.169]) "
Date: "7 Sep 2023 13:26:07 +0200"
Subject: "Request for proforma invoice_83900"
Attachment: "Purchase Samples-404995.zip"

Intelligence

File Origin
# of uploads :
1
# of downloads :
163
Origin country :
CH CH
File Archive Information

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

File name:Purchase Samples-404995.exe
File size:608'256 bytes
SHA256 hash: 49c64577ddf3ce2e1f43c7832736e395b7e205132dd13c42e58be6a769a50832
MD5 hash: b444f067b6e84564db815accdf14d6fe
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Unknown
File Type:
PE File
Link:
https://app.docguard.net/b403b77348036ba1247fc5600d17502be114f45ba68fc58dbd848a144170dfa8/results/dashboard
Gathering data
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b403b77348036ba1247fc5600d17502be114f45ba68fc58dbd848a144170dfa8
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/b403b77348036ba1247fc5600d17502be114f45ba68fc58dbd848a144170dfa8
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/b403b77348036ba1247fc5600d17502be114f45ba68fc58dbd848a144170dfa8/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-09-07 09:16:01 UTC
File Type:
Binary (Archive)
Extracted files:
8
AV detection:
15 of 23 (65.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wqb3o42ianv2cjd7yvqa2f2qfpqrj5c3u2h4ldn5qsfbiqlq36ua._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:hh36 rat spyware stealer trojan
Link:
https://tria.ge/reports/230911-mgj5aafc5x/
Behaviour
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/b403b77348036ba1247fc5600d17502be114f45ba68fc58dbd848a144170dfa8

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

zip b403b77348036ba1247fc5600d17502be114f45ba68fc58dbd848a144170dfa8

(this sample)

Formbook

Executable exe 49c64577ddf3ce2e1f43c7832736e395b7e205132dd13c42e58be6a769a50832

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 49c64577ddf3ce2e1f43c7832736e395b7e205132dd13c42e58be6a769a50832
  
Dropping
MD5 b444f067b6e84564db815accdf14d6fe

Comments