MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4d737ac425a1c0bb32aa1d8d33a7cdfbcaf497af59257428e6433af20630e97. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f4d737ac425a1c0bb32aa1d8d33a7cdfbcaf497af59257428e6433af20630e97
SHA3-384 hash: ea6853eab34eba890a09c43ee7c94b331848d3959a62e28f6f1f68d5c874b7b0cd6accfc6cb95d3fdf045be6bb919ec2
SHA1 hash: b8ecfa84ece82b904de6afcd73eaafb332a6a233
MD5 hash: b3e83d8057646cfb9e26e506c9db1591
humanhash: quiet-oxygen-gee-paris
File name:71084394.zip
Download: download sample
Signature Formbook
Create hunting rule
File size:336'936 bytes
First seen:2022-12-16 12:49:44 UTC
Last seen:2022-12-16 12:50:06 UTC
File type: zip
MIME type:application/zip
ssdeep 6144:Ua9kriFAcbfpz1nOa4YSiUYzzNgezsk4NUIE6Xfjh8o/Y7aAiTFtsY78REkOv:bkriqOjFUUbmUIE6XfT/4iRm7ekOv
TLSH T1E4642395A7ABEDB369E27B35AB572EDC50D2D1D903F2FEC0167E7111410B580E8C8A82
TrID 80.0% (.ZIP) ZIP compressed archive (4000/1)
20.0% (.PG/BIN) PrintFox/Pagefox bitmap (640x800) (1000/1)
Reporter cocaman
Tags:FormBook zip


Avatar
cocaman
Malicious email (T1566.001)
From: ""Denise Arnold" <Arnold@v-line.com>" (likely spoofed)
Received: "from hosted-by.rootlayer.net (unknown [45.137.22.237]) "
Date: "8 Dec 2022 08:42:06 +0100"
Subject: "Purchase order 4500381478/1830171"
Attachment: "71084394.zip"

Intelligence

File Origin
# of uploads :
2
# of downloads :
117
Origin country :
n/a
File Archive Information

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

File name:71084394.exe
File size:348'314 bytes
SHA256 hash: c8517f6c638a7d458d5dc46ba0c8b62c22165996339338788f9632cba03570c5
MD5 hash: 071d5dc67ed8f6be856d7f23d77382fc
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Foxhole.Zip_exenum416.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FileRepMalware.9653.2564.UNOFFICIAL
Create hunting rule

Result
Verdict:
Unknown
File Type:
PE File
Link:
https://app.docguard.net/f4d737ac425a1c0bb32aa1d8d33a7cdfbcaf497af59257428e6433af20630e97/results/dashboard
Gathering data
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/f4d737ac425a1c0bb32aa1d8d33a7cdfbcaf497af59257428e6433af20630e97
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/f4d737ac425a1c0bb32aa1d8d33a7cdfbcaf497af59257428e6433af20630e97/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-12-08 08:10:02 UTC
File Type:
Binary (Archive)
Extracted files:
5
AV detection:
19 of 39 (48.72%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6tltplcclioaxmzkuhmngot4366k6sl26wjfoquomqz26iddb2lq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:yurm persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/221216-rvqanseh39/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.63
Link:
https://yomi.yoroi.company/submissions/f4d737ac425a1c0bb32aa1d8d33a7cdfbcaf497af59257428e6433af20630e97

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
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

File information

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

Malspam

Formbook

zip f4d737ac425a1c0bb32aa1d8d33a7cdfbcaf497af59257428e6433af20630e97

(this sample)

Formbook

Executable exe c8517f6c638a7d458d5dc46ba0c8b62c22165996339338788f9632cba03570c5

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 c8517f6c638a7d458d5dc46ba0c8b62c22165996339338788f9632cba03570c5
  
Dropping
Formbook

Comments