MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21b4028dfe2eb31df7f3f7e40d69cf24aed625be13abcffc8be919f884d3c702. 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 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 21b4028dfe2eb31df7f3f7e40d69cf24aed625be13abcffc8be919f884d3c702
SHA3-384 hash: 5459b3f404a2cd83a5fd811d77fde5fc0502bfe1b552ec071131e3419bc75af25203ab9eb9b7aef65238646042a7d6ff
SHA1 hash: 8f687494ec3bff5d97a1c1f3fc8e286f3b045be7
MD5 hash: 7a905bf9ab37af9cbd9c01920e199ce1
humanhash: indigo-neptune-item-bakerloo
File name:Purchase Inquiry.rar
Download: download sample
Signature Formbook
Create hunting rule
File size:874'260 bytes
First seen:2023-11-10 15:40:07 UTC
Last seen:Never
File type: rar
MIME type:application/x-rar
ssdeep 24576:7P6CmXlTUBLb8LnzgutSYcUamRjk457Q2+4U0n4zu37Pvk:ejqB/+nzN7nPJ7Q2+Pz2vk
TLSH T11F05334BE9CC68AEFF16C9A199831D9AE699753957223D89724CB673088C5F300B58C3
TrID 58.3% (.RAR) RAR compressed archive (v-4.x) (7000/1)
41.6% (.RAR) RAR compressed archive (gen) (5000/1)
Reporter cocaman
Tags:FormBook rar


Avatar
cocaman
Malicious email (T1566.001)
From: "Eva shen <eva@whgls.com>" (likely spoofed)
Received: "from whgls.com (unknown [91.92.242.151]) "
Date: "10 Nov 2023 03:34:08 -0800"
Subject: "RE: PURCHASE INQUIRY"
Attachment: "Purchase Inquiry.rar"

Intelligence

File Origin
# of uploads :
1
# of downloads :
95
Origin country :
CH CH
File Archive Information

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

File name:Purchase Inquiry.exe
File size:965'632 bytes
SHA256 hash: fd2ac4af2e4d90f117a8ba49d77cc480f0ad6a8a6cfa7479384d68ce27939f1a
MD5 hash: eea9bf4a16ab377328a59bde0a0c76df
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Result
Verdict:
Unknown
File Type:
PE File
Link:
https://app.docguard.net/21b4028dfe2eb31df7f3f7e40d69cf24aed625be13abcffc8be919f884d3c702/results/dashboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/654e4f0e993fbf888b6e7127/reports/f68d423c-3a06-4c49-addd-31575c5006a0/overview
Verdict:
Malicious
Labled as:
Mal/DrodRar
Link:
https://www.hybrid-analysis.com/sample/21b4028dfe2eb31df7f3f7e40d69cf24aed625be13abcffc8be919f884d3c702
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/21b4028dfe2eb31df7f3f7e40d69cf24aed625be13abcffc8be919f884d3c702/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2023-11-10 08:28:10 UTC
AV detection:
19 of 37 (51.35%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=eg2afdp6f2zr357t67sa22opesxnmjn6cov477el5em7rbgty4ba._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/231110-xd2v2acf3t/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
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/21b4028dfe2eb31df7f3f7e40d69cf24aed625be13abcffc8be919f884d3c702

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:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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

rar 21b4028dfe2eb31df7f3f7e40d69cf24aed625be13abcffc8be919f884d3c702

(this sample)

Formbook

Executable exe fd2ac4af2e4d90f117a8ba49d77cc480f0ad6a8a6cfa7479384d68ce27939f1a

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 fd2ac4af2e4d90f117a8ba49d77cc480f0ad6a8a6cfa7479384d68ce27939f1a
  
Dropping
Formbook
  
Dropping
MD5 eea9bf4a16ab377328a59bde0a0c76df

Comments