MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8357bb98a030a5838b78da9450401e9ef2457defd9ebcd7c0ec025d7f7786d89. 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


GuLoader


Vendor detections: 6


Intelligence 6 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8357bb98a030a5838b78da9450401e9ef2457defd9ebcd7c0ec025d7f7786d89
SHA3-384 hash: 88950e0bf13bb85bf0c6a7c62bc916f14c0ab808dfbb4e43008ef012e3cd5698978eb80c499dd6df9b1fa0cf3fa419e7
SHA1 hash: 9cb192911242d6b7c5e842be80434e2a86c51677
MD5 hash: 6f1805890ac285167f499cced29da939
humanhash: failed-crazy-oranges-grey
File name:doc05092024.7z
Download: download sample
Signature GuLoader
Create hunting rule
File size:529'982 bytes
First seen:2024-05-10 08:21:40 UTC
Last seen:Never
File type: 7z
MIME type:application/x-7z-compressed
ssdeep 12288:qiMrlm4Fi1blECSGheOzaTqirSaAER5HXx9R:rMrQIablECXovvXjR
TLSH T16DB42340439ABE09CDA811FC3140091AB15233618D129BAA9EFF73FE725D67D7A839F5
TrID 57.1% (.7Z) 7-Zip compressed archive (v0.4) (8000/1)
42.8% (.7Z) 7-Zip compressed archive (gen) (6000/1)
Reporter cocaman
Tags:7z GuLoader RFQ


Avatar
cocaman
Malicious email (T1566.001)
From: "David Cowell <cowell@ongtricoc.cfd>" (likely spoofed)
Received: "from mail.ongtricoc.cfd (unknown [159.89.239.77]) "
Date: "Thu, 9 May 2024 01:10:34 +0000 (UTC)"
Subject: "RE: RFQ/OQ//doc05092024/New Supplier"
Attachment: "doc05092024.7z"

Intelligence

File Origin
# of uploads :
1
# of downloads :
94
Origin country :
CH CH
File Archive Information

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

File name:doc05092024.exe
File size:660'072 bytes
SHA256 hash: 22028442e5ae09f1e7deee991d512fc21fb424d7f7d8a25b1e482dc442f070ad
MD5 hash: a79731419b516a329926e2e20d3e55c8
MIME type:application/x-dosexec
Signature GuLoader
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.Packed2.46800.20044.32493.UNOFFICIAL
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/663dd9345826be9faada3342/reports/2900d507-04cb-49de-a3be-88e0aab5b51e/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/8357bb98a030a5838b78da9450401e9ef2457defd9ebcd7c0ec025d7f7786d89
Score:
97%
Verdict:
Malware
File Type:
ARCHIVE
Link:
https://malprob.io/report/8357bb98a030a5838b78da9450401e9ef2457defd9ebcd7c0ec025d7f7786d89
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8357bb98a030a5838b78da9450401e9ef2457defd9ebcd7c0ec025d7f7786d89/
Threat name:
Win32.Trojan.Vigorf
Create hunting rule
Status:
Malicious
First seen:
2024-05-09 01:31:00 UTC
File Type:
Binary (Archive)
Extracted files:
12
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qnl3xgfagcsyhc3y3kkfaqa6t3zek7pp3hv427aoyas5p53ynweq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
execution persistence
Link:
https://tria.ge/reports/240510-mm9l5ada44/
Behaviour
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
NSIS installer
Enumerates physical storage devices
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
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/8357bb98a030a5838b78da9450401e9ef2457defd9ebcd7c0ec025d7f7786d89

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:Detect_SliverFox_String
Create hunting rule
Author:huoji
Description:Detect files is `SliverFox` malware
Rule name:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:NSIS_April_2024
Create hunting rule
Author:NDA0N
Description:Detects NSIS installers
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits

File information

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

Malspam

GuLoader

7z 8357bb98a030a5838b78da9450401e9ef2457defd9ebcd7c0ec025d7f7786d89

(this sample)

GuLoader

Executable exe 22028442e5ae09f1e7deee991d512fc21fb424d7f7d8a25b1e482dc442f070ad

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 22028442e5ae09f1e7deee991d512fc21fb424d7f7d8a25b1e482dc442f070ad
  
Dropping
MD5 a79731419b516a329926e2e20d3e55c8

Comments