MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 983b12f644e45edc4d81850e16ce5627f63cddd55505376da5f1eb1180f3b5b9. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 983b12f644e45edc4d81850e16ce5627f63cddd55505376da5f1eb1180f3b5b9
SHA3-384 hash: ed70ca642f07ee931b03628c7dab307184585e1af3f9046ecc63f029f73771f6e332e75abcff4ee1261cc73b0888e462
SHA1 hash: a506db2b1a65afa27369b843414de075614acd09
MD5 hash: dcaa092f297a059329b7a9360fc92157
humanhash: ink-video-six-speaker
File name:Orden de Compra.rar
Download: download sample
Signature GuLoader
Create hunting rule
File size:445'348 bytes
First seen:2024-07-14 06:37:13 UTC
Last seen:Never
File type: rar
MIME type:application/x-rar
ssdeep 6144:5Z4x5cePt2sLD6bCQC195jcw+EKsfQxKo+vEoMdKCiqq0xF+VJrnNolNOBgKXxX:58bPtBLuXC5jX+UlofonqtyVJriOBPx
TLSH T1E4942361B921C7A6FEBF67CE0E61303287851DE03DF176AA8C20A6597B601DD37A04CC
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Reporter cocaman
Tags:GuLoader rar


Avatar
cocaman
Malicious email (T1566.001)
From: "Francis Faz <francis.faz@rafesa.com.mx>" (likely spoofed)
Received: "from ginez.com (unknown [185.222.58.78]) "
Date: "10 Jul 2024 13:59:28 +0200"
Subject: "Orden de Compra"
Attachment: "Orden de Compra.rar"

Intelligence

File Origin
# of uploads :
1
# of downloads :
277
Origin country :
CH CH
File Archive Information

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

File name:Orden de Compra.exe
File size:790'416 bytes
SHA256 hash: 542372832b12830cb655e1147ad87b01299e5ee3af5fb5e73b92e63ed7ff2c62
MD5 hash: da08a67fe7fff505184c2dc97a731d9c
MIME type:application/x-dosexec
Signature GuLoader
Vendor Threat Intelligence
Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6693724bbcca3f923eb466eewin7simulatehigh_evasion
Tags:
Encryption Execution Network Static Stealth Injector
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
guloader installer lolbin microsoft_visual_cc overlay packed shell32
Link:
https://www.filescan.io/uploads/6693724b5009cac812374c2c/reports/ce501ee6-4dfc-4530-aec9-dfaebc22cac2/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/983b12f644e45edc4d81850e16ce5627f63cddd55505376da5f1eb1180f3b5b9
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/983b12f644e45edc4d81850e16ce5627f63cddd55505376da5f1eb1180f3b5b9/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2024-07-10 11:08:34 UTC
File Type:
Binary (Archive)
Extracted files:
11
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ta5rf5se4rpnytmbquhbntswe73dzxovkucto3nf6hvrdahtww4q._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240714-hj7wxazgkn/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Loads dropped DLL
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
GuLoader
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/983b12f644e45edc4d81850e16ce5627f63cddd55505376da5f1eb1180f3b5b9

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: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

rar 983b12f644e45edc4d81850e16ce5627f63cddd55505376da5f1eb1180f3b5b9

(this sample)

GuLoader

Executable exe 542372832b12830cb655e1147ad87b01299e5ee3af5fb5e73b92e63ed7ff2c62

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 542372832b12830cb655e1147ad87b01299e5ee3af5fb5e73b92e63ed7ff2c62
  
Dropping
GuLoader
  
Dropping
MD5 da08a67fe7fff505184c2dc97a731d9c

Comments