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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 65d12cbdcd5ccca79ee1ba3aeb99629232333a3551d40449e67b69d4ed383ad9. 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: 9


Intelligence 9 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 65d12cbdcd5ccca79ee1ba3aeb99629232333a3551d40449e67b69d4ed383ad9
SHA3-384 hash: fb4c83f0ad8267a44e038d8a95dcde6f78a4d612a57dd56d959bbf60314bc28fddc272406d0a063693b3976f0b217b8f
SHA1 hash: 95b1daf4d7e9429192d3af464f331c9d8aa532bc
MD5 hash: 67341b7bfe870e7504d3fb11dfe65d8b
humanhash: three-louisiana-single-black
File name:2025_Annual_Leave_Compliance_Report.gz.zip
Download: download sample
Signature GuLoader
Create hunting rule
File size:492'010 bytes
First seen:2026-05-20 17:45:56 UTC
Last seen:Never
File type: zip
MIME type:application/zip
ssdeep 12288:9kD2ayQE2WdCI5CPwI5yR5lIz1CVKGaFs5JY2p9TzHMMnAYW4:9f2k3oyGpC8HyjVzH1Rt
TLSH T1C2A4236733EE2A55F3D00CA5096C3083A2397A579CFE4A5EF70D1C3D11447FE8A85A66
Magika zip
Reporter TomU
Tags:GuLoader zip

Intelligence

File Origin
# of uploads :
1
# of downloads :
31
Origin country :
CH CH
File Archive Information

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

File name:scan_0827.exe
File size:513'240 bytes
SHA256 hash: 54d1b412c756fa7c8ea26801ec08823a94603078a46b701b7ef5e4484d472fe0
MD5 hash: a90838a59c74be0f3f13fc4d1578b01d
MIME type:application/x-dosexec
Signature GuLoader
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/5c253107-9425-4ea5-a5b0-0072a355fc99/
Detection(s):
SecuriteInfo.com.Trojan.Inject6.4217.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.22739.ZipHeur.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a0e044e4159ce11f601e35c
Tags:
injection uloader virus
Result
Verdict:
Malicious
File Type:
PE File
Link:
https://app.docguard.net/65d12cbdcd5ccca79ee1ba3aeb99629232333a3551d40449e67b69d4ed383ad9/results/dashboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug evasive installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance signed
Link:
https://www.filescan.io/uploads/6a0df89d78f38c56ac73f7dd/reports/79855472-91e3-4ae6-8086-b3a6505d9a89/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/65d12cbdcd5ccca79ee1ba3aeb99629232333a3551d40449e67b69d4ed383ad9
Verdict:
Malicious
File Type:
zip
First seen:
2025-08-26T23:45:00Z UTC
Last seen:
2026-05-20T22:56:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/65d12cbdcd5ccca79ee1ba3aeb99629232333a3551d40449e67b69d4ed383ad9/results?tab=lookup
Score:
99%
Verdict:
Malware
File Type:
ARCHIVE
Link:
https://malprob.io/report/65d12cbdcd5ccca79ee1ba3aeb99629232333a3551d40449e67b69d4ed383ad9
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/65d12cbdcd5ccca79ee1ba3aeb99629232333a3551d40449e67b69d4ed383ad9/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2025-08-27 03:38:49 UTC
File Type:
Binary (Archive)
Extracted files:
8
AV detection:
29 of 38 (76.32%)
Threat level:
  5/5
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.52
Link:
https://yomi.yoroi.company/submissions/65d12cbdcd5ccca79ee1ba3aeb99629232333a3551d40449e67b69d4ed383ad9

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information

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

Malspam

GuLoader

zip 65d12cbdcd5ccca79ee1ba3aeb99629232333a3551d40449e67b69d4ed383ad9

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments