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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1f59d535e54976cbbeae5f32e908a4e08590723e749a84ee9c8717708c55ea39. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1f59d535e54976cbbeae5f32e908a4e08590723e749a84ee9c8717708c55ea39
SHA3-384 hash: 133e6704f4dd0d69a7e898601d1f7f2fdb39f3c27b98cfcdc853bc1c55cf08ad5917f9c44a15a002580e9d63aec0b0fc
SHA1 hash: c2e2dbf7e9729872a56aa0331fb7342cc48e953c
MD5 hash: eee71392804437e3261e05dd1dfc225c
humanhash: quiet-table-texas-lamp
File name:MV_Sunshine.rar
Download: download sample
Signature GuLoader
Create hunting rule
File size:9'788 bytes
First seen:2026-10-14 15:21:27 UTC
Last seen:2026-10-14 15:24:59 UTC
File type: rar
MIME type:application/vnd.rar
ssdeep 192:AN7al9Nqnox+YeIp3V6XW7SfB/hgp/iB3EssxKtS9KXLzFlDRkq:Axal9f+YR3olhs/iKsgKsoLzjF
TLSH T16612C06724263338B6C1DE0E55526207B18071F9A2167ED9DB850C496A747877B3CEC6
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Magika rar
Reporter TomU
Tags:GuLoader rar

Intelligence

File Origin
# of uploads :
2
# of downloads :
62
Origin country :
CH CH
File Archive Information

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

File name:MV Sunshine.vbs
File size:17'887 bytes
SHA256 hash: b3f9c69a9f7fa2bbf04a7e035a85e6540e224ea39668bec8ea38852d97b529d4
MD5 hash: 1df0b0d95f92f374976144616bae20a6
MIME type:text/plain
Signature GuLoader
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/a3b5c9d8-025b-4e12-8fcb-40bdb4def901/
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ad14f9df4e17c78f715fa18
Tags:
virus shell sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cloudeye cmd encrypted lolbin
Link:
https://www.filescan.io/uploads/6acf9e3b3467caad9948b652/reports/f6cd5613-4cc8-4ef3-acfc-8e7660cbf96b/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/1f59d535e54976cbbeae5f32e908a4e08590723e749a84ee9c8717708c55ea39
Verdict:
Malicious
File Type:
rar
First seen:
2026-09-24T19:29:00Z UTC
Last seen:
2026-10-16T11:49:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/1f59d535e54976cbbeae5f32e908a4e08590723e749a84ee9c8717708c55ea39/results?tab=lookup
Verdict:
Malware
YARA:
1 match(es)
Tags:
COM Behavior Trace DeObfuscated Obfuscated Rar Archive SOS: 0.36 T1027 T1059.005 VBScript WScript.Shell
Link:
https://app.malva.re/file/eee71392804437e3261e05dd1dfc225c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1f59d535e54976cbbeae5f32e908a4e08590723e749a84ee9c8717708c55ea39/
Threat name:
Script-WScript.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2026-09-25 01:29:31 UTC
File Type:
Binary (Archive)
Extracted files:
1
AV detection:
13 of 38 (34.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=d5m5knpfjf3mxpvol4zoscfe4ccza4r6osnij3u4q4lxbdcv5i4q._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
defense_evasion discovery execution
Link:
https://tria.ge/reports/261014-s31baaxva1/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Executes a command shell one-liner
Reads the TCP/IP host and domain name from the registry
System Location Discovery: System Language Discovery
Executes a VBScript file via the Windows Script Host.
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Checks QEMU agent file
Checks computer location settings
Badlisted process makes network request
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/1f59d535e54976cbbeae5f32e908a4e08590723e749a84ee9c8717708c55ea39

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_tiny_vbs
Create hunting rule
Author:daniyyell
Description:Detects tiny VBS delivery technique
Rule name:Guloader_VBScript
Create hunting rule
Author:Ankit Anubhav - ankitanubhav.info
Description:Detects GuLoader/CloudEye VBScripts

File information

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

Malspam

GuLoader

rar 1f59d535e54976cbbeae5f32e908a4e08590723e749a84ee9c8717708c55ea39

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments