MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c9a4804652bdb057378516f59d8f2c49f0fab84ed875bfa50ef816bccf91153c. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c9a4804652bdb057378516f59d8f2c49f0fab84ed875bfa50ef816bccf91153c
SHA3-384 hash: 6cc7f0d20ceb700c7fab8c3f5234a2279fbd7476870750458459d3c011d509ecb159ab0360871c9fb1133b6741056a76
SHA1 hash: e6eb973207f77a533bf1f025ce52faee8aedcb1f
MD5 hash: 1a5368add57017560fcba4f861f726dd
humanhash: oklahoma-chicken-football-comet
File name:RPF1910485_20260804.js
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'174'536 bytes
First seen:2026-08-05 08:06:58 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 24576:zrkfGp6JK/6JjrafWFR0rDJhIXta+gCfL2YDhr:nkfGp6JK/6JjrafWFR0rDJhIXta+gCfd
TLSH T12A454A20DD2406694E1B17ADFCA60B62CEBC861D522794F5F6DE030D62064FCE3BE66D
Magika javascript
Reporter abuse_ch
Tags:GuLoader js

Intelligence

File Origin
# of uploads :
1
# of downloads :
151
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.26863.JsHeur.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.26444.JsHeur.UNOFFICIAL
Create hunting rule

Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
evasive lolbin obfuscated repaired wab
Link:
https://www.filescan.io/uploads/6a72ef5b7016346340550a90/reports/293aebc5-bd4c-40c1-8e89-86dd2632208f/overview
Verdict:
Malicious
Link:
https://www.hybrid-analysis.com/sample/c9a4804652bdb057378516f59d8f2c49f0fab84ed875bfa50ef816bccf91153c
Verdict:
Malicious
File Type:
text
First seen:
2026-08-05T00:06:00Z UTC
Last seen:
2026-08-07T06:32:00Z UTC
Hits:
~10000
Detections:
Trojan.PowerShell.Strion.sb Trojan.VBS.SAgent.sb Trojan.JS.SAgent.sb HEUR:Trojan.Script.SAgent.gen HEUR:Trojan.Script.Generic
Link:
https://opentip.kaspersky.com/c9a4804652bdb057378516f59d8f2c49f0fab84ed875bfa50ef816bccf91153c/results?tab=lookup
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1952511
Signature
Found suspicious powershell code related to unpacking or dynamic code loading
Injects code into the Windows Explorer (explorer.exe)
Joe Sandbox ML detected suspicious sample
JScript performs obfuscated calls to suspicious functions
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Obfuscated command line found
Sigma detected: WScript or CScript Dropper
Switches to a custom stack to bypass stack traces
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
WScript reads language and country specific registry keys (likely country aware script)
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1952511 Sample: RPF1910485_20260804.js Startdate: 05/08/2026 Architecture: WINDOWS Score: 100 30 lenotecadiarqua.it 2->30 34 Malicious sample detected (through community Yara rule) 2->34 36 Multi AV Scanner detection for submitted file 2->36 38 Yara detected GuLoader 2->38 40 3 other signatures 2->40 7 wscript.exe 1 2 2->7         started        11 powershell.exe 16 2->11         started        13 powershell.exe 17 2->13         started        16 2 other processes 2->16 signatures3 process4 dnsIp5 28 C:\Users\user\AppData\Local\Initiativ, ASCII 7->28 dropped 42 JScript performs obfuscated calls to suspicious functions 7->42 44 Injects code into the Windows Explorer (explorer.exe) 7->44 46 Windows Scripting host queries suspicious COM object (likely to drop second stage) 7->46 48 WScript reads language and country specific registry keys (likely country aware script) 7->48 18 explorer.exe 7->18         started        50 Writes to foreign memory regions 11->50 52 Found suspicious powershell code related to unpacking or dynamic code loading 11->52 54 Switches to a custom stack to bypass stack traces 11->54 20 wab.exe 3 1 11->20         started        22 conhost.exe 11->22         started        24 wab.exe 11->24         started        32 lenotecadiarqua.it 86.107.32.99, 443, 49717 SERVERPLAN-ASIT Italy 13->32 26 conhost.exe 13->26         started        file6 signatures7 process8
Score:
88%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/c9a4804652bdb057378516f59d8f2c49f0fab84ed875bfa50ef816bccf91153c
Verdict:
inconclusive
YARA:
2 match(es)
Link:
https://app.malva.re/file/1a5368add57017560fcba4f861f726dd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c9a4804652bdb057378516f59d8f2c49f0fab84ed875bfa50ef816bccf91153c/
Threat name:
Win32.Trojan.Vigorf
Create hunting rule
Status:
Malicious
First seen:
2026-08-05 02:59:05 UTC
File Type:
Text
AV detection:
9 of 38 (23.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zgsiarssxwyfon4fc32z3dzmjhypvoco3b237jio7allzt4rcu6a._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
adware execution spyware
Link:
https://tria.ge/reports/260805-j1b18sx1bt/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Drops desktop.ini file(s)
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:
0.85
Link:
https://yomi.yoroi.company/submissions/c9a4804652bdb057378516f59d8f2c49f0fab84ed875bfa50ef816bccf91153c

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:dependsonpythonailib
Create hunting rule
Author:Tim Brown
Description:Hunts for dependencies on Python AI libraries
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:telebot_framework
Create hunting rule
Author:vietdx.mb

File information

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

Comments