MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 542564465052b807c5f7bead9b942bdef1894ac1f56623533588c2488422303c. 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: 12


Intelligence 12 IOCs YARA 5 File information Comments
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SHA256 hash: 542564465052b807c5f7bead9b942bdef1894ac1f56623533588c2488422303c
SHA3-384 hash: 7be32a4bc89cb04b1f8e51e1194bb75b87464cbf088d0ed41f80041c9b031871df7b0d73165d956eea30a35cae2aab2e
SHA1 hash: b5070f5cb3c5798c59d6c1c7dd4ffd4ce6ec3bb1
MD5 hash: db7110b644af71b87a013ffcbb2e274c
humanhash: video-tennessee-bacon-nitrogen
File name:615-61360132_H193254·pdf.js
Download: download sample
Signature GuLoader
Create hunting rule
File size:99'780 bytes
First seen:2025-09-12 07:44:05 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 3072:Jn2IrdmJvYEf+WOK/wqlDoFMd3FZDLunfB0uz9+jwd8z+:J2IwJAi7oqlDTd3FZDK2uzRA+
Threatray 1'066 similar samples on MalwareBazaar
TLSH T172A36A70CA2112774F47BB98BCB45661C6BD8329862744B0F6D9870D900ECECF3BD66A
Magika javascript
Reporter abuse_ch
Tags:GuLoader js

Intelligence

File Origin
# of uploads :
1
# of downloads :
137
Origin country :
SE SE
Vendor Threat Intelligence
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68c3cf676e66ba602d7ad7de
Tags:
virus spawn shell
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm fingerprint
Link:
https://www.filescan.io/uploads/68c3cfdd732879482927c1b8/reports/ef05c985-11a0-4e6a-ba4e-c21fb8c2baec/overview
Verdict:
Malicious
Labled as:
JS/Kryptik.CXG trojan
Link:
https://www.hybrid-analysis.com/sample/542564465052b807c5f7bead9b942bdef1894ac1f56623533588c2488422303c
Verdict:
Malicious
File Type:
js
First seen:
2025-09-11T20:00:00Z UTC
Last seen:
2025-09-11T20:00:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/542564465052b807c5f7bead9b942bdef1894ac1f56623533588c2488422303c/results?tab=lookup
Result
Threat name:
Remcos, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1776237
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates processes via WMI
Detected Remcos RAT
Early bird code injection technique detected
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Hides threads from debuggers
JavaScript source code contains functionality to generate code involving a shell, file or stream
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Obfuscated command line found
Queues an APC in another process (thread injection)
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected GuLoader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1776237 Sample: 615-61360132_H193254#U00b7pdf.js Startdate: 12/09/2025 Architecture: WINDOWS Score: 100 36 drive.usercontent.google.com 2->36 38 drive.google.com 2->38 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus detection for URL or domain 2->52 54 6 other signatures 2->54 9 powershell.exe 43 2->9         started        12 wscript.exe 1 1 2->12         started        14 svchost.exe 1 1 2->14         started        17 msiexec.exe 2->17         started        signatures3 process4 dnsIp5 66 Early bird code injection technique detected 9->66 68 Writes to foreign memory regions 9->68 70 Found suspicious powershell code related to unpacking or dynamic code loading 9->70 80 2 other signatures 9->80 19 msiexec.exe 2 7 9->19         started        23 conhost.exe 9->23         started        72 Wscript starts Powershell (via cmd or directly) 12->72 74 Windows Scripting host queries suspicious COM object (likely to drop second stage) 12->74 76 Suspicious execution chain found 12->76 78 Creates processes via WMI 12->78 25 powershell.exe 14 43 12->25         started        46 127.0.0.1 unknown unknown 14->46 signatures6 process7 dnsIp8 40 142.250.72.161, 443, 49695 GOOGLEUS United States 19->40 56 Detected Remcos RAT 19->56 58 Obfuscated command line found 19->58 60 Hides threads from debuggers 19->60 27 cmd.exe 1 19->27         started        42 drive.google.com 142.250.176.14, 443, 49683, 49694 GOOGLEUS United States 25->42 44 drive.usercontent.google.com 142.250.217.129, 443, 49684 GOOGLEUS United States 25->44 62 Found suspicious powershell code related to unpacking or dynamic code loading 25->62 64 Loading BitLocker PowerShell Module 25->64 30 conhost.exe 25->30         started        signatures9 process10 signatures11 82 Obfuscated command line found 27->82 32 conhost.exe 27->32         started        34 reg.exe 1 1 27->34         started        process12
Score:
98%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/542564465052b807c5f7bead9b942bdef1894ac1f56623533588c2488422303c
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/542564465052b807c5f7bead9b942bdef1894ac1f56623533588c2488422303c/
Threat name:
Script-JS.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2025-09-12 00:07:52 UTC
File Type:
Text (JavaScript)
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kqswirsqkk4aprpxx2wzxfbl33yysswb6vtcguzvrdberbbcga6a._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
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5e9608025e253bd0ab486f0428d71d998fb53eba50c4ca87f70c33518d96c6bc
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90b230c7b8c4991a8f657bc8031157a9070c24eb3de9cd074241985dc99489c0
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b87a083343939a8260bb395af58b09dd699f8a4525aa8f6786210c3b1c691653
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ca8cf8aa0bab28b391de182e61cf7f9e8f8464717ab971384b73db628aef7267
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cbc366eb88520c2f1a9c0db8a7f5318b4f8a9a0993352a31d877c63e8abc8d0c
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e2140c6390f7696be2a70de9072137210c6ec238e5586fce237917a2082bbdd9
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e7f7a21ee9aaf1f982d222aa7637f8f32c88c44e0b24d9a470fe5ccc47ee55fe
GuLoader
error
GuLoader
+ 1'056 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos defense_evasion discovery execution persistence rat trojan
Link:
https://tria.ge/reports/250912-jl9nysbp3x/
Behaviour
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Badlisted process makes network request
Process spawned unexpected child process
Remcos
Remcos family
UAC bypass
Malware Config
C2 Extraction:
egi0of8.duckdns.org:36281
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/542564465052b807c5f7bead9b942bdef1894ac1f56623533588c2488422303c

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: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:Warp
Create hunting rule
Author:Seth Hardy
Description:Warp
Rule name:WarpStrings
Create hunting rule
Author:Seth Hardy
Description:Warp Identifying Strings

File information

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

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