MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3204af9817beaecaa95bb0b0d8b0e21232650503a4543009d6fb57a73afdc603. 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



RemcosRAT


Vendor detections: 12


Intelligence 12 IOCs YARA File information Comments

SHA256 hash: 3204af9817beaecaa95bb0b0d8b0e21232650503a4543009d6fb57a73afdc603
SHA3-384 hash: ce9b7ac64dd6a407278461a9844369c56eee67d86c1a387277aaa0bbc0bc3114a7dce6b885ea6c9a624139a724e15308
SHA1 hash: edf77438cc02011495d724c2ea0f3c23b82afbeb
MD5 hash: 7a14a094ec07b734df3119b47e9521fe
humanhash: social-jig-neptune-three
File name:CopilotDrivers.js
Download: download sample
Signature RemcosRAT
File size:4'703'630 bytes
First seen:2025-12-23 17:15:24 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 384:xFQSyvQDrd6F4KzqEcWxdL3tAtkmAtKebCrqaZzC7NiG3d7S256B/zHV/hGJqaq/:t
TLSH T1372612BDBB183C16FFB1C273964C81C4503A527D09074827796AA9A6DFB2DA00E75FB4
Magika javascript
Reporter abuse_ch
Tags:js RemcosRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
119
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
94.9%
Tags:
obfuscate xtreme shell
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm base64 base64 fingerprint obfuscated obfuscated overlay powershell repaired
Verdict:
Malicious
File Type:
js
First seen:
2025-12-22T12:44:00Z UTC
Last seen:
2025-12-22T13:07:00Z UTC
Hits:
~10
Detections:
Trojan.JS.SAgent.sb HEUR:Trojan.Script.SAgent.gen HEUR:Trojan.Script.Generic
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Creates processes via WMI
Found Tor onion address
JavaScript source code contains functionality to generate code involving a shell, file or stream
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded Reflective Assembly Load
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
Yara detected Generic Downloader
Yara detected MSILDownloaderGeneric
Yara detected Powershell decode and execute
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1838344 Sample: CopilotDrivers.js Startdate: 23/12/2025 Architecture: WINDOWS Score: 100 20 ia801600.us.archive.org 2->20 22 archive.org 2->22 30 Malicious sample detected (through community Yara rule) 2->30 32 Yara detected Powershell download and execute 2->32 34 Yara detected Powershell decode and execute 2->34 36 9 other signatures 2->36 8 wscript.exe 1 2->8         started        11 svchost.exe 1 1 2->11         started        signatures3 process4 dnsIp5 38 Suspicious powershell command line found 8->38 40 Wscript starts Powershell (via cmd or directly) 8->40 42 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->42 44 2 other signatures 8->44 14 powershell.exe 14 15 8->14         started        24 127.0.0.1 unknown unknown 11->24 signatures6 process7 dnsIp8 26 archive.org 207.241.224.2, 49686, 80 INTERNET-ARCHIVEUS United States 14->26 28 ia801600.us.archive.org 207.241.228.120, 49687, 80 INTERNET-ARCHIVEUS United States 14->28 46 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 14->46 48 Found Tor onion address 14->48 50 Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines) 14->50 52 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 14->52 18 conhost.exe 14->18         started        signatures9 process10
Verdict:
inconclusive
YARA:
1 match(es)
Threat name:
Script-JS.Trojan.Generic
Status:
Suspicious
First seen:
2025-12-23 15:59:47 UTC
File Type:
Binary
AV detection:
8 of 24 (33.33%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos discovery execution rat
Behaviour
Suspicious behavior: EnumeratesProcesses
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 SetThreadContext
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Process spawned unexpected child process
Remcos
Remcos family
Malware Config
C2 Extraction:
systemcopilotdriver.ydns.eu:3001
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Web download

RemcosRAT

Java Script (JS) js 3204af9817beaecaa95bb0b0d8b0e21232650503a4543009d6fb57a73afdc603

(this sample)

  
Delivery method
Distributed via web download

Comments