MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3a6aba87f57238e56443e395c15d59c6608e1c4e7d05152825151f4b6ef4c529. 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: 3a6aba87f57238e56443e395c15d59c6608e1c4e7d05152825151f4b6ef4c529
SHA3-384 hash: 071b173149641abd15899801c5cf36d76d66ed4b3e36d45a0fab64bd686177e5a0ab14f61f65128a4e78ec3c4bd63f2f
SHA1 hash: 93effc1950efd2554b594955b7df9745bf2f16e5
MD5 hash: 90db8a5f2e26fad6434ae7b973d75561
humanhash: earth-gee-wolfram-batman
File name:CopilotDrivers.js
Download: download sample
Signature RemcosRAT
File size:4'578'082 bytes
First seen:2026-01-09 17:04:00 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 768:BLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLJ:P
Threatray 1'367 similar samples on MalwareBazaar
TLSH T19626DA89C9EC20E498AF00A99EC40C01D55F805B27966C76FDC275F76F989F130ABA7D
Magika javascript
Reporter abuse_ch
Tags:js RemcosRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
127
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:
2026-01-09T14:12:00Z UTC
Last seen:
2026-01-10T12:48:00Z UTC
Hits:
~100
Detections:
Trojan.JS.SAgent.sb HEUR:Trojan.Script.SAgent.gen HEUR:Trojan.Script.Generic
Result
Threat name:
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Creates processes via WMI
Detected Remcos RAT
Found malware configuration
Found Tor onion address
Injects a PE file into a foreign processes
Installs a global keyboard hook
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)
Multi AV Scanner detection for submitted file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded Reflective Assembly Load
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Unusual module load detection (module proxying)
Uses dynamic DNS services
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 Powershell decode and execute
Yara detected Powershell download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1847462 Sample: CopilotDrivers.js Startdate: 09/01/2026 Architecture: WINDOWS Score: 100 27 hostphpwindowsdriversappssi.duckdns.org 2->27 29 systemcopilotdriver.ydns.eu 2->29 31 6 other IPs or domains 2->31 39 Suricata IDS alerts for network traffic 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 47 15 other signatures 2->47 8 wscript.exe 1 2->8         started        signatures3 45 Uses dynamic DNS services 27->45 process4 signatures5 49 Suspicious powershell command line found 8->49 51 Wscript starts Powershell (via cmd or directly) 8->51 53 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->53 55 2 other signatures 8->55 11 powershell.exe 14 15 8->11         started        process6 dnsIp7 33 archive.org 207.241.224.2, 443, 49691 INTERNET-ARCHIVEUS United States 11->33 35 ia801703.us.archive.org 207.241.233.33, 443, 49693 INTERNET-ARCHIVEUS United States 11->35 37 systemcopilotdriver.ydns.eu 181.206.158.190, 3001, 49694, 49695 ColombiaMovilCO Colombia 11->37 57 Found Tor onion address 11->57 59 Writes to foreign memory regions 11->59 61 Injects a PE file into a foreign processes 11->61 15 MSBuild.exe 11->15         started        18 MSBuild.exe 4 2 11->18         started        21 conhost.exe 11->21         started        23 MSBuild.exe 11->23         started        signatures8 process9 file10 63 Contains functionality to bypass UAC (CMSTPLUA) 15->63 65 Contains functionalty to change the wallpaper 15->65 67 Contains functionality to steal Chrome passwords or cookies 15->67 73 3 other signatures 15->73 25 C:\ProgramData\remcos\registros.dat, data 18->25 dropped 69 Detected Remcos RAT 18->69 71 Installs a global keyboard hook 18->71 signatures11
Verdict:
inconclusive
YARA:
1 match(es)
Threat name:
Script-JS.Trojan.Generic
Status:
Suspicious
First seen:
2026-01-08 20:00:00 UTC
File Type:
Binary
AV detection:
8 of 24 (33.33%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos defense_evasion discovery execution rat trojan
Behaviour
Modifies registry class
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
Drops file in Windows directory
Suspicious use of SetThreadContext
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Process spawned unexpected child process
Remcos
Remcos family
UAC bypass
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 3a6aba87f57238e56443e395c15d59c6608e1c4e7d05152825151f4b6ef4c529

(this sample)

  
Delivery method
Distributed via web download

Comments