MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dacfee8b1805f6536369bf401c7104946429f2e68c4e7143b60d9153b23c7c76. 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: 13


Intelligence 13 IOCs YARA File information Comments

SHA256 hash: dacfee8b1805f6536369bf401c7104946429f2e68c4e7143b60d9153b23c7c76
SHA3-384 hash: ac74c22205abc6a8b3f825e936c92aa3e9bb4dbe0dea5c09ec1880badb6eac198a95412c2fc32894ac65284b99532f6d
SHA1 hash: 9f223a5a786f3ccc85fdf87fab3d264f4ef7c0bc
MD5 hash: 9cb517ee4cc27bcc46712339b0308cad
humanhash: six-arizona-oven-yellow
File name:CopilotDrivers.js
Download: download sample
Signature RemcosRAT
File size:56'327 bytes
First seen:2025-08-25 06:42:44 UTC
Last seen:2025-08-25 06:44:15 UTC
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 96:9XSTrTaxtJw8eYbqnvV11XeRX6FRV0kQoW6H+ZQicXx8yKn4xFCVrT65R+jA5p7f:9k06H+/wfxFCQ+jS+/K7cwNfAo9
Threatray 1'385 similar samples on MalwareBazaar
TLSH T177438EC29D331BC30966678A553FFC3CDC8533599678EA6E706DA240593D1BAC34E0AE
Magika javascript
Reporter abuse_ch
Tags:js RemcosRAT

Intelligence


File Origin
# of uploads :
2
# of downloads :
73
Origin country :
SE SE
Vendor Threat Intelligence
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm obfuscated powershell
Verdict:
Malicious
File Type:
js
First seen:
2025-08-24T20:24:00Z UTC
Last seen:
2025-08-24T20:24:00Z UTC
Hits:
~10
Result
Threat name:
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to register a low level keyboard hook
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: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line 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 Generic Downloader
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: 1764259 Sample: CopilotDrivers.js Startdate: 25/08/2025 Architecture: WINDOWS Score: 100 27 systemcopilotdriver.ydns.eu 2->27 29 ia601009.us.archive.org 2->29 31 3 other IPs or domains 2->31 43 Suricata IDS alerts for network traffic 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 12 other signatures 2->49 8 wscript.exe 1 2->8         started        11 svchost.exe 1 1 2->11         started        signatures3 process4 dnsIp5 59 Suspicious powershell command line found 8->59 61 Wscript starts Powershell (via cmd or directly) 8->61 63 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->63 65 2 other signatures 8->65 14 powershell.exe 14 15 8->14         started        35 127.0.0.1 unknown unknown 11->35 signatures6 process7 dnsIp8 37 archive.org 207.241.224.2, 443, 49683 INTERNET-ARCHIVEUS United States 14->37 39 ia601009.us.archive.org 207.241.227.39, 443, 49684 INTERNET-ARCHIVEUS United States 14->39 41 cdn.discordapp.com 162.159.133.233, 443, 49685 CLOUDFLARENETUS United States 14->41 67 Found Tor onion address 14->67 69 Writes to foreign memory regions 14->69 71 Injects a PE file into a foreign processes 14->71 18 MSBuild.exe 4 2 14->18         started        23 conhost.exe 14->23         started        signatures9 process10 dnsIp11 33 systemcopilotdriver.ydns.eu 181.206.158.190, 3001, 49686, 49691 ColombiaMovilCO Colombia 18->33 25 C:\ProgramData\remcos\registros.dat, data 18->25 dropped 51 Contains functionality to bypass UAC (CMSTPLUA) 18->51 53 Detected Remcos RAT 18->53 55 Contains functionalty to change the wallpaper 18->55 57 2 other signatures 18->57 file12 signatures13
Gathering data
Threat name:
Script-JS.Trojan.PureLogsStealer
Status:
Malicious
First seen:
2025-08-25 01:00:09 UTC
File Type:
Binary
AV detection:
10 of 24 (41.67%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos defense_evasion 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
Modifies trusted root certificate store through registry
Process spawned unexpected child process
Remcos
Remcos family
Malware Config
C2 Extraction:
systemcopilotdriver.ydns.eu:3001
Dropper Extraction:
https://archive.org/download/optimized_msi_20250821/optimized_MSI.png
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 dacfee8b1805f6536369bf401c7104946429f2e68c4e7143b60d9153b23c7c76

(this sample)

  
Delivery method
Distributed via web download

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