MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8cce07678037a7962fb05d5da9fb8cef36a31265e1800e96158ca77b68f1aa73. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8cce07678037a7962fb05d5da9fb8cef36a31265e1800e96158ca77b68f1aa73
SHA3-384 hash: a3c4086c4e4faa2dea5567fed38fa02ccd4608ace5fe8102b29ef65f5eecc8e1afcfbea41eaa8e5696e7c6f8a5fec002
SHA1 hash: 527f2c2275fa75886930aea6b9725421d9efe149
MD5 hash: 389a3a661fa02a8e3d2d9d1fae5a612e
humanhash: one-pennsylvania-bulldog-angel
File name:CopilotDrivers.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:4'628'321 bytes
First seen:2025-10-21 05:30:58 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 768:0kbXa/tGWNs4fVxcnbJkpDYZza+G9QYpzvXhLrUS+0emPfTWpelnzHJ7xXa0VxeB:vTajsSJB+GiErWpGVxXa03eKC6B9Wj
Threatray 198 similar samples on MalwareBazaar
TLSH T1A72612A9263C19E5D4FD3CBC4F3FF5187614044EDB0A8DA9B85A20EF0B272E47562636
Magika javascript
Reporter abuse_ch
Tags:js RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
99
Origin country :
SE SE
Vendor Threat Intelligence
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68f71ac63edd081eba4042a1
Tags:
obfuscate xtreme spawn
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm base64 evasive fingerprint obfuscated obfuscated powershell
Link:
https://www.filescan.io/uploads/68f71af411ff3db29f64f068/reports/69c475e5-f473-4f8c-81b7-459e3907a2e6/overview
Verdict:
Malicious
Labled as:
Trojan.Cryxos.JS
Link:
https://www.hybrid-analysis.com/sample/8cce07678037a7962fb05d5da9fb8cef36a31265e1800e96158ca77b68f1aa73
Verdict:
Malicious
File Type:
js
First seen:
2025-10-20T15:56:00Z UTC
Last seen:
2025-10-23T01:14:00Z UTC
Hits:
~10
Detections:
Trojan.Agentb.TCP.C&C Trojan.JS.SAgent.sb HEUR:Trojan.Script.Generic
Link:
https://opentip.kaspersky.com/8cce07678037a7962fb05d5da9fb8cef36a31265e1800e96158ca77b68f1aa73/results?tab=lookup
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1798849
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 file contains suspicious strings
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
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 download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1798849 Sample: CopilotDrivers.js Startdate: 21/10/2025 Architecture: WINDOWS Score: 100 23 hostphpwindowsdriversapps1.duckdns.org 2->23 25 systemcopilotdriver.ydns.eu 2->25 27 2 other IPs or domains 2->27 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 51 13 other signatures 2->51 8 wscript.exe 1 2->8         started        signatures3 49 Uses dynamic DNS services 23->49 process4 signatures5 53 Suspicious powershell command line found 8->53 55 Wscript starts Powershell (via cmd or directly) 8->55 57 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->57 59 2 other signatures 8->59 11 powershell.exe 14 15 8->11         started        process6 dnsIp7 29 systemcopilotdriver.ydns.eu 181.206.158.190, 3001, 49724, 49725 ColombiaMovilCO Colombia 11->29 31 archive.org 207.241.224.2, 49721, 80 INTERNET-ARCHIVEUS United States 11->31 33 dn721709.ca.archive.org 204.62.247.49, 443, 49722, 49723 COGENT-174US United States 11->33 61 Found Tor onion address 11->61 63 Writes to foreign memory regions 11->63 65 Injects a PE file into a foreign processes 11->65 15 MSBuild.exe 4 2 11->15         started        19 conhost.exe 11->19         started        signatures8 process9 file10 21 C:\ProgramData\remcos\registros.dat, data 15->21 dropped 35 Contains functionality to bypass UAC (CMSTPLUA) 15->35 37 Detected Remcos RAT 15->37 39 Contains functionalty to change the wallpaper 15->39 41 4 other signatures 15->41 signatures11
Score:
21%
Verdict:
Benign
File Type:
SCRIPT
Link:
https://malprob.io/report/8cce07678037a7962fb05d5da9fb8cef36a31265e1800e96158ca77b68f1aa73
Verdict:
inconclusive
YARA:
2 match(es)
Tags:
PowerShell
Link:
https://app.malva.re/file/389a3a661fa02a8e3d2d9d1fae5a612e
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8cce07678037a7962fb05d5da9fb8cef36a31265e1800e96158ca77b68f1aa73/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/8cce07678037a7962fb05d5da9fb8cef36a31265e1800e96158ca77b68f1aa73
Threat name:
Script-JS.Trojan.Cryxos
Create hunting rule
Status:
Malicious
First seen:
2025-10-21 05:33:31 UTC
File Type:
Binary
AV detection:
4 of 24 (16.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rthaoz4ag6tzml5qlvo2t64m543kgetf4gaa5fqvrstxw2hrvjzq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
01ee90a2b1295348dc4495943a09cdaa2941a30476c5f7a3054f905f106068a0
RemcosRAT
0f68e13bb3df52b8ce6e5c7e4bc65ea0f307514c4aa4eafa3820321be02fe121
RemcosRAT
32854f6bd0f40b5de1e8ed8e456508d1db5a9b44293f3f20420f1e1919e794ec
RemcosRAT
5e28547345b1ded1040b2fefc75d0b633a4c8ef0dce4f9e76d9d22238832063e
RemcosRAT
a0859807bb884d0b33c06c5e5aa7f9576eff56918117f414274e39f8fa67ff98
RemcosRAT
b6e3aeb15652420e1cb2168e8bed1e51b0bd5cb72e484fbb1aed6354d6ee3ee2
RemcosRAT
e806663d79595083316260b4c29b00c503570f2a7b7a26250f64d6ff36590bd5
RemcosRAT
ecadbf33cbf7f7fdbc0021820c72850288f3a4b7bb411d76885f89aa1a3612b3
RemcosRAT
error
RemcosRAT
+ 188 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos discovery execution rat
Link:
https://tria.ge/reports/251021-f8d9sa1pgj/
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
Dropper Extraction:
http://archive.org/download/optimized_msi_20251017_2027/optimized_MSI.png
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/8cce07678037a7962fb05d5da9fb8cef36a31265e1800e96158ca77b68f1aa73

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:Any_SU_Domain
Create hunting rule
Author:you
Description:Detect any reference to .su domains or subdomains
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)

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 8cce07678037a7962fb05d5da9fb8cef36a31265e1800e96158ca77b68f1aa73

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3597686/
  
Delivery method
Distributed via web download

Comments