MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6b3897c1830e668a62a95d9cfc8f335d1acce31da25022b4e2e53ca5926c974b. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6b3897c1830e668a62a95d9cfc8f335d1acce31da25022b4e2e53ca5926c974b
SHA3-384 hash: 4afb3a0ed1b3f3fa991fec38d616ca453b5d2a90e858ce75c1923e7db740cd57f859ad2e35bd616dc64d7fb884ea2416
SHA1 hash: 7d233406ddd7d8811eb299be2d73cb0b6a77b216
MD5 hash: 2dd0ef9f1335f9634c89ad1d57760272
humanhash: indigo-blossom-four-romeo
File name:CopilotDrivers.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'255'183 bytes
First seen:2025-08-27 07:48:57 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 384:g423wzgYkhGRhsihbbGgTYjqiEV5NUizwQfUBu9amDGvs71zaaVCtqf8Z/6jOS/V:gvTM
TLSH T15845AB639F347705C8452C3BC35A66B3B7C09B2B60AFF69A7E973219A43C706C499742
Magika javascript
Reporter abuse_ch
Tags:js RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
77
Origin country :
SE SE
Vendor Threat Intelligence
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68aeb88d3e988eb6ab82ca42
Tags:
obfuscate xtreme spawn
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm obfuscated powershell
Link:
https://www.filescan.io/uploads/68aeb91239a6221faa706e5e/reports/98ac9dad-d868-4e2c-a039-b40d8c12ef9e/overview
Verdict:
Suspicious
Labled as:
Generik.DNDQNIR trojan
Link:
https://www.hybrid-analysis.com/sample/6b3897c1830e668a62a95d9cfc8f335d1acce31da25022b4e2e53ca5926c974b
Verdict:
Malicious
File Type:
js
First seen:
2025-08-27T04:45:00Z UTC
Last seen:
2025-08-27T04:45:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/6b3897c1830e668a62a95d9cfc8f335d1acce31da25022b4e2e53ca5926c974b/results?tab=lookup
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1766010
Signature
Creates processes via WMI
Found Tor onion address
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: 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 Powershell download and execute
Behaviour
Behavior Graph:
Download SVG
Score:
95%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/6b3897c1830e668a62a95d9cfc8f335d1acce31da25022b4e2e53ca5926c974b
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6b3897c1830e668a62a95d9cfc8f335d1acce31da25022b4e2e53ca5926c974b/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/6b3897c1830e668a62a95d9cfc8f335d1acce31da25022b4e2e53ca5926c974b
Threat name:
Script-JS.Spyware.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2025-08-27 01:16:02 UTC
File Type:
Text (JavaScript)
AV detection:
12 of 38 (31.58%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nm4jpqmdbztiuyvjlwopzdztlunmzyy5ujicfnhc4u6kletms5fq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos defense_evasion discovery execution rat
Link:
https://tria.ge/reports/250827-jpxhssxpv5/
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.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/6b3897c1830e668a62a95d9cfc8f335d1acce31da25022b4e2e53ca5926c974b

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: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 6b3897c1830e668a62a95d9cfc8f335d1acce31da25022b4e2e53ca5926c974b

(this sample)

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

Comments