MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a2c4e8fbfd02dbb470d69cf011c2c9c48c942d7796eb7bc9f3c99268ec1c7ee9. 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: 11
| SHA256 hash: | a2c4e8fbfd02dbb470d69cf011c2c9c48c942d7796eb7bc9f3c99268ec1c7ee9 |
|---|---|
| SHA3-384 hash: | 52adad7f3528eba0269f190ea0dbb8fe4bf4a32589090a370d1bc6192fa1be8f3e107008feeb830f003f5ecae70ba76c |
| SHA1 hash: | 9f7d9054fa7e12ed31c2da0afd51c82eefeeba26 |
| MD5 hash: | 8efd4450e8f8d4349208631bffe81eef |
| humanhash: | uncle-berlin-mississippi-oregon |
| File name: | CopilotDrivers.js |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 2'360'973 bytes |
| First seen: | 2025-10-02 06:16:06 UTC |
| Last seen: | Never |
| File type: |  js |
| MIME type: | text/plain |
| ssdeep | 384:+rWZ3WYH5VigDfcijUv5rWZ3WYH5VigDfcijErWZ3WYH5VigDfcijw:HJWEswdJWEswZJWEswM |
| Threatray | 222 similar samples on MalwareBazaar |
| TLSH | T188B50B63DB433BA81E905CE2338D74E6F19D4BB7328EB6F6767241A9B03D80185E161D |
| Magika | txt |
| Reporter |  abuse_ch |
| Tags: | js RemcosRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
86
Origin country :
SEVendor Threat Intelligence
Detection(s):
Verdict:
Malicious
Score:
97.4%
Tags:
obfuscate xtreme spawn
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-vm base64 evasive fingerprint obfuscated obfuscated powershell
Verdict:
Malicious
File Type:
js
First seen:
2025-10-01T16:11:00Z UTC
Last seen:
2025-10-02T10:08:00Z UTC
Hits:
~10
Detections:
Trojan.JS.SAgent.sb HEUR:Trojan.Script.SAgent.gen
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
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:
Score:
90%
Verdict:
Malware
File Type:
SCRIPT
Gathering data
Verdict:
Malicious
Threat:
Trojan.JS.SAgent
Threat name:
Win32.Trojan.Generic
Status:
Suspicious
First seen:
2025-10-02 05:31:58 UTC
File Type:
Text (JavaScript)
AV detection:
6 of 38 (15.79%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
katzstealer
Similar samples:
+ 212 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
10/10
Tags:
execution
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Command and Scripting Interpreter: JavaScript
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Process spawned unexpected child process
Malware Config
Dropper Extraction:
https://archive.org/download/optimized_msi_20250917/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
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 |
|---|---|
| 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
Delivery method
Distributed via web download
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