MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d84b28f6ce7bca728fdf5eea7ed6cc3d6bed66d189c9218484d62fda4d5a4c9c. 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: 9


Intelligence 9 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d84b28f6ce7bca728fdf5eea7ed6cc3d6bed66d189c9218484d62fda4d5a4c9c
SHA3-384 hash: 4f0a6f92e7a2bbd708f920b6da0252be2227bc61de96ca5dd5c1efdfc55faf188df0cb9fa926bc9a39404c1a4ca3c0ad
SHA1 hash: d1f708e28e12deed2757243bc9b279c50ad836f1
MD5 hash: a3ce6b0cb91686942f1692c898983ee3
humanhash: equal-rugby-steak-hydrogen
File name:CopilotDrivers.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'167'264 bytes
First seen:2025-09-02 06:12:28 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 1536:F90/MJp7RhHTzNZwUrjIa3VV16wOfPdmQrECJFd4BJy4RzEtlXmtQ81+RLlYJ8it:30a00
TLSH T1A9459D81279417ADA4988CE774D8359B29D7D09E38322AD0DAE0FB0B7C3FDA474E4974
Magika txt
Reporter abuse_ch
Tags:js RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
82
Origin country :
SE SE
Vendor Threat Intelligence
Verdict:
Malicious
Score:
91.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68b68adb3e988eb6ab8391b9
Tags:
obfuscate xtreme spawn
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/d84b28f6ce7bca728fdf5eea7ed6cc3d6bed66d189c9218484d62fda4d5a4c9c
Verdict:
Malicious
File Type:
js
First seen:
2025-09-01T18:58:00Z UTC
Last seen:
2025-09-01T18:58:00Z UTC
Hits:
~10
Detections:
Trojan.JS.SAgent.sb HEUR:Trojan.Script.SAgent.gen
Link:
https://opentip.kaspersky.com/d84b28f6ce7bca728fdf5eea7ed6cc3d6bed66d189c9218484d62fda4d5a4c9c/results?tab=lookup
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1769266
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
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d84b28f6ce7bca728fdf5eea7ed6cc3d6bed66d189c9218484d62fda4d5a4c9c/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/d84b28f6ce7bca728fdf5eea7ed6cc3d6bed66d189c9218484d62fda4d5a4c9c
Threat name:
Script-JS.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2025-09-02 06:01:26 UTC
File Type:
Binary
AV detection:
10 of 38 (26.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3bfsr5woppfhfd67l3vh5vwmhvv62zwrrhesdbee2yx5utk2jsoa._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos discovery execution rat
Link:
https://tria.ge/reports/250902-gymzlsxky8/
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:
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/d84b28f6ce7bca728fdf5eea7ed6cc3d6bed66d189c9218484d62fda4d5a4c9c

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 d84b28f6ce7bca728fdf5eea7ed6cc3d6bed66d189c9218484d62fda4d5a4c9c

(this sample)

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

Comments