MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2f715504efe6c079f1e70cb26b8946ca4fe5e2f6e52a521cb3a358a2903bde65. 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: 10


Intelligence 10 IOCs YARA 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2f715504efe6c079f1e70cb26b8946ca4fe5e2f6e52a521cb3a358a2903bde65
SHA3-384 hash: 87f921de4d85d12b51816823feaa122b07fdf3492906f717955b392c2452708ed9ce015dd0b189b078ac4a065ac33887
SHA1 hash: b589645b4aa07c98edfc227006cbfb109172bb39
MD5 hash: e499caf060f71a2a1eafd7df6e9f1448
humanhash: salami-single-enemy-wyoming
File name:CopilotDrivers.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:6'388'921 bytes
First seen:2025-12-03 19:15:46 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 384:0qAFunKHAMgGxdWBj/RP9xX9uNfGTw6qZowmk5k4pTok4k9TTTg0jQV8:lrnKH3gGxdWB99xYkMZTmsadijQS
TLSH T173562306011C01D98367F4400A3C1F87A71C6D6BE76F85583CF832DEBF6DAA469B9A79
Magika javascript
Reporter abuse_ch
Tags:js RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
70
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Gathering data
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69308c84264b106bd646a650
Tags:
obfuscate xtreme shell
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm base64 base64 fingerprint obfuscated obfuscated overlay powershell repaired
Link:
https://www.filescan.io/uploads/69308c81856673a0547dfaa4/reports/51d45c9c-f858-4620-9989-fcbbe8b88dde/overview
Verdict:
Malicious
Labled as:
GT:JS.ObfPadding.1
Link:
https://www.hybrid-analysis.com/sample/2f715504efe6c079f1e70cb26b8946ca4fe5e2f6e52a521cb3a358a2903bde65
Result
Gathering data
Verdict:
Malicious
File Type:
js
Detections:
Trojan.JS.SAgent.sb HEUR:Trojan.Script.SAgent.gen HEUR:Trojan.Script.Generic
Link:
https://opentip.kaspersky.com/2f715504efe6c079f1e70cb26b8946ca4fe5e2f6e52a521cb3a358a2903bde65/results?tab=lookup
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1825744
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
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
Unusual module load detection (module proxying)
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: 1825744 Sample: CopilotDrivers.js Startdate: 03/12/2025 Architecture: WINDOWS Score: 100 27 hostphpwindowsdriversappssapo.duckdns.org 2->27 29 systemcopilotdriver.ydns.eu 2->29 31 7 other IPs or domains 2->31 39 Suricata IDS alerts for network traffic 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 47 13 other signatures 2->47 8 wscript.exe 1 2->8         started        signatures3 45 Uses dynamic DNS services 27->45 process4 signatures5 49 Suspicious powershell command line found 8->49 51 Wscript starts Powershell (via cmd or directly) 8->51 53 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->53 55 2 other signatures 8->55 11 powershell.exe 14 15 8->11         started        process6 dnsIp7 33 archive.org 207.241.224.2, 49718, 80 INTERNET-ARCHIVEUS United States 11->33 35 ia801700.us.archive.org 207.241.233.30, 49720, 80 INTERNET-ARCHIVEUS United States 11->35 37 systemcopilotdriver.ydns.eu 181.206.158.190, 3001, 49723, 49725 ColombiaMovilCO Colombia 11->37 57 Found Tor onion address 11->57 59 Writes to foreign memory regions 11->59 61 Injects a PE file into a foreign processes 11->61 63 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 11->63 15 MSBuild.exe 11->15         started        18 MSBuild.exe 4 2 11->18         started        21 conhost.exe 11->21         started        23 MSBuild.exe 11->23         started        signatures8 process9 file10 65 Contains functionality to bypass UAC (CMSTPLUA) 15->65 67 Contains functionality to steal Chrome passwords or cookies 15->67 69 Contains functionality to steal Firefox passwords or cookies 15->69 71 Unusual module load detection (module proxying) 15->71 25 C:\ProgramData\remcos\registros.dat, data 18->25 dropped 73 Detected Remcos RAT 18->73 75 Installs a global keyboard hook 18->75 signatures11
Score:
10%
Verdict:
Benign
File Type:
SCRIPT
Link:
https://malprob.io/report/2f715504efe6c079f1e70cb26b8946ca4fe5e2f6e52a521cb3a358a2903bde65
Verdict:
inconclusive
YARA:
1 match(es)
Link:
https://app.malva.re/file/e499caf060f71a2a1eafd7df6e9f1448
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2f715504efe6c079f1e70cb26b8946ca4fe5e2f6e52a521cb3a358a2903bde65/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/2f715504efe6c079f1e70cb26b8946ca4fe5e2f6e52a521cb3a358a2903bde65
Threat name:
Script-JS.Trojan.ObfPadding
Create hunting rule
Status:
Malicious
First seen:
2025-12-03 19:16:21 UTC
File Type:
Binary
AV detection:
8 of 36 (22.22%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=f5yvkbhp43aht4phbszgxckgzjh6lyxw4uvfehftunmkfeb33zsq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
n/a
Score:
  10/10
Tags:
execution
Link:
https://tria.ge/reports/251203-xyxf2sfm9t/
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:
http://archive.org/download/optimized_msi_20251201/optimized_MSI.png
Please note that we are no longer able to provide a coverage score for Virus Total.

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Remcos_unpacked_PulseIntel
Create hunting rule
Author:PulseIntel
Description:Remcos Payload
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)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_rat_unpacked
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research

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 2f715504efe6c079f1e70cb26b8946ca4fe5e2f6e52a521cb3a358a2903bde65

(this sample)

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

Comments