MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b6f881bb73e51ddbdae22c5bca8dd973cc4532e2c802e45fe138c296056b88f7. 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
| SHA256 hash: | b6f881bb73e51ddbdae22c5bca8dd973cc4532e2c802e45fe138c296056b88f7 |
|---|---|
| SHA3-384 hash: | 81628d5d1a8491b119be2f1805fea5e73847a76572bc8994e85ec8cd54cb53b9b65a1da309ce72815ba83b83af0aa7fe |
| SHA1 hash: | fb17f97993a2570f0979fc872799f5c60ff5ce6c |
| MD5 hash: | c913aab0d6b49e404363ad1c7d5830e5 |
| humanhash: | ceiling-ohio-cola-nineteen |
| File name: | Zapytanie ofertowe BILFINGER 4830-26.js |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 5'811'608 bytes |
| First seen: | 2026-09-17 15:04:13 UTC |
| Last seen: | Never |
| File type: |  js |
| MIME type: | text/plain |
| ssdeep | 3072:5lyVtSonZDRw8w3FMAn1BRwFC1g74Fb2ZG2pb1iuNPUnknInEZnsF+XCowPa9gYw:J |
| TLSH | T10F468E13812EA10A73F1392C24DF9A05BCD7F610D8DF6AD6EACD6415E13DA38522D93B |
| TrID | 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1) 33.3% (.MP3) MP3 audio (1000/1) |
| Magika | vba |
| Reporter |  abuse_ch |
| Tags: | js RemcosRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
173
Origin country :
SEVendor Threat Intelligence
No detections
Detection(s):
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
repaired
Verdict:
Malicious
Labled as:
GT:JS.Loader.30
Verdict:
Malicious
File Type:
js
First seen:
2026-09-17T05:51:00Z UTC
Last seen:
2026-09-19T04:26:00Z UTC
Hits:
~100
Result
Threat name:
Remcos
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Antivirus detection for URL or domain
Attempt to bypass Chrome Application-Bound Encryption
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to register a low level keyboard hook
Contains functionalty to change the wallpaper
Creates processes via WMI
Detected large data written to user environment variables, potentially indicating payload staging for fileless execution
Detected Remcos RAT
Found evasive API chain checking for user administrative privileges
Found malware configuration
Injects a PE file into a foreign processes
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: Potential Data Stealing Via Chromium Headless Debugging
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Remcos
Sigma detected: Suspicious Environment Variable Has Been Registered
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Unusual module load detection (module proxying)
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 MSIL Injector
Yara detected Powershell decode and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Gathering data
Detection:
remcos
Threat name:
Script-JS.Trojan.Heuristic
Status:
Malicious
First seen:
2026-09-17 12:56:36 UTC
File Type:
Text (JavaScript)
AV detection:
7 of 24 (29.17%)
Threat level:
2/5
Detection(s):
Suspicious file
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:log_august collection credential_access discovery execution rat stealer
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
outlook_office_path
Browser Information Discovery
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
System Time Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Loads dropped DLL
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Uses browser remote debugging
Family: Remcos
Process spawned unexpected child process
Malware Config
C2 Extraction:
thrillermotion.4nmn.com:2022
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.71
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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