MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 40c57fa42423325baf7c646e4c135942c28495cdfa2b8ccec3455dc341013ef7. 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
| SHA256 hash: | 40c57fa42423325baf7c646e4c135942c28495cdfa2b8ccec3455dc341013ef7 |
|---|---|
| SHA3-384 hash: | 3fac13f8a3f4548418d3444743e507cabf52478b0709d8237f5e7c7fbed82feb9eb62e240c53b296675fa03723811cda |
| SHA1 hash: | 6621e2b4f3696b66dbf70ace1887a9ef7c5cd12f |
| MD5 hash: | c02aa03889a16eb61be3232bf109c85c |
| humanhash: | december-nitrogen-mississippi-monkey |
| File name: | SKMT209393002V_202509.vbs |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 16'335 bytes |
| First seen: | 2025-09-16 08:08:06 UTC |
| Last seen: | Never |
| File type: |  vbs |
| MIME type: | text/plain |
| ssdeep | 384:Xp+3etNJhzWrE2sKnuVgO1qDjKhiDyTQwfhmfXa:XRtMZYVigiuQ8mfXa |
| Threatray | 1'454 similar samples on MalwareBazaar |
| TLSH | T14C72DD3DE558EFF00B5E62F0109B7D1670A4D722B935DA7D68DA81A83F232528F950EC |
| Magika | vba |
| Reporter |  abuse_ch |
| Tags: | RemcosRAT vbs |
Intelligence
File Origin
# of uploads :
1
# of downloads :
52
Origin country :
SEVendor Threat Intelligence
Detection:
n/a
Verdict:
Malicious
Score:
94.9%
Tags:
obfuscate xtreme shell
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Malicious
File Type:
vbs
First seen:
2025-09-15T05:09:00Z UTC
Last seen:
2025-09-15T05:09:00Z UTC
Hits:
~1000
Result
Threat name:
Remcos
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Powershell Decrypt And Execute Base64 Data
Sigma detected: Remcos
Sigma detected: Silenttrinity Stager Msbuild Activity
Sigma detected: Suspicious PowerShell IEX Execution Patterns
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)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
VBScript performs obfuscated calls to suspicious functions
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 decode and execute
Yara detected Powershell download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Score:
97%
Verdict:
Malware
File Type:
SCRIPT
Verdict:
inconclusive
YARA:
1 match(es)
Threat name:
Script-WScript.Trojan.GuLoader
Status:
Malicious
First seen:
2025-09-15 08:33:49 UTC
File Type:
Text (VBS)
AV detection:
11 of 38 (28.95%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
admintool_mailpassview
nirsoft
remcos
Similar samples:
+ 1'444 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:remotehost collection defense_evasion discovery execution rat
Behaviour
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Command and Scripting Interpreter: PowerShell
Checks computer location settings
Badlisted process makes network request
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
79.110.50.90:3029
Malware family:
Remcos
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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.
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