MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6f5bd4915a2e39198fa74aa7dd6e31f2398f581ca6d88437b6d9c3978b29aa10. 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


Intelligence 12 IOCs YARA 1 File information Comments

SHA256 hash: 6f5bd4915a2e39198fa74aa7dd6e31f2398f581ca6d88437b6d9c3978b29aa10
SHA3-384 hash: b6511b65a2a2c1df49388810c3fd3c32adb5e776644931af828000e4eb6a199fa9a02216854a5d0522c153ec2379b15b
SHA1 hash: 2c4ffcfc329db7c6ac42fb2b9e362edc3662f38b
MD5 hash: 84c2f19a8c699880ddec3ace5986fb9a
humanhash: charlie-quebec-enemy-cat
File name:RFQ_SBS_USA.vbs
Download: download sample
Signature RemcosRAT
File size:27'781 bytes
First seen:2025-08-08 16:41:19 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 384:k+U4rfIN4zGPqoJBnTh0dN5IcoR4jCf7ny0i4hsBhAs8iuZg02frOsfkNOp/M0iO:ZfIGCyoJBTU5YrWz0XVgOsiubR
Threatray 2'158 similar samples on MalwareBazaar
TLSH T173C2D83AC8846FF00B6F62E1AD0B795980951326B6743A1D75CE94EC3B7A321CFD40DA
Magika vba
Reporter abuse_ch
Tags:RemcosRAT vbs

Intelligence


File Origin
# of uploads :
1
# of downloads :
46
Origin country :
SE SE
Vendor Threat Intelligence
Verdict:
Malicious
Score:
94.9%
Tags:
obfuscate xtreme shell
Result
Threat name:
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Signature
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
Contains functionality to bypass UAC (CMSTPLUA)
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
Detected Remcos RAT
Found hidden mapped module (file has been removed from disk)
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 dropped file
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)
Uses dynamic DNS services
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:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1753184 Sample: RFQ_SBS_USA.vbs Startdate: 08/08/2025 Architecture: WINDOWS Score: 100 40 lastlast.duckdns.org 2->40 42 geoplugin.net 2->42 44 2 other IPs or domains 2->44 58 Suricata IDS alerts for network traffic 2->58 60 Found malware configuration 2->60 62 Malicious sample detected (through community Yara rule) 2->62 66 18 other signatures 2->66 9 wscript.exe 1 2->9         started        signatures3 64 Uses dynamic DNS services 40->64 process4 signatures5 76 VBScript performs obfuscated calls to suspicious functions 9->76 78 Suspicious powershell command line found 9->78 80 Wscript starts Powershell (via cmd or directly) 9->80 82 2 other signatures 9->82 12 powershell.exe 14 17 9->12         started        process6 dnsIp7 46 176.46.152.39, 49688, 80 ESTPAKEE Iran (ISLAMIC Republic Of) 12->46 48 bitbucket.org 104.192.142.24, 443, 49687 AMAZON-AESUS United States 12->48 84 Writes to foreign memory regions 12->84 86 Injects a PE file into a foreign processes 12->86 16 MSBuild.exe 4 16 12->16         started        21 conhost.exe 12->21         started        signatures8 process9 dnsIp10 36 lastlast.duckdns.org 46.246.34.53, 49691, 49693, 65130 CYBERDYNELR Sweden 16->36 38 geoplugin.net 178.237.33.50, 49694, 80 ATOM86-ASATOM86NL Netherlands 16->38 30 C:\Users\user\AppData\Local\Temp\TH6E35.tmp, MS-DOS 16->30 dropped 32 C:\Users\user\AppData\Local\Temp\TH6E14.tmp, MS-DOS 16->32 dropped 34 C:\Users\user\AppData\Local\Temp\TH6DF4.tmp, PE32 16->34 dropped 50 Contains functionality to bypass UAC (CMSTPLUA) 16->50 52 Detected Remcos RAT 16->52 54 Contains functionalty to change the wallpaper 16->54 56 5 other signatures 16->56 23 RmClient.exe 1 16->23         started        26 RmClient.exe 2 16->26         started        28 RmClient.exe 1 16->28         started        file11 signatures12 process13 signatures14 68 Tries to steal Instant Messenger accounts or passwords 23->68 70 Tries to steal Mail credentials (via file / registry access) 23->70 72 Tries to steal Mail credentials (via file registry) 26->72 74 Tries to harvest and steal browser information (history, passwords, etc) 26->74
Verdict:
Malware
YARA:
1 match(es)
Tags:
DeObfuscated Obfuscated Scripting.FileSystemObject T1059.005 VBScript WScript.Network
Threat name:
Win32.Backdoor.Remcos
Status:
Malicious
First seen:
2025-08-08 01:08:51 UTC
File Type:
Text (VBS)
AV detection:
12 of 37 (32.43%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos collection discovery execution rat
Behaviour
Suspicious behavior: EnumeratesProcesses
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
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
Blocklisted process makes network request
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
last0.duckdns.org:65130
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: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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