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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e07ba399fe939b18fc6aeb9b7fc831c746b14d6854d107c9211bf0e7fbcad1c8. 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 File information Comments

SHA256 hash: e07ba399fe939b18fc6aeb9b7fc831c746b14d6854d107c9211bf0e7fbcad1c8
SHA3-384 hash: f9069b8390ca60d4332dbcec56b8702ec32679f4d1d7cb1ac7c87a68bb62cfb92e618d267334a784e118da989aa21182
SHA1 hash: 0e56e92d8a24d97cfb152cfece8a34779f2f2276
MD5 hash: a980540a1a4a78b65094d486e3146857
humanhash: freddie-oregon-network-angel
File name:sostener.vbs
Download: download sample
Signature RemcosRAT
File size:1'760'864 bytes
First seen:2024-06-05 07:26:26 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 768:MRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR/V:GIO
TLSH T1FA85BE1617E75504F1E12AC9583641B4CF23BAA6AE3DDE6C18DC240D5BFB9888C60FE7
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Reporter lontze7
Tags:remcos RemcosRAT vbs


Avatar
lontze7
http://191.98.25.251/sostener.vbs

Intelligence


File Origin
# of uploads :
1
# of downloads :
163
Origin country :
GR GR
Vendor Threat Intelligence
Verdict:
Malicious
Score:
92.5%
Tags:
Encryption Execution Network Stealth Talu
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
lolbin powershell schtasks syncappvpublishingserver
Result
Threat name:
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
AI detected suspicious sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Connects to a pastebin service (likely for C&C)
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
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Snort IDS alert for network traffic
Suspicious execution chain found
Suspicious powershell command line found
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 Generic Downloader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1452204 Sample: sostener.vbs Startdate: 05/06/2024 Architecture: WINDOWS Score: 100 28 remcoss2024feb.duckdns.org 2->28 30 paste.ee 2->30 42 Snort IDS alert for network traffic 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 52 13 other signatures 2->52 9 wscript.exe 1 2->9         started        signatures3 48 Uses dynamic DNS services 28->48 50 Connects to a pastebin service (likely for C&C) 30->50 process4 signatures5 62 VBScript performs obfuscated calls to suspicious functions 9->62 64 Suspicious powershell command line found 9->64 66 Wscript starts Powershell (via cmd or directly) 9->66 68 2 other signatures 9->68 12 powershell.exe 7 9->12         started        process6 signatures7 70 Suspicious powershell command line found 12->70 72 Found suspicious powershell code related to unpacking or dynamic code loading 12->72 15 powershell.exe 14 15 12->15         started        19 conhost.exe 12->19         started        process8 dnsIp9 34 91.202.233.169, 49706, 80 M247GB Russian Federation 15->34 36 paste.ee 188.114.96.3, 443, 49707 CLOUDFLARENETUS European Union 15->36 38 Writes to foreign memory regions 15->38 40 Injects a PE file into a foreign processes 15->40 21 RegSvcs.exe 3 2 15->21         started        signatures10 process11 dnsIp12 32 remcoss2024feb.duckdns.org 191.98.25.251, 4576, 49708, 49709 EPMTelecomunicacionesSAESPCO Colombia 21->32 26 C:\ProgramData\remcos\logs.dat, data 21->26 dropped 54 Contains functionality to bypass UAC (CMSTPLUA) 21->54 56 Detected Remcos RAT 21->56 58 Contains functionalty to change the wallpaper 21->58 60 5 other signatures 21->60 file13 signatures14
Threat name:
Script.Backdoor.Remcos
Status:
Suspicious
First seen:
2024-06-05 07:27:05 UTC
File Type:
Text (VBS)
AV detection:
8 of 38 (21.05%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:remotehost execution rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Blocklisted process makes network request
Remcos
Malware Config
C2 Extraction:
remcoss2024feb.duckdns.org:4576
Dropper Extraction:
http://91.202.233.169/Tak/Reg/Marz/ZQWER/DllXF3.txt
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Web download

RemcosRAT

Visual Basic Script (vbs) vbs e07ba399fe939b18fc6aeb9b7fc831c746b14d6854d107c9211bf0e7fbcad1c8

(this sample)

  
Delivery method
Distributed via web download

Comments