Windows
Analysis Report
HUDGEWS2352ERFQ.exe
Overview
General Information
Detection
Remcos
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to bypass UAC (CMSTPLUA)
Detected Remcos RAT
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
.NET source code contains potential unpacker
AI detected suspicious sample
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
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
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Uses schtasks.exe or at.exe to add and modify task schedules
Abnormal high CPU Usage
Allocates memory with a write watch (potentially for evading sandboxes)
Contains functionality for read data from the clipboard
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to download and launch executables
Contains functionality to dynamically determine API calls
Contains functionality to enumerate process and check for explorer.exe or svchost.exe (often used for thread injection)
Contains functionality to enumerate running services
Contains functionality to launch a control a shell (cmd.exe)
Contains functionality to modify clipboard data
Contains functionality to query CPU information (cpuid)
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the PEB
Contains functionality to read the clipboard data
Contains functionality to retrieve information about pressed keystrokes
Contains functionality to shutdown / reboot the system
Contains functionality to simulate mouse events
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Drops PE files
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found inlined nop instructions (likely shell or obfuscated code)
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicious Add Scheduled Task Parent
Sigma detected: Suspicious Schtasks From Env Var Folder
Uses 32bit PE files
Uses Microsoft's Enhanced Cryptographic Provider
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
HUDGEWS2352ERFQ.exe (PID: 6664 cmdline:
"C:\Users\ user\Deskt op\HUDGEWS 2352ERFQ.e xe" MD5: 8F251EC69C2FAAE7090B2BF78CFD4881) powershell.exe (PID: 5676 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\Des ktop\HUDGE WS2352ERFQ .exe" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) conhost.exe (PID: 3264 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) WmiPrvSE.exe (PID: 7420 cmdline:
C:\Windows \system32\ wbem\wmipr vse.exe -s ecured -Em bedding MD5: 60FF40CFD7FB8FE41EE4FE9AE5FE1C51) powershell.exe (PID: 5796 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\App Data\Roami ng\RAFUlP. exe" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) conhost.exe (PID: 6344 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) schtasks.exe (PID: 2596 cmdline:
"C:\Window s\System32 \schtasks. exe" /Crea te /TN "Up dates\RAFU lP" /XML " C:\Users\u ser\AppDat a\Local\Te mp\tmp53B5 .tmp" MD5: 48C2FE20575769DE916F48EF0676A965) conhost.exe (PID: 3368 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) HUDGEWS2352ERFQ.exe (PID: 7268 cmdline:
"C:\Users\ user\Deskt op\HUDGEWS 2352ERFQ.e xe" MD5: 8F251EC69C2FAAE7090B2BF78CFD4881)
RAFUlP.exe (PID: 7380 cmdline:
C:\Users\u ser\AppDat a\Roaming\ RAFUlP.exe MD5: 8F251EC69C2FAAE7090B2BF78CFD4881) schtasks.exe (PID: 7584 cmdline:
"C:\Window s\System32 \schtasks. exe" /Crea te /TN "Up dates\RAFU lP" /XML " C:\Users\u ser\AppDat a\Local\Te mp\tmp6112 .tmp" MD5: 48C2FE20575769DE916F48EF0676A965) conhost.exe (PID: 7592 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) RAFUlP.exe (PID: 7640 cmdline:
"C:\Users\ user\AppDa ta\Roaming \RAFUlP.ex e" MD5: 8F251EC69C2FAAE7090B2BF78CFD4881)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Remcos, RemcosRAT | Remcos (acronym of Remote Control & Surveillance Software) is a commercial Remote Access Tool to remotely control computers.Remcos is advertised as legitimate software which can be used for surveillance and penetration testing purposes, but has been used in numerous hacking campaigns.Remcos, once installed, opens a backdoor on the computer, granting full access to the remote user.Remcos is developed by the cybersecurity company BreakingSecurity. |
{"Host:Port:Password": "45.66.231.218:4259:0", "Assigned name": "THEONE", "Connect interval": "1", "Install flag": "Disable", "Setup HKCU\\Run": "Enable", "Setup HKLM\\Run": "Enable", "Install path": "Application path", "Copy file": "remcos.exe", "Startup value": "Disable", "Hide file": "Disable", "Mutex": "Rmc-UII1DP", "Keylog flag": "1", "Keylog path": "Application path", "Keylog file": "logs.dat", "Keylog crypt": "Disable", "Hide keylog file": "Disable", "Screenshot flag": "Disable", "Screenshot time": "10", "Take Screenshot option": "Disable", "Take screenshot title": "", "Take screenshot time": "5", "Screenshot path": "AppData", "Screenshot file": "Screenshots", "Screenshot crypt": "Disable", "Mouse option": "Disable", "Delete file": "Disable", "Audio record time": "5"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
Click to see the 22 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_UACBypassusingCMSTP | Yara detected UAC Bypass using CMSTP | Joe Security | ||
Windows_Trojan_Remcos_b296e965 | unknown | unknown |
| |
REMCOS_RAT_variants | unknown | unknown |
| |
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM | Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) | ditekSHen |
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