Windows
Analysis Report
Alior,pdf.bat
Overview
General Information
Detection
Remcos, GuLoader
Score: | 100 |
Range: | 0 - 100 |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Detected Remcos RAT
Early bird code injection technique detected
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Yara detected GuLoader
Yara detected Powershell download and execute
Yara detected Remcos RAT
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
Found suspicious powershell code related to unpacking or dynamic code loading
Hides threads from debuggers
Joe Sandbox ML detected suspicious sample
Queues an APC in another process (thread injection)
Suspicious powershell command line found
Uses dynamic DNS services
Writes to foreign memory regions
Abnormal high CPU Usage
Checks if the current process is being debugged
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Creates files inside the system directory
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
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 disk information (often used to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: Direct Autorun Keys Modification
Sigma detected: Msiexec Initiated Connection
Sigma detected: Potential Persistence Attempt Via Run Keys Using Reg.EXE
Sleep loop found (likely to delay execution)
Suricata IDS alerts with low severity for network traffic
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Uses reg.exe to modify the Windows registry
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Very long command line found
Yara signature match
Classification
- System is w10x64
cmd.exe (PID: 6200 cmdline:
C:\Windows \system32\ cmd.exe /c ""C:\User s\user\Des ktop\Alior ,pdf.bat" " MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) conhost.exe (PID: 6216 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) powershell.exe (PID: 6392 cmdline:
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