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Windows Analysis Report
SD 2477.exe


General Information

Sample Name:SD 2477.exe
Analysis ID:625173


GuLoader, Remcos
Range:0 - 100


Detected unpacking (changes PE section rights)
Antivirus detection for dropped file
Yara detected GuLoader
Found malware configuration
Multi AV Scanner detection for submitted file
Yara detected Remcos RAT
Multi AV Scanner detection for dropped file
Tries to steal Mail credentials (via file / registry access)
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to steal Mail credentials (via file registry)
Injects a PE file into a foreign processes
Tries to harvest and steal browser information (history, passwords, etc)
Installs a global keyboard hook
Yara detected WebBrowserPassView password recovery tool
C2 URLs / IPs found in malware configuration
Tries to steal Instant Messenger accounts or passwords
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to check the parent process ID (often done to detect debuggers and analysis systems)
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to dynamically determine API calls
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Drops PE files
Tries to load missing DLLs
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Checks if the current process is being debugged
Creates a process in suspended mode (likely to inject code)
Contains functionality for read data from the clipboard
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Contains functionality to shutdown / reboot the system
Internet Provider seen in connection with other malware
Found potential string decryption / allocating functions
Contains functionality to call native functions
Found dropped PE file which has not been started or loaded
Contains functionality for execution timing, often used to detect debuggers
Enables debug privileges
PE file does not import any functions
Sample file is different than original file name gathered from version info
Extensive use of GetProcAddress (often used to hide API calls)
Detected TCP or UDP traffic on non-standard ports
PE / OLE file has an invalid certificate
Uses Microsoft's Enhanced Cryptographic Provider
Found WSH timer for Javascript or VBS script (likely evasive script)