General

  • Target
    rasery1005.exe
  • Size 93KB
  • Sample260815-t8fphazeng
  • SHA256 228082033c343c9f2341f8c6d529188f9ccb63135b32edcc3fd21c3ffcfa6faf
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      rasery1005.exe
    • Size 93KB
    • SHA256 228082033c343c9f2341f8c6d529188f9ccb63135b32edcc3fd21c3ffcfa6faf
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Renames multiple (6110) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Manipulates Digital Signatures

      Attackers can apply techniques such as modifying certain DLL exports to make their binary seem valid.

    • Boot or Logon Autostart Execution: Print Processors

      Adversaries may abuse print processors to run malicious DLLs during system boot for persistence and/or privilege escalation.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Drops file in System32 directory

    • Modifies termsrv.dll

      Commonly used to allow simultaneous RDP sessions.

MITRE ATT&CK Enterprise v16

Tasks