General

  • Target
    PrysMax v2.0.rar
  • Size 4.3MB
  • Sample260912-rrmelsdb69
  • SHA256 5d35c3a83890ef3c0fcad1b1c56d992d501c81d8cce855fc636ac813cc2a306f
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      PrysMax v2.0.rar
    • Size 4.3MB
    • SHA256 5d35c3a83890ef3c0fcad1b1c56d992d501c81d8cce855fc636ac813cc2a306f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    • Target
      PrysMax v2.0/BuilderV2.exe
    • Size 7.9MB
    • SHA256 8202e43c0bb77a0f1ca920f2ddd4728e731dad431a16f4d15202fcce1c753be8
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks whether UAC is enabled

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Target
      PrysMax v2.0/dbghelp.dll
    • Size 1.5MB
    • SHA256 9b5a2b7257a41739acea0a4d8b74d8bebd4789c3d85f5025045d0d68a7e67653
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10

MITRE ATT&CK Enterprise v16

Tasks