Analysis

  • max time kernel
    94s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/11/2024, 06:21

General

  • Target
    2f823f8d90b8111c42438cf2ff131de94dc335a23247893c9a5cc30f5e6e1584N.exe
  • Size 4.2MB
  • Sample241114-g4pqdsvkey
  • SHA256 2f823f8d90b8111c42438cf2ff131de94dc335a23247893c9a5cc30f5e6e1584
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Renames multiple (316) files with added filename extension

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2f823f8d90b8111c42438cf2ff131de94dc335a23247893c9a5cc30f5e6e1584N.exe
    "C:\Users\Admin\AppData\Local\Temp\2f823f8d90b8111c42438cf2ff131de94dc335a23247893c9a5cc30f5e6e1584N.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2268
    • C:\Windows\SysWOW64\sysx32.exe
      C:\Windows\system32\sysx32.exe /scan
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      PID:1908
    • C:\Users\Admin\AppData\Local\Temp\_2f823f8d90b8111c42438cf2ff131de94dc335a23247893c9a5cc30f5e6e1584N.exe
      C:\Users\Admin\AppData\Local\Temp\_2f823f8d90b8111c42438cf2ff131de94dc335a23247893c9a5cc30f5e6e1584N.exe
      2⤵
      • Executes dropped EXE
      PID:1800

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 4.2MB
        • SHA256 004ebe79e253e251e3b1ec9ed1e5538db6aef598e0f11c785c76911b1809f5dd
        • MD5 SHA1 SHA512 SSDEEP

        _2f823f8d90b8111c42438cf2ff131de94dc335a23247893c9a5cc30f5e6e1584N.exe

        • Path C:\Users\Admin\AppData\Local\Temp\_2f823f8d90b8111c42438cf2ff131de94dc335a23247893c9a5cc30f5e6e1584N.exe
        • Size 4.2MB
        • SHA256 29be8a003cb82e1ebab07c72bdd6f875c6235cbe0308e94b13954075c2bc38bf
        • MD5 SHA1 SHA512 SSDEEP

        sysx32.exe

        • Path C:\Windows\SysWOW64\sysx32.exe
        • Size 4.2MB
        • SHA256 2f823f8d90b8111c42438cf2ff131de94dc335a23247893c9a5cc30f5e6e1584
        • MD5 SHA1 SHA512 SSDEEP

        memory/1908-1074-0x0000000000400000-0x0000000000411000-memory.dmp

        memory/1908-1075-0x0000000000400000-0x0000000000411000-memory.dmp

        memory/1908-2687-0x0000000000400000-0x0000000000411000-memory.dmp

        memory/1908-2688-0x0000000000400000-0x0000000000411000-memory.dmp

        memory/1908-2689-0x0000000000400000-0x0000000000411000-memory.dmp

        memory/2268-0-0x0000000000400000-0x0000000000411000-memory.dmp

        memory/2268-101-0x0000000000400000-0x0000000000411000-memory.dmp