Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/01/2025, 14:08

General

  • Target
    4a39acb636f4952d68ed4a0cc98a5d6007dd082e214ad988f7240cd72b8cf043N.exe
  • Size 75KB
  • Sample250120-rfj54ssral
  • SHA256 4a39acb636f4952d68ed4a0cc98a5d6007dd082e214ad988f7240cd72b8cf043
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 19 IoCs

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

  • Maps connected drives based on registry 3 TTPs 6 IoCs

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

  • 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 3 IoCs

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

  • Modifies registry class 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4a39acb636f4952d68ed4a0cc98a5d6007dd082e214ad988f7240cd72b8cf043N.exe
    "C:\Users\Admin\AppData\Local\Temp\4a39acb636f4952d68ed4a0cc98a5d6007dd082e214ad988f7240cd72b8cf043N.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Maps connected drives based on registry
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3448
    • C:\Windows\SysWOW64\ctfmen.exe
      ctfmen.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:552
      • C:\Windows\SysWOW64\smnss.exe
        C:\Windows\system32\smnss.exe
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Enumerates connected drives
        • Maps connected drives based on registry
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        PID:2996

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        ctfmen.exe

        • Path C:\Windows\SysWOW64\ctfmen.exe
        • Size 4KB
        • SHA256 4d2f676a370209447acf094e7a7531eb05ae0e333c340ce784f95d9fd86861ad
        • MD5 SHA1 SHA512 SSDEEP

        grcopy.dll

        • Path C:\Windows\SysWOW64\grcopy.dll
        • Size 75KB
        • SHA256 9642eea507575844879269fbdf393bb6920e1c2f86d011809894b98f7ded4cfc
        • MD5 SHA1 SHA512 SSDEEP

        satornas.dll

        • Path C:\Windows\SysWOW64\satornas.dll
        • Size 183B
        • SHA256 20361781294516b7d97b689024eca56d783bf6f40b8b0b128e9c136c2550e6ec
        • MD5 SHA1 SHA512

        shervans.dll

        • Path C:\Windows\SysWOW64\shervans.dll
        • Size 8KB
        • SHA256 e71d91847f8eb150dd9dc3fdcec37928de22084ee53acb000e484fed1c6b6292
        • MD5 SHA1 SHA512 SSDEEP

        memory/552-23-0x0000000000400000-0x0000000000409000-memory.dmp

        memory/552-28-0x0000000000400000-0x0000000000409000-memory.dmp

        memory/2996-39-0x0000000000400000-0x000000000041C000-memory.dmp

        memory/2996-35-0x0000000010000000-0x000000001000D000-memory.dmp

        memory/2996-37-0x0000000000400000-0x000000000041C000-memory.dmp

        memory/2996-38-0x0000000010000000-0x000000001000D000-memory.dmp

        memory/2996-41-0x0000000000400000-0x000000000041C000-memory.dmp

        memory/2996-43-0x0000000000400000-0x000000000041C000-memory.dmp

        memory/2996-45-0x0000000000400000-0x000000000041C000-memory.dmp

        memory/2996-47-0x0000000000400000-0x000000000041C000-memory.dmp

        memory/2996-51-0x0000000000400000-0x000000000041C000-memory.dmp

        memory/2996-53-0x0000000000400000-0x000000000041C000-memory.dmp

        memory/3448-20-0x0000000000400000-0x000000000041C000-memory.dmp

        memory/3448-22-0x0000000010000000-0x000000001000D000-memory.dmp

        memory/3448-11-0x0000000010000000-0x000000001000D000-memory.dmp