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Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    20/07/2024, 07:16

General

  • Target

    63679243c47c8c9690b42098778611c0N.exe

  • Size

    21KB

  • MD5

    63679243c47c8c9690b42098778611c0

  • SHA1

    ec59c9fc2e5a18114f0abde2e3ea99510897a56b

  • SHA256

    8ac15f82a2bb641c962e25e2d50c83697a544218b80da5e4378b8f6ad4f86dc2

  • SHA512

    f8385fa201d92443675dce1efcab89b824544abc4663152717c1765d023b79310495f2dd0f467a238be2aa6144915120d54d4079d125c7335c67d8ded8748a54

  • SSDEEP

    384:UBWoC5GDr6wc/w3HgM6vDUTAXBGCVf4WVlFvX6S3k5i:rRkiLw3HsDSARGG/qS3yi

Malware Config

Signatures

  • Windows security bypass 2 TTPs 4 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Drops file in Drivers directory 1 IoCs
  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Windows security modification 2 TTPs 4 IoCs
  • Modifies WinLogon 2 TTPs 5 IoCs
  • Drops file in System32 directory 12 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:432
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1232
        • C:\Users\Admin\AppData\Local\Temp\63679243c47c8c9690b42098778611c0N.exe
          "C:\Users\Admin\AppData\Local\Temp\63679243c47c8c9690b42098778611c0N.exe"
          2⤵
          • Loads dropped DLL
          • Drops file in System32 directory
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2780
          • C:\Windows\SysWOW64\rmass.exe
            "C:\Windows\system32\rmass.exe"
            3⤵
            • Windows security bypass
            • Boot or Logon Autostart Execution: Active Setup
            • Drops file in Drivers directory
            • Event Triggered Execution: Image File Execution Options Injection
            • Executes dropped EXE
            • Loads dropped DLL
            • Windows security modification
            • Modifies WinLogon
            • Drops file in System32 directory
            • Drops file in Program Files directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2784
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:2736

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Windows\SysWOW64\RECOVER32.DLL

        Filesize

        5KB

        MD5

        2b2c28a7a01f9584fe220ef84003427f

        SHA1

        5fc023df0b5064045eb8de7f2dbe26f07f6fec70

        SHA256

        9e00af53b1d0c0f5270d94a666d95aa7b4dcb9fea49487c210c055c9dcfcc9eb

        SHA512

        39192a8a91dec1abff25af8dac0cf39da4dfd51b3fb4f1ef0b4e776185d4280fbe8387c2ea778da7bbf2ce288b0bce4d23cbe8d9e87bbd250159044f5adbac78

      • C:\Windows\SysWOW64\ahuy.exe

        Filesize

        23KB

        MD5

        00ec08539ee63bbc069978d9d2262092

        SHA1

        4d88ce31d5414f63d6665ad8ede50591bb605687

        SHA256

        e78a107303d39f995019757487f452b080f1d8aa170ad3141eba0b8f96a61897

        SHA512

        8a7490e398a2b185b9a0f02ac1532d3d179ec83972cf99c8b4fddfa1f2e0d6d3bbc8e0433185d839bc5521995dcdbf7ca93d456da7144b3c76a477f75729ffb0

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        24KB

        MD5

        a5260a607b6228e2fb7ee07a571695af

        SHA1

        7e3c020e3ffef41a71b13f33006f09de3ae8daad

        SHA256

        8e016e168c16e447839c3186a3b64606be1587657c71312bdfb960c8b3ca1989

        SHA512

        a8b1910bed141cd26a5f5e07eca0c14ae2146bf02b8ee047d8c06d6289cd67bc9dc49a9cb52107d199533b5fdb80b83b2c5e2ac4d9b9a5ba082346a5f774df9f

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        21KB

        MD5

        63679243c47c8c9690b42098778611c0

        SHA1

        ec59c9fc2e5a18114f0abde2e3ea99510897a56b

        SHA256

        8ac15f82a2bb641c962e25e2d50c83697a544218b80da5e4378b8f6ad4f86dc2

        SHA512

        f8385fa201d92443675dce1efcab89b824544abc4663152717c1765d023b79310495f2dd0f467a238be2aa6144915120d54d4079d125c7335c67d8ded8748a54

      • memory/2736-25-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2780-0-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2780-11-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2784-13-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2784-59-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB