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Analysis

  • max time kernel
    149s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/05/2024, 14:37

General

  • Target

    dcec5319d1ed548b7523cda83292aad0_NEIKI.exe

  • Size

    22KB

  • MD5

    dcec5319d1ed548b7523cda83292aad0

  • SHA1

    d352a94f3510a1bee94d0657ae951cf498bee616

  • SHA256

    a945ee255ac7bc5751c05c4913b69c1f0397f176fe502c223f27b9d1ba2a5c37

  • SHA512

    28019f287be93831b71c7b58c0fa1f546a91a5aa7eed2b570eca49ed82b8a985b7cd59f029ea64cb08e7f777742585b9cf229fbffcd455e4ca88810b1c42f62a

  • SSDEEP

    384:UBWoC5GDr6wc/w3HgM6vDUTAXBGCVf4WVlFvX8Mb7a6Mr0:rRkiLw3HsDSARGG/MMb7rH

Malware Config

Signatures

  • Windows security bypass 2 TTPs 4 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • Sets file execution options in registry 2 TTPs 3 IoCs
  • Executes dropped EXE 2 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:608
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:3432
        • C:\Users\Admin\AppData\Local\Temp\dcec5319d1ed548b7523cda83292aad0_NEIKI.exe
          "C:\Users\Admin\AppData\Local\Temp\dcec5319d1ed548b7523cda83292aad0_NEIKI.exe"
          2⤵
          • Drops file in System32 directory
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3836
          • C:\Windows\SysWOW64\rmass.exe
            "C:\Windows\system32\rmass.exe"
            3⤵
            • Windows security bypass
            • Drops file in Drivers directory
            • Modifies Installed Components in the registry
            • Sets file execution options in registry
            • Executes dropped EXE
            • 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:1932
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:4368

      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

        24KB

        MD5

        057ec94dc6fbadd308fb005a9335fb4a

        SHA1

        7e2f81016269b103444eb3414e0de9ece42df4cf

        SHA256

        65d599c1915b6ac65ef5389f81b0098c3696fd63d5884e9be31602114fb06e39

        SHA512

        635504d2a2726ab1470f293d09ce71395bfc9d5002df23bb4d46c83e8352d90c7cad1ac634a56e5c9315a2098960ed8caeb82c92aec5fc27b75ae62d752ff6c6

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        25KB

        MD5

        10231d8164bcef2500b28d7663c2f107

        SHA1

        d58821c40ff1330a34d7bc0516b248d21ae2065e

        SHA256

        0ade278928607711b44e704f46a3e4e489ef63ea3ca27a8dcedfd95c37d427cc

        SHA512

        983d05d900f57469112b91884907d028d123ba65b9f9f2c83ad566bb46060444f764baee89347ee5e42435613ad073c4cb35ef20719e5a87530727762467d976

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        22KB

        MD5

        dcec5319d1ed548b7523cda83292aad0

        SHA1

        d352a94f3510a1bee94d0657ae951cf498bee616

        SHA256

        a945ee255ac7bc5751c05c4913b69c1f0397f176fe502c223f27b9d1ba2a5c37

        SHA512

        28019f287be93831b71c7b58c0fa1f546a91a5aa7eed2b570eca49ed82b8a985b7cd59f029ea64cb08e7f777742585b9cf229fbffcd455e4ca88810b1c42f62a

      • C:\Windows\System32\drivers\etc\hosts

        Filesize

        1KB

        MD5

        6f47b62de25d1745e296a06b3f98ed19

        SHA1

        a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f

        SHA256

        15c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4

        SHA512

        dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7

      • memory/1932-9-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/1932-52-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/3836-0-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/3836-7-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/4368-53-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB