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Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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
  • Loads dropped DLL 3 IoCs
  • UPX packed file 7 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:428
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1192
        • C:\Users\Admin\AppData\Local\Temp\dcec5319d1ed548b7523cda83292aad0_NEIKI.exe
          "C:\Users\Admin\AppData\Local\Temp\dcec5319d1ed548b7523cda83292aad0_NEIKI.exe"
          2⤵
          • Loads dropped DLL
          • Drops file in System32 directory
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2244
          • 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
            • 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:2596
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:2536

      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

        f74e63afa96baa9a09bcf23913280ca2

        SHA1

        4bf7f4456af85b5a4a36cd56f8d4313c96967d4b

        SHA256

        460359caaeb6c7ce4b0bc87405d6c2b4b8f2e2a2d859add415186eba7b25dbba

        SHA512

        9ff6ea0578d770ce0412fa4fafa285f7882fd200a710353165491011e6cdcd1c863d90385094dd834821224f699ab2c5076a6df69af04ab7cfdad954d83fb2c5

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        25KB

        MD5

        8e75ada8feea226e7cf90aa8155eb40d

        SHA1

        47e91370b794b36f47474d3a14cbcb3403c080a7

        SHA256

        85e7b9dca8b3fdf32bbc93020a2fd4bf25532f565b01c99603a7308282ed79b7

        SHA512

        a4e84c9c99b323bc433c7f0b0ec69feff8e9dfd28af29fe2d78b213c272d3679dd1835de35f81ab7981018d69a9733cc31f0212c719380da7a25dc817b2ac57c

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

        Filesize

        1KB

        MD5

        b10b13206b0f2cf3968050072f6979bf

        SHA1

        699db21ba9cecf3f13ac3d76e22cfa41aa94da80

        SHA256

        0eef3217095cb97b695c434e74d6314bf9e869a013d6e9c88e58c34576a276b4

        SHA512

        d33bfd931be6676539507a69101d99fa4c5ef36b12422bd11f063b9b6a47b7444f6c4ad5f35e044714fdb872e96cd9fddf049e8329af1219483887f6ac5f4a5d

      • \Windows\SysWOW64\rmass.exe

        Filesize

        22KB

        MD5

        dcec5319d1ed548b7523cda83292aad0

        SHA1

        d352a94f3510a1bee94d0657ae951cf498bee616

        SHA256

        a945ee255ac7bc5751c05c4913b69c1f0397f176fe502c223f27b9d1ba2a5c37

        SHA512

        28019f287be93831b71c7b58c0fa1f546a91a5aa7eed2b570eca49ed82b8a985b7cd59f029ea64cb08e7f777742585b9cf229fbffcd455e4ca88810b1c42f62a

      • memory/2244-12-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2244-0-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2244-5-0x0000000000320000-0x0000000000331000-memory.dmp

        Filesize

        68KB

      • memory/2536-61-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2596-18-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2596-19-0x00000000002F0000-0x0000000000301000-memory.dmp

        Filesize

        68KB

      • memory/2596-60-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2596-100-0x00000000002F0000-0x0000000000301000-memory.dmp

        Filesize

        68KB