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Analysis

  • max time kernel
    149s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    08/05/2024, 15:45

General

  • Target

    f537775e473e7ef09eaffb24889df490_NEIKI.exe

  • Size

    21KB

  • MD5

    f537775e473e7ef09eaffb24889df490

  • SHA1

    b41031414c7ba6dc3b0f57ee7b84cc9942d06edb

  • SHA256

    4672e5a178fc023be578c92ff551ff106837336c596824d3c46f2f48d6e6f798

  • SHA512

    49a73992cd501c05b303bf9ff5ade07745c666703f961816ae9238b30e7ed4b51ad1be8d46f932fd9a351be170ce6dcd4a43e5355a29b3824dcae7a777186a70

  • SSDEEP

    384:UBWoC5GDr6wc/w3HgM6vDUTAXBGCVf4WVlFvX8Mb7a6khL:rRkiLw3HsDSARGG/MMb7rO

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:436
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1404
        • C:\Users\Admin\AppData\Local\Temp\f537775e473e7ef09eaffb24889df490_NEIKI.exe
          "C:\Users\Admin\AppData\Local\Temp\f537775e473e7ef09eaffb24889df490_NEIKI.exe"
          2⤵
          • Loads dropped DLL
          • Drops file in System32 directory
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2004
          • 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:2000
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:2400

      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

        3700e20a6ab17f525b10b6a97ad73f83

        SHA1

        ee897290471aad198fe2068df936a4319156b1ff

        SHA256

        4a67f6c2092710a9de1c0a50ccfc59f4fba734bbcc9c3c7703453b859069d609

        SHA512

        c306a821c93c67075761394b9ce7d5a9e64a1bc38f1b3299f38f11e21e95ebeb42e98de0a0630d1d07ef0da59502ac6fef2adda1309b439e337c6823de9f4216

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        25KB

        MD5

        1238884c172a47d062af3fc7a8933bd0

        SHA1

        2d7b73c85c90a357f4e3504d83c820f6a13fd195

        SHA256

        5a9ce304129d275700360f29374cb1fc4ede8f66124bea2d1a418307eff35759

        SHA512

        93315faac39a4914a736ea806cd9c28a112fe095800ba56e53ba0888662888f9b7c875db0ebfa49c336077f7b0ae213f582dd2a4d2c5d040c33ab1ec8c014c3d

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        21KB

        MD5

        f537775e473e7ef09eaffb24889df490

        SHA1

        b41031414c7ba6dc3b0f57ee7b84cc9942d06edb

        SHA256

        4672e5a178fc023be578c92ff551ff106837336c596824d3c46f2f48d6e6f798

        SHA512

        49a73992cd501c05b303bf9ff5ade07745c666703f961816ae9238b30e7ed4b51ad1be8d46f932fd9a351be170ce6dcd4a43e5355a29b3824dcae7a777186a70

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

        Filesize

        1KB

        MD5

        b10b13206b0f2cf3968050072f6979bf

        SHA1

        699db21ba9cecf3f13ac3d76e22cfa41aa94da80

        SHA256

        0eef3217095cb97b695c434e74d6314bf9e869a013d6e9c88e58c34576a276b4

        SHA512

        d33bfd931be6676539507a69101d99fa4c5ef36b12422bd11f063b9b6a47b7444f6c4ad5f35e044714fdb872e96cd9fddf049e8329af1219483887f6ac5f4a5d

      • memory/2000-13-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2000-24-0x0000000000360000-0x0000000000371000-memory.dmp

        Filesize

        68KB

      • memory/2000-60-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2000-100-0x0000000000360000-0x0000000000371000-memory.dmp

        Filesize

        68KB

      • memory/2004-0-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2004-11-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2400-25-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB