Analysis

  • max time kernel
    149s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-06-2024 01:19

General

  • Target

    a9a39d5e0784353926e00fba08fffd809e9fa566b9f3fe359ecc4cc37e3361f3.exe

  • Size

    45KB

  • MD5

    7f480131bb7fe36b0fa59fe13e955a16

  • SHA1

    25d88182d2c2f06aa92bf7af2c5b55f57bbd1970

  • SHA256

    a9a39d5e0784353926e00fba08fffd809e9fa566b9f3fe359ecc4cc37e3361f3

  • SHA512

    9effdf9abca09f659f2fc7567900d08ebb7bc0931feb76116e57a7cbfb1287f6402e69cc83ea82759095f598514b0e88782ee708024cab8a692260964b0c745d

  • SSDEEP

    768:WAUJmQCcmLCXQq6fsKiJYsIkjJVzqsVG5kuGVAQvKMb7r6:RUNHFKQbIkHvGkAFu7e

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
  • 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:624
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:3524
        • C:\Users\Admin\AppData\Local\Temp\a9a39d5e0784353926e00fba08fffd809e9fa566b9f3fe359ecc4cc37e3361f3.exe
          "C:\Users\Admin\AppData\Local\Temp\a9a39d5e0784353926e00fba08fffd809e9fa566b9f3fe359ecc4cc37e3361f3.exe"
          2⤵
          • Drops file in System32 directory
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4908
          • 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:4868
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:764
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4164,i,13281073920029625837,8253721632651544158,262144 --variations-seed-version --mojo-platform-channel-handle=4464 /prefetch:8
        1⤵
          PID:1552

        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

          47KB

          MD5

          119e2a8f94de3b25b40ca9dae7ece70e

          SHA1

          8362f9013d93955851e91aa6e51762480ee311f8

          SHA256

          68478d3697e2c31f406a7c41b67782bdc33dcea8e76f6879c5c8b7416ad84047

          SHA512

          be61b4ea0913549c77f693723b63293b13a14ad921868868b4e7760f208fbd94b6f3b985863cfba3fed2fbd5a43458ce873e50192b1ccbfc0e9c70d4944a578e

        • C:\Windows\SysWOW64\ntdbg.exe

          Filesize

          48KB

          MD5

          fed0d992c6b4e158cf9223856eda9358

          SHA1

          ccac8e2e95ff6962fcfda21300738d16dc75746b

          SHA256

          7d26f627886ee4c2304aa86aa503fe9fcf5d2e069a877bf374061582c22aef22

          SHA512

          f8798f5cfa5cfb1bda6556d2a5ec73092f82fb0e6b78cedc31136b780e8f58dc3d7b599e19fb9744cb672e033d3b913e4ea1bd2245ad561f64567495ff9a83d8

        • C:\Windows\SysWOW64\rmass.exe

          Filesize

          45KB

          MD5

          7f480131bb7fe36b0fa59fe13e955a16

          SHA1

          25d88182d2c2f06aa92bf7af2c5b55f57bbd1970

          SHA256

          a9a39d5e0784353926e00fba08fffd809e9fa566b9f3fe359ecc4cc37e3361f3

          SHA512

          9effdf9abca09f659f2fc7567900d08ebb7bc0931feb76116e57a7cbfb1287f6402e69cc83ea82759095f598514b0e88782ee708024cab8a692260964b0c745d

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

          Filesize

          1KB

          MD5

          6f47b62de25d1745e296a06b3f98ed19

          SHA1

          a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f

          SHA256

          15c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4

          SHA512

          dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7

        • memory/764-50-0x0000000000400000-0x000000000040E000-memory.dmp

          Filesize

          56KB

        • memory/4868-49-0x0000000000400000-0x000000000040E000-memory.dmp

          Filesize

          56KB

        • memory/4908-6-0x0000000000400000-0x000000000040E000-memory.dmp

          Filesize

          56KB