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Analysis

  • max time kernel
    119s
  • max time network
    40s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    25/08/2024, 01:40

General

  • Target

    e07cf71aa11eaba37ecaf5b7caf6b4b0N.exe

  • Size

    44KB

  • MD5

    e07cf71aa11eaba37ecaf5b7caf6b4b0

  • SHA1

    1b987d0916443ee56da185987dc483f2d26fd88d

  • SHA256

    f49585c2301e57fd829eb0ba4f7ad95cccf8ea73f503810f18036de9e3fbe8c4

  • SHA512

    d42555afdfd09de8c7f5e0aaf7061adce9f676014d7785932af999a3dbfde69aa26dd348c7c1769b3c6ca4f9d9919fe1d85e62f880359bcdce5d5afcd178de55

  • SSDEEP

    768:WAUJmQCcmLCXQq6fsKiJYsIkjJVzqsVG5kuGVAQvRWrETR5:RUNHFKQbIkHvGkAzWR5

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
  • Windows security modification 2 TTPs 4 IoCs
  • Indicator Removal: Clear Persistence 1 TTPs 1 IoCs

    remove IFEO.

  • Modifies WinLogon 2 TTPs 5 IoCs
  • Drops file in System32 directory 12 IoCs
  • Drops file in Program Files directory 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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:1200
        • C:\Users\Admin\AppData\Local\Temp\e07cf71aa11eaba37ecaf5b7caf6b4b0N.exe
          "C:\Users\Admin\AppData\Local\Temp\e07cf71aa11eaba37ecaf5b7caf6b4b0N.exe"
          2⤵
          • Loads dropped DLL
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1320
          • 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
            • Indicator Removal: Clear Persistence
            • Modifies WinLogon
            • Drops file in System32 directory
            • Drops file in Program Files directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2516
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:2068

      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

        46KB

        MD5

        6f23ed1a6cca722f8a3850e2dd8a98c3

        SHA1

        1c923200b65331ee643d1f39c03ae32054c68b96

        SHA256

        8a33b5d79858697c06458c232ac5f9d122c6fb134b38e80d054a1b9c95c7f99b

        SHA512

        1a5af89a828ce9aab36a79003130f202d135586242ddb163442b3365c9481630f3de7ef570f96838d90f44b7271d86fec4c017732b0c8dbfbd124344ebd633e1

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        47KB

        MD5

        76465404011692aee7b7b23a0e21f7d8

        SHA1

        507f9c378adc1c3a404da132680eb838a8159ea3

        SHA256

        51a73f50d54f9c2ff9d01d9d4cb60a004fb1dad657335b796d3077365e901276

        SHA512

        b89b19e649f159ac3057f028006dc6a901ec52facdbe28ed6d549f15eac28b2cbc3d0f34c4cadadcb7d7110ac06a037507442d4b3454da74d5b63209a6ce6925

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        44KB

        MD5

        e07cf71aa11eaba37ecaf5b7caf6b4b0

        SHA1

        1b987d0916443ee56da185987dc483f2d26fd88d

        SHA256

        f49585c2301e57fd829eb0ba4f7ad95cccf8ea73f503810f18036de9e3fbe8c4

        SHA512

        d42555afdfd09de8c7f5e0aaf7061adce9f676014d7785932af999a3dbfde69aa26dd348c7c1769b3c6ca4f9d9919fe1d85e62f880359bcdce5d5afcd178de55

      • memory/1320-9-0x0000000000400000-0x000000000040E000-memory.dmp

        Filesize

        56KB

      • memory/2068-53-0x0000000000400000-0x000000000040E000-memory.dmp

        Filesize

        56KB

      • memory/2516-52-0x0000000000400000-0x000000000040E000-memory.dmp

        Filesize

        56KB