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Analysis

  • max time kernel
    120s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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
  • 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 3 IoCs

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

  • 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:3332
        • C:\Users\Admin\AppData\Local\Temp\e07cf71aa11eaba37ecaf5b7caf6b4b0N.exe
          "C:\Users\Admin\AppData\Local\Temp\e07cf71aa11eaba37ecaf5b7caf6b4b0N.exe"
          2⤵
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3032
          • 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
            • 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:4420
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:3800

      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

        dee6689d37bffca2beffaff790098531

        SHA1

        5bab96fb90a82ba7d30b636b41dee6de4b322bb7

        SHA256

        39a78e7403282566ca954377ad3ad11d5df7bab33de13d428afd7dda25972281

        SHA512

        9ee4d6e7d88da64f129cc3df03f54e76d8128eaf3a43dfb9eb1cbb1a3d849e303dbd73f1aa24a7c85416ddedcea0d894fb486ae0cfb86e29cb14c19784222d01

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        47KB

        MD5

        f792e4b4bad657a86b9f11f879291ec5

        SHA1

        2e8930071c4b42198747a62266f3e4965a0de2fa

        SHA256

        fa7334a7a3c02cb5db9e5e326db8dfc271ca0833889da487c91ccd81ab33a369

        SHA512

        b1b04783ffc86d2fd0f839bc8b06cbb822b09883b0fb7b99e9f3b2d8707e3d08417aad1f12e223c949bbdbb9615602f0857810a94153d74da450926328a35a65

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        44KB

        MD5

        e07cf71aa11eaba37ecaf5b7caf6b4b0

        SHA1

        1b987d0916443ee56da185987dc483f2d26fd88d

        SHA256

        f49585c2301e57fd829eb0ba4f7ad95cccf8ea73f503810f18036de9e3fbe8c4

        SHA512

        d42555afdfd09de8c7f5e0aaf7061adce9f676014d7785932af999a3dbfde69aa26dd348c7c1769b3c6ca4f9d9919fe1d85e62f880359bcdce5d5afcd178de55

      • memory/3032-5-0x0000000000400000-0x000000000040E000-memory.dmp

        Filesize

        56KB

      • memory/3800-47-0x0000000000400000-0x000000000040E000-memory.dmp

        Filesize

        56KB

      • memory/4420-46-0x0000000000400000-0x000000000040E000-memory.dmp

        Filesize

        56KB