Analysis

  • max time kernel
    149s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    14-06-2024 04:35

General

  • Target

    d653fac296997214eb2b59e5077fbe5c414e3bfd3c66dfbfee378ad2f3c75d86.exe

  • Size

    73KB

  • MD5

    ac28c2506b65cb361235bbd865300468

  • SHA1

    7a3c782663b61a4d42101df0dec0191e1f51001d

  • SHA256

    d653fac296997214eb2b59e5077fbe5c414e3bfd3c66dfbfee378ad2f3c75d86

  • SHA512

    75a980250886065070a1b8b8d07a7f18cec0f3d1f0df760a75b3edad83d00005f005ee09b1cb42f634c4be2ae40c66d41947c67d5e59edef6b236804a9bc8aa3

  • SSDEEP

    1536:xU9NVM6oqQg9lOkOYmxCibH6n2VY7WMezC:e9NVDvlOrjxH6IYKMem

Malware Config

Signatures

  • Windows security bypass 2 TTPs 4 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
  • Windows security modification 2 TTPs 4 IoCs
  • Modifies WinLogon 2 TTPs 5 IoCs
  • Drops file in System32 directory 9 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:436
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1192
        • C:\Users\Admin\AppData\Local\Temp\d653fac296997214eb2b59e5077fbe5c414e3bfd3c66dfbfee378ad2f3c75d86.exe
          "C:\Users\Admin\AppData\Local\Temp\d653fac296997214eb2b59e5077fbe5c414e3bfd3c66dfbfee378ad2f3c75d86.exe"
          2⤵
          • Loads dropped DLL
          • Drops file in System32 directory
          • Suspicious use of WriteProcessMemory
          PID:1896
          • C:\WINDOWS\SysWOW64\etcucos.exe
            "C:\WINDOWS\SysWOW64\etcucos.exe"
            3⤵
            • Windows security bypass
            • 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
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2824
            • C:\WINDOWS\SysWOW64\etcucos.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:2872

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Windows\SysWOW64\oukroocoos.dll

        Filesize

        5KB

        MD5

        f37b21c00fd81bd93c89ce741a88f183

        SHA1

        b2796500597c68e2f5638e1101b46eaf32676c1c

        SHA256

        76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

        SHA512

        252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

      • C:\Windows\SysWOW64\oxteatut.exe

        Filesize

        74KB

        MD5

        59fad3774f3da89504cdab9c73e79c81

        SHA1

        0dd80d48a9cb05fd47890ea872b158eda383cc95

        SHA256

        bbda394c279036cce252b6cda5a9f27ff4060689087f625bb79174748657912e

        SHA512

        9c81ce6d725cccecfee9682fbab55a038f0752f86d4ab4a4d3d49425c45dce704ce6be15d8e554510b4bdae940e2b8793c9af4d2003fa3dcccbe4d303f1fb255

      • C:\Windows\SysWOW64\ummoarob.exe

        Filesize

        73KB

        MD5

        31a1a415b59042460c9833946a1ac29c

        SHA1

        88c1d7006993d1cf7297cdee531ba6ac1bc97e74

        SHA256

        3209700e0bbb79f2bd969d6f88bae52af667f7ff522576b5855778003a2bf5dc

        SHA512

        fb6ad7b18caf50815d2f1b5d08e01dd5cf1cbf27ee6fe23e0b9c9bcc75fc899a79e6d28886ebabe692908445686c0922814a032cda939894e1276e87ff712223

      • \Windows\SysWOW64\etcucos.exe

        Filesize

        71KB

        MD5

        714728387675b76543e187d1d6863940

        SHA1

        80096027d69a6f2abad63ed3ce81b4d35f2eb1bb

        SHA256

        2ce3773113d1a8b9341e16590c83dc96128727c38d45880de7b98112d6204e63

        SHA512

        fd7972c99d901d8e340b9896807036fb6014fc80851307c777467ffdf05ed967a02b675e421ac3c0aed846fa92a703321c7acf7a8db959541c9195a1f96d0206

      • memory/1896-7-0x0000000000400000-0x0000000000403000-memory.dmp

        Filesize

        12KB

      • memory/2824-53-0x0000000000400000-0x0000000000414000-memory.dmp

        Filesize

        80KB

      • memory/2872-54-0x0000000000400000-0x0000000000414000-memory.dmp

        Filesize

        80KB