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Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/07/2024, 01:36

General

  • Target

    3fb22cfc3e2c18514a65cb7ba37b2210N.exe

  • Size

    68KB

  • MD5

    3fb22cfc3e2c18514a65cb7ba37b2210

  • SHA1

    618e00e1eeff13fca25dadc7fe64f6fa7c1cc114

  • SHA256

    794803db33e0aad8a5e3f76842f7c929ef630a2ef49c7111e5102e6f0837abc0

  • SHA512

    fb74c5d8301ec2729b72c1d4b5dabb36aedff6fa9e95f265c57edcc18c501850570c56f04f517e374e1646b1ce3ce3676c82a0865417b817436b5b1b819ee560

  • SSDEEP

    1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8q:Olg35GTslA5t3/w8q

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.

  • Event Triggered Execution: Image File Execution Options Injection 1 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 9 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:608
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:3444
        • C:\Users\Admin\AppData\Local\Temp\3fb22cfc3e2c18514a65cb7ba37b2210N.exe
          "C:\Users\Admin\AppData\Local\Temp\3fb22cfc3e2c18514a65cb7ba37b2210N.exe"
          2⤵
          • Drops file in System32 directory
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4556
          • C:\Windows\SysWOW64\ufvebef.exe
            "C:\Windows\system32\ufvebef.exe"
            3⤵
            • Windows security bypass
            • Boot or Logon Autostart Execution: Active Setup
            • Event Triggered Execution: Image File Execution Options Injection
            • Executes dropped EXE
            • Windows security modification
            • Modifies WinLogon
            • Drops file in System32 directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1828
            • C:\Windows\SysWOW64\ufvebef.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:2908

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Windows\SysWOW64\evropik.dll

        Filesize

        5KB

        MD5

        f37b21c00fd81bd93c89ce741a88f183

        SHA1

        b2796500597c68e2f5638e1101b46eaf32676c1c

        SHA256

        76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

        SHA512

        252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

      • C:\Windows\SysWOW64\ofposin-obooc.exe

        Filesize

        71KB

        MD5

        32d61c5e803f787339527cb0b0a244d0

        SHA1

        e2464b77d0e7a51135813f327f97b1c63b296399

        SHA256

        564521f789cc2a525c9abf823cc5ba503bb884740ebd36dd667f41af9c24a6ce

        SHA512

        071c0d570b1d2ecb6fc82bd75963ee56bcd38834adf3dc516de8805f629d814cb0a7845677c825c457539bcd4f89875cd86a1c6c4987a339f21f35b39bc9d3a4

      • C:\Windows\SysWOW64\ufvebef.exe

        Filesize

        68KB

        MD5

        3fb22cfc3e2c18514a65cb7ba37b2210

        SHA1

        618e00e1eeff13fca25dadc7fe64f6fa7c1cc114

        SHA256

        794803db33e0aad8a5e3f76842f7c929ef630a2ef49c7111e5102e6f0837abc0

        SHA512

        fb74c5d8301ec2729b72c1d4b5dabb36aedff6fa9e95f265c57edcc18c501850570c56f04f517e374e1646b1ce3ce3676c82a0865417b817436b5b1b819ee560

      • C:\Windows\SysWOW64\ufxirub.exe

        Filesize

        70KB

        MD5

        5c58e4688fec7f006610955c45537f6c

        SHA1

        aaa0d574bdd085e49bf416012fa44459c704d65c

        SHA256

        d6593fb48c288d6820f3adc8f92403bc29a700d88aee2b14d603fd03a59060e6

        SHA512

        6ab97e97a0c45bfbbe28d36db18b68b1d0b61cc5dc5c4c371444f2ebb0df7c04b4c92cc100ebc50e521d49312b0002c8f5f1283e977a94ab8a08a6f85b4e3203

      • memory/1828-49-0x0000000000400000-0x0000000000414000-memory.dmp

        Filesize

        80KB

      • memory/1828-78-0x0000000000400000-0x0000000000414000-memory.dmp

        Filesize

        80KB

      • memory/2908-50-0x0000000000400000-0x0000000000414000-memory.dmp

        Filesize

        80KB

      • memory/4556-10-0x0000000000400000-0x0000000000414000-memory.dmp

        Filesize

        80KB