Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/11/2024, 17:18

General

  • Target
    f22c57c2694ebfc1cc1287301a09f2269171a62fb7f19f11ba7c2485b119986e.exe
  • Size 88KB
  • Sample241102-vvarrstkcr
  • SHA256 f22c57c2694ebfc1cc1287301a09f2269171a62fb7f19f11ba7c2485b119986e
  • MD5 SHA1 SHA512 SSDEEP

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
  • Indicator Removal: Clear Persistence 1 TTPs 1 IoCs

    remove IFEO.

  • Modifies WinLogon 2 TTPs 5 IoCs
  • Drops file in System32 directory 17 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 8 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:620
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:3432
        • C:\Users\Admin\AppData\Local\Temp\f22c57c2694ebfc1cc1287301a09f2269171a62fb7f19f11ba7c2485b119986e.exe
          "C:\Users\Admin\AppData\Local\Temp\f22c57c2694ebfc1cc1287301a09f2269171a62fb7f19f11ba7c2485b119986e.exe"
          2⤵
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:956
          • C:\Windows\SysWOW64\ouvfuveb-eaceab.exe
            "C:\Windows\system32\ouvfuveb-eaceab.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
            • 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:2924
            • C:\Windows\SysWOW64\ouvfuveb-eaceab.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:3524

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            infoatoov.exe

            • Path C:\Windows\SysWOW64\infoatoov.exe
            • Size 91KB
            • SHA256 1de42a05df5c739d23c41ee980679446ee54b813d9046c2a28701c2aecdb4961
            • MD5 SHA1 SHA512 SSDEEP

            ournoanoof-uhoab.dll

            • Path C:\Windows\SysWOW64\ournoanoof-uhoab.dll
            • Size 5KB
            • SHA256 fa8f77b6daf775d66de9d27c1d896168a792057358e518c00e72b8964b966ca5
            • MD5 SHA1 SHA512 SSDEEP

            ouvfuveb-eaceab.exe

            • Path C:\Windows\SysWOW64\ouvfuveb-eaceab.exe
            • Size 88KB
            • SHA256 f22c57c2694ebfc1cc1287301a09f2269171a62fb7f19f11ba7c2485b119986e
            • MD5 SHA1 SHA512 SSDEEP

            ufxucoom.exe

            • Path C:\Windows\SysWOW64\ufxucoom.exe
            • Size 90KB
            • SHA256 f72cb81706562aa00bbea2114905ebb7a2bf37e0d69167cd5eca6db3b430fe81
            • MD5 SHA1 SHA512 SSDEEP

            memory/956-0-0x0000000000400000-0x0000000000418000-memory.dmp

            memory/956-6-0x0000000000400000-0x0000000000418000-memory.dmp

            memory/2924-41-0x0000000000400000-0x0000000000418000-memory.dmp

            memory/3524-47-0x0000000000400000-0x0000000000418000-memory.dmp