Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-05-2024 16:45

General

  • Target

    Server3.exe

  • Size

    37KB

  • MD5

    9572900a67ed67c643c7298b951d2104

  • SHA1

    e3b7291e39cafe608ffbeadba8135658d22dde2f

  • SHA256

    b9418ffff1fdc91b3257ef2c42e6edc1605b38f2534e93c4f487a72f98279496

  • SHA512

    07a115cfb2d5a97f06a10740c1e0f5ef9fb13bb248e6fbf1d7a815fe7139d7d499d4dfc638fe6544012bfa27b324535487b8446234edd4480e0b0446f8f22173

  • SSDEEP

    384:rkc6ikDRxdDsyNyyszPIRPr28msD+rAF+rMRTyN/0L+EcoinblneHQM3epzXoNC/:ADeyNBszPIRy1sqrM+rMRa8NuKgt

Score
8/10

Malware Config

Signatures

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops autorun.inf file 1 TTPs 5 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server3.exe
    "C:\Users\Admin\AppData\Local\Temp\Server3.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1396
    • C:\Users\Admin\AppData\Local\Temp\Windows.exe
      "C:\Users\Admin\AppData\Local\Temp\Windows.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops autorun.inf file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1616
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Windows.exe" "Windows.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1968
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /F /IM Exsample.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3496

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Windows.exe

    Filesize

    37KB

    MD5

    9572900a67ed67c643c7298b951d2104

    SHA1

    e3b7291e39cafe608ffbeadba8135658d22dde2f

    SHA256

    b9418ffff1fdc91b3257ef2c42e6edc1605b38f2534e93c4f487a72f98279496

    SHA512

    07a115cfb2d5a97f06a10740c1e0f5ef9fb13bb248e6fbf1d7a815fe7139d7d499d4dfc638fe6544012bfa27b324535487b8446234edd4480e0b0446f8f22173

  • memory/1396-0-0x0000000074A72000-0x0000000074A73000-memory.dmp

    Filesize

    4KB

  • memory/1396-1-0x0000000074A70000-0x0000000075021000-memory.dmp

    Filesize

    5.7MB

  • memory/1396-2-0x0000000074A70000-0x0000000075021000-memory.dmp

    Filesize

    5.7MB

  • memory/1396-12-0x0000000074A70000-0x0000000075021000-memory.dmp

    Filesize

    5.7MB

  • memory/1616-13-0x0000000074A70000-0x0000000075021000-memory.dmp

    Filesize

    5.7MB

  • memory/1616-14-0x0000000074A70000-0x0000000075021000-memory.dmp

    Filesize

    5.7MB

  • memory/1616-24-0x0000000074A70000-0x0000000075021000-memory.dmp

    Filesize

    5.7MB