Analysis

  • max time kernel
    210s
  • max time network
    208s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-06-2024 21:14

General

  • Target

    Server33.exe

  • Size

    93KB

  • MD5

    5836adbf5699fe6dc7e27d695881f99f

  • SHA1

    7283570b5b5485ea614926acab4a9138d55edd5d

  • SHA256

    94baaf372f566bc6ffa2c24a952b3f4dda94f29c031b95cfcfba96862206b5a7

  • SHA512

    5431a6328f6eed65d252f2bf91b441400777ad976d57127c08c36f63b2350eb23803f819191099e29a8adeee53de219b6a11f5c7eecffbb9c22944540beee189

  • SSDEEP

    1536:wOYYW6qbkW8aVpO1ARkoojEwzGi1dDPDjgS:wOM8aVpOWSCi1dvc

Malware Config

Signatures

  • Modifies Windows Firewall 2 TTPs 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops autorun.inf file 1 TTPs 4 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 9 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server33.exe
    "C:\Users\Admin\AppData\Local\Temp\Server33.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:704
    • C:\Windows\server.exe
      "C:\Windows\server.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Drops autorun.inf file
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3484
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:4180
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall delete allowedprogram "C:\Windows\server.exe"
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:964
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:3488

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\app

    Filesize

    5B

    MD5

    d43c5b07c128b116b7bc8faf7b8efa9d

    SHA1

    dd3540ad4ae14b21b665d108cf4570c2dfa6a6fa

    SHA256

    80ad1cc7b3a784dad618a445af0c8cf3efa903f82a814756f2aaa7b57f45791f

    SHA512

    618b01e2b808e1954d011635dfdf63bc75855145208fc5cae33ce09c7e5b43cf978f6511beb311765e6920e728a290c9f9ced7563e40e8ff8d093d50fdc18334

  • C:\Windows\server.exe

    Filesize

    93KB

    MD5

    5836adbf5699fe6dc7e27d695881f99f

    SHA1

    7283570b5b5485ea614926acab4a9138d55edd5d

    SHA256

    94baaf372f566bc6ffa2c24a952b3f4dda94f29c031b95cfcfba96862206b5a7

    SHA512

    5431a6328f6eed65d252f2bf91b441400777ad976d57127c08c36f63b2350eb23803f819191099e29a8adeee53de219b6a11f5c7eecffbb9c22944540beee189

  • memory/704-0-0x0000000074852000-0x0000000074853000-memory.dmp

    Filesize

    4KB

  • memory/704-1-0x0000000074850000-0x0000000074E01000-memory.dmp

    Filesize

    5.7MB

  • memory/704-2-0x0000000074850000-0x0000000074E01000-memory.dmp

    Filesize

    5.7MB

  • memory/704-14-0x0000000074850000-0x0000000074E01000-memory.dmp

    Filesize

    5.7MB

  • memory/3484-13-0x0000000074850000-0x0000000074E01000-memory.dmp

    Filesize

    5.7MB

  • memory/3484-15-0x0000000074850000-0x0000000074E01000-memory.dmp

    Filesize

    5.7MB

  • memory/3484-53-0x0000000074850000-0x0000000074E01000-memory.dmp

    Filesize

    5.7MB

  • memory/3484-54-0x0000000074850000-0x0000000074E01000-memory.dmp

    Filesize

    5.7MB