Analysis

  • max time kernel
    150s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-10-2024 23:33

General

  • Target

    Server.exe

  • Size

    37KB

  • MD5

    367587471af9ef8ea4527323895b6466

  • SHA1

    817c50792eabf946846006ebd91322a93a664e45

  • SHA256

    80d6c43e13a4b3d5594b505b15c6d978b5b6bb11a6f1a613dd041f819d399af5

  • SHA512

    0d33e5c9c66a0d99bf29d27a35d7bb3b537bb6b3e0f236172737f416064bd63c5c5b2e4ee625c2c3c6ecef6e9f372a4f89d9d9375fdf2d26f1200999d8d79f1b

  • SSDEEP

    384:FKnraio1n7S5pbpQyEfhqH0f3IYykxarAF+rMRTyN/0L+EcoinblneHQM3epzXJk:MnT3pLEfgH0AlkYrM+rMRa8NufMt

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 file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

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

  • 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.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 38 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4504
    • C:\Windows\server.exe
      "C:\Windows\server.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2808
      • 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
        • System Location Discovery: System Language Discovery
        PID:952
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1648
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
      PID:3364

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\server.exe.log

      Filesize

      319B

      MD5

      da4fafeffe21b7cb3a8c170ca7911976

      SHA1

      50ef77e2451ab60f93f4db88325b897d215be5ad

      SHA256

      7341a4a13e81cbb5b7f39ec47bb45f84836b08b8d8e3ea231d2c7dad982094f7

      SHA512

      0bc24b69460f31a0ebc0628b99908d818ee85feb7e4b663271d9375b30cced0cd55a0bbf8edff1281a4c886ddf4476ffc989c283069cdcb1235ffcb265580fc6

    • C:\Windows\server.exe

      Filesize

      37KB

      MD5

      367587471af9ef8ea4527323895b6466

      SHA1

      817c50792eabf946846006ebd91322a93a664e45

      SHA256

      80d6c43e13a4b3d5594b505b15c6d978b5b6bb11a6f1a613dd041f819d399af5

      SHA512

      0d33e5c9c66a0d99bf29d27a35d7bb3b537bb6b3e0f236172737f416064bd63c5c5b2e4ee625c2c3c6ecef6e9f372a4f89d9d9375fdf2d26f1200999d8d79f1b

    • memory/1648-26-0x0000026115EA0000-0x0000026115EA1000-memory.dmp

      Filesize

      4KB

    • memory/1648-24-0x0000026115EA0000-0x0000026115EA1000-memory.dmp

      Filesize

      4KB

    • memory/1648-22-0x0000026115EA0000-0x0000026115EA1000-memory.dmp

      Filesize

      4KB

    • memory/1648-17-0x0000026115EA0000-0x0000026115EA1000-memory.dmp

      Filesize

      4KB

    • memory/1648-16-0x0000026115EA0000-0x0000026115EA1000-memory.dmp

      Filesize

      4KB

    • memory/1648-15-0x0000026115EA0000-0x0000026115EA1000-memory.dmp

      Filesize

      4KB

    • memory/1648-21-0x0000026115EA0000-0x0000026115EA1000-memory.dmp

      Filesize

      4KB

    • memory/1648-27-0x0000026115EA0000-0x0000026115EA1000-memory.dmp

      Filesize

      4KB

    • memory/1648-23-0x0000026115EA0000-0x0000026115EA1000-memory.dmp

      Filesize

      4KB

    • memory/1648-25-0x0000026115EA0000-0x0000026115EA1000-memory.dmp

      Filesize

      4KB

    • memory/2808-13-0x0000000074A30000-0x0000000074FE1000-memory.dmp

      Filesize

      5.7MB

    • memory/2808-29-0x0000000074A30000-0x0000000074FE1000-memory.dmp

      Filesize

      5.7MB

    • memory/4504-14-0x0000000074A30000-0x0000000074FE1000-memory.dmp

      Filesize

      5.7MB

    • memory/4504-0-0x0000000074A32000-0x0000000074A33000-memory.dmp

      Filesize

      4KB

    • memory/4504-2-0x0000000074A30000-0x0000000074FE1000-memory.dmp

      Filesize

      5.7MB

    • memory/4504-1-0x0000000074A30000-0x0000000074FE1000-memory.dmp

      Filesize

      5.7MB