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Analysis

  • max time kernel
    117s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    29/09/2024, 19:42

General

  • Target

    Server.exe

  • Size

    93KB

  • MD5

    fccac9bf6c83173de191751a3cc75688

  • SHA1

    5a5f6db3aa85d921707822af7be0f749c00699f6

  • SHA256

    c33fd04b22feb761253055d2674a112d6b527aa3f78e585d1f2d26df3e8512e7

  • SHA512

    db453c4df92e6c274a6e558ed2a95ab4b22d17887dcebaf4760f9e7f2e0d6fc7e2cbe05f4e52690a54414bb466e39f85550535bede6e0979fe7e3499f19c487b

  • SSDEEP

    1536:xkAY3SUFKnOr70txlZbgoGXejEwzGi1dDQDJgS:xkt7KnOr70txIXni1d+G

Malware Config

Signatures

  • Disables Task Manager via registry modification
  • Modifies Windows Firewall 2 TTPs 7 IoCs
  • Deletes itself 1 IoCs
  • Drops startup file 7 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 8 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 4 IoCs
  • Drops file in Program Files 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 21 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 12 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 behavior: GetForegroundWindowSpam 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Drops autorun.inf file
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:3032
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:1200
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe"
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2724
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2696
    • C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2952
      • C:\Users\Admin\AppData\Local\Temp\server.exe
        "C:\Users\Admin\AppData\Local\Temp\server.exe"
        3⤵
        • Drops startup file
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1732
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:2636
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:3064
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:2220
        • C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2092
          • C:\Users\Admin\AppData\Local\Temp\server.exe
            "C:\Users\Admin\AppData\Local\Temp\server.exe"
            5⤵
            • Drops startup file
            • Executes dropped EXE
            • Drops file in System32 directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of WriteProcessMemory
            PID:1788
            • C:\Windows\SysWOW64\netsh.exe
              netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
              6⤵
              • Modifies Windows Firewall
              • Event Triggered Execution: Netsh Helper DLL
              • System Location Discovery: System Language Discovery
              PID:324

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Umbrella.flv.exe

    Filesize

    93KB

    MD5

    fccac9bf6c83173de191751a3cc75688

    SHA1

    5a5f6db3aa85d921707822af7be0f749c00699f6

    SHA256

    c33fd04b22feb761253055d2674a112d6b527aa3f78e585d1f2d26df3e8512e7

    SHA512

    db453c4df92e6c274a6e558ed2a95ab4b22d17887dcebaf4760f9e7f2e0d6fc7e2cbe05f4e52690a54414bb466e39f85550535bede6e0979fe7e3499f19c487b

  • C:\Users\Admin\AppData\Local\Temp\melt.txt

    Filesize

    44B

    MD5

    298802dff6aa26d4fb941c7ccf5c0849

    SHA1

    11e518ca3409f1863ebc2d3f1be9fb701bad52c0

    SHA256

    df99fdbdf7b92b29b1bf1ca4283b4de2e04643b9739d2d1089ab5808e8e5665d

    SHA512

    0301017dfef1b74855d6535f3fd542257689479cb933c2e8742b5b6b94e26107fa38e7fc21bdb83d45184750eced344856092330fb30a1ebbc24b2b9004c8946

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

    Filesize

    5B

    MD5

    112317d572ce0538d2d1b20d7f32170e

    SHA1

    c7f3714c4806b907bcff7f79aa1d1c9373b77d1e

    SHA256

    fd9e9a8be71786826787d6eb9aa28371d09b0515ddf0c19b082fe7bac57a88a9

    SHA512

    265dbebc83c74dc97770e650580b0321144990d133403bab2bc1de4618cde63dfd4fedfa56b5e4e259b510585db0f7a59042c356356c56bea3ac861d4be5337f

  • memory/3032-0-0x0000000074021000-0x0000000074022000-memory.dmp

    Filesize

    4KB

  • memory/3032-1-0x0000000074020000-0x00000000745CB000-memory.dmp

    Filesize

    5.7MB

  • memory/3032-2-0x0000000074020000-0x00000000745CB000-memory.dmp

    Filesize

    5.7MB

  • memory/3032-6-0x0000000074020000-0x00000000745CB000-memory.dmp

    Filesize

    5.7MB

  • memory/3032-45-0x0000000074020000-0x00000000745CB000-memory.dmp

    Filesize

    5.7MB