Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-12-2024 14:26

General

  • Target

    C4I1C_Server.exe

  • Size

    23KB

  • MD5

    1011ca14bd55e56a16a393744aefcc47

  • SHA1

    912b56d8a53e77db250a904c68afb00f39a98429

  • SHA256

    1048b9978e4e8d928c8f5c057c0c1ac6213b4f456b6cf83558e213742f780bea

  • SHA512

    e093b3d79e56691637bf00cf4d1610a3891b7f9501d9874a3ed5fd8f2056a758f6e3270e9435cbe02cf5c2cb37bc07436959d402f76ef11173f93545229d73b3

  • SSDEEP

    384:FweXCQIreJig/8Z7SS1fEBpng6tgL2IBPZVmRvR6JZlbw8hqIusZzZVT:aLq411eRpcnuq

Malware Config

Signatures

  • Njrat family
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • 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
  • 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.

  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\C4I1C_Server.exe
    "C:\Users\Admin\AppData\Local\Temp\C4I1C_Server.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2988
    • C:\Users\Admin\AppData\Local\Temp\server.exe
      "C:\Users\Admin\AppData\Local\Temp\server.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3660
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:1344

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    23KB

    MD5

    1011ca14bd55e56a16a393744aefcc47

    SHA1

    912b56d8a53e77db250a904c68afb00f39a98429

    SHA256

    1048b9978e4e8d928c8f5c057c0c1ac6213b4f456b6cf83558e213742f780bea

    SHA512

    e093b3d79e56691637bf00cf4d1610a3891b7f9501d9874a3ed5fd8f2056a758f6e3270e9435cbe02cf5c2cb37bc07436959d402f76ef11173f93545229d73b3

  • memory/2988-0-0x0000000075452000-0x0000000075453000-memory.dmp

    Filesize

    4KB

  • memory/2988-1-0x0000000075450000-0x0000000075A01000-memory.dmp

    Filesize

    5.7MB

  • memory/2988-2-0x0000000075450000-0x0000000075A01000-memory.dmp

    Filesize

    5.7MB

  • memory/2988-13-0x0000000075450000-0x0000000075A01000-memory.dmp

    Filesize

    5.7MB

  • memory/3660-12-0x0000000075450000-0x0000000075A01000-memory.dmp

    Filesize

    5.7MB

  • memory/3660-14-0x0000000075450000-0x0000000075A01000-memory.dmp

    Filesize

    5.7MB

  • memory/3660-16-0x0000000075450000-0x0000000075A01000-memory.dmp

    Filesize

    5.7MB