Analysis

  • max time kernel
    148s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    13-12-2024 11:01

General

  • Target

    Client.exe

  • Size

    31KB

  • MD5

    eb6401a1d957dce189e9a1ad06f41172

  • SHA1

    ed58fef2021887c89e2c183d648325e5103eb2dd

  • SHA256

    040473f2b73f8947306d2fa9d99c441447026a56ddcdce11720c17be62e000a8

  • SHA512

    9417fb14d0a8eee31fa6d38df314b9842b01365b0e04885f770da02552125e006cdea6de2ae779db616c0247c41406b8c4c00fca8eb6b646c816e50c35230af6

  • SSDEEP

    768:55JEpBZhjzOzx5+R4s/Hu56HdAbiTinvaTQmIDUu0tiEUj:6D6uukAbiT6oQVkwj

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

MyBot

C2

127.0.0.1:6522

Mutex

ba8bb006c6a684a6e6ce01b11f9779df

Attributes
  • reg_key

    ba8bb006c6a684a6e6ce01b11f9779df

  • splitter

    Y262SUCZ4UJJ

Signatures

  • Njrat family
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 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 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2492
    • C:\Users\Admin\AppData\Local\Temp\WindowsServices.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsServices.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2316
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\WindowsServices.exe" "WindowsServices.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2696

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\WindowsServices.exe

    Filesize

    31KB

    MD5

    eb6401a1d957dce189e9a1ad06f41172

    SHA1

    ed58fef2021887c89e2c183d648325e5103eb2dd

    SHA256

    040473f2b73f8947306d2fa9d99c441447026a56ddcdce11720c17be62e000a8

    SHA512

    9417fb14d0a8eee31fa6d38df314b9842b01365b0e04885f770da02552125e006cdea6de2ae779db616c0247c41406b8c4c00fca8eb6b646c816e50c35230af6

  • memory/2316-10-0x0000000074B50000-0x00000000750FB000-memory.dmp

    Filesize

    5.7MB

  • memory/2316-11-0x0000000074B50000-0x00000000750FB000-memory.dmp

    Filesize

    5.7MB

  • memory/2316-14-0x0000000074B50000-0x00000000750FB000-memory.dmp

    Filesize

    5.7MB

  • memory/2492-0-0x0000000074B51000-0x0000000074B52000-memory.dmp

    Filesize

    4KB

  • memory/2492-1-0x0000000074B50000-0x00000000750FB000-memory.dmp

    Filesize

    5.7MB

  • memory/2492-2-0x0000000074B50000-0x00000000750FB000-memory.dmp

    Filesize

    5.7MB

  • memory/2492-12-0x0000000074B50000-0x00000000750FB000-memory.dmp

    Filesize

    5.7MB

  • memory/2492-13-0x0000000074B50000-0x00000000750FB000-memory.dmp

    Filesize

    5.7MB