Analysis

  • max time kernel
    150s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    15-12-2024 05:09

General

  • Target

    9CF8C4A53D5E1C1646B07FD9A20F3DF5.exe

  • Size

    24KB

  • MD5

    9cf8c4a53d5e1c1646b07fd9a20f3df5

  • SHA1

    5b6bf82acb11421e90cede493d99931b750f23cd

  • SHA256

    b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e

  • SHA512

    f21bcb90dfb9db76e09323152ad8bf5bee9f3a07c403e05e4f99efc557a318782a04af2140d73cef0c54f8fc9b3680b4881a2867470ff4fafd1b2f726cab9851

  • SSDEEP

    384:HcqbCK0l4h7o9SVyDGvENuh46/gJkOmMSW38mRvR6JZlbw8hqIusZzZt6bR:830py6vhxaRpcnun1

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

nesck

C2

gfknoux.localto.net:3435

Mutex

fda26501f9b381c7e35e3965cc3cee82

Attributes
  • reg_key

    fda26501f9b381c7e35e3965cc3cee82

  • splitter

    |'|'|

Signatures

  • Njrat family
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\9CF8C4A53D5E1C1646B07FD9A20F3DF5.exe
    "C:\Users\Admin\AppData\Local\Temp\9CF8C4A53D5E1C1646B07FD9A20F3DF5.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Users\Admin\AppData\Local\Temp\wsappx.exe
      "C:\Users\Admin\AppData\Local\Temp\wsappx.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:1224
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\wsappx.exe" "wsappx.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:3068

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    24KB

    MD5

    9cf8c4a53d5e1c1646b07fd9a20f3df5

    SHA1

    5b6bf82acb11421e90cede493d99931b750f23cd

    SHA256

    b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e

    SHA512

    f21bcb90dfb9db76e09323152ad8bf5bee9f3a07c403e05e4f99efc557a318782a04af2140d73cef0c54f8fc9b3680b4881a2867470ff4fafd1b2f726cab9851

  • memory/1224-11-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB

  • memory/1224-14-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB

  • memory/1224-15-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB

  • memory/1736-0-0x0000000074F01000-0x0000000074F02000-memory.dmp

    Filesize

    4KB

  • memory/1736-1-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB

  • memory/1736-2-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB

  • memory/1736-10-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB

  • memory/1736-12-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB