Analysis

  • max time kernel
    120s
  • max time network
    114s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-12-2024 10:36

General

  • Target

    f782b67a7c1d4504d282bbabca3bfff4dcb14b989225695b8a80e0aedc3a9953N.exe

  • Size

    94KB

  • MD5

    2086ab4be1e7ec95fa9ccf40895986e0

  • SHA1

    3d877603fbdb832bc59af3700547e27d7a34f9f3

  • SHA256

    f782b67a7c1d4504d282bbabca3bfff4dcb14b989225695b8a80e0aedc3a9953

  • SHA512

    88b9730600ed98466e620537aa0f04eed23bcf8f4b7b6bb55eafaea68d727bfdc23e62a780b636078f9c5223eb85a0d21bfb2ec78742d71ad9a8105e4a507a9a

  • SSDEEP

    1536:ToCHfmQnPG8baRYX2Nb5sVo/wgTedTK+ueIS5bhUjnPWyJhDNWcb5t4U9tj8MYuS:ToktPG8baRYX2N9HTA3YVhD55/tQG

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

jh34j4h34h.ddns.net:1177

Mutex

4a8f2ff0614688c198a022511337d8fb

Attributes
  • reg_key

    4a8f2ff0614688c198a022511337d8fb

  • splitter

    |'|'|

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.

  • 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 27 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f782b67a7c1d4504d282bbabca3bfff4dcb14b989225695b8a80e0aedc3a9953N.exe
    "C:\Users\Admin\AppData\Local\Temp\f782b67a7c1d4504d282bbabca3bfff4dcb14b989225695b8a80e0aedc3a9953N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4352
    • C:\Users\Admin\AppData\Local\Temp\server.exe
      "C:\Users\Admin\AppData\Local\Temp\server.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3096
      • 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:3888
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4352 -ip 4352
    1⤵
      PID:2740

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      94KB

      MD5

      2086ab4be1e7ec95fa9ccf40895986e0

      SHA1

      3d877603fbdb832bc59af3700547e27d7a34f9f3

      SHA256

      f782b67a7c1d4504d282bbabca3bfff4dcb14b989225695b8a80e0aedc3a9953

      SHA512

      88b9730600ed98466e620537aa0f04eed23bcf8f4b7b6bb55eafaea68d727bfdc23e62a780b636078f9c5223eb85a0d21bfb2ec78742d71ad9a8105e4a507a9a

    • memory/3096-29-0x0000000074A60000-0x0000000075210000-memory.dmp

      Filesize

      7.7MB

    • memory/3096-28-0x0000000074A60000-0x0000000075210000-memory.dmp

      Filesize

      7.7MB

    • memory/3096-27-0x0000000074A60000-0x0000000075210000-memory.dmp

      Filesize

      7.7MB

    • memory/3096-26-0x0000000074A60000-0x0000000075210000-memory.dmp

      Filesize

      7.7MB

    • memory/3096-24-0x0000000074A60000-0x0000000075210000-memory.dmp

      Filesize

      7.7MB

    • memory/3096-22-0x0000000074A60000-0x0000000075210000-memory.dmp

      Filesize

      7.7MB

    • memory/4352-8-0x0000000074A60000-0x0000000075210000-memory.dmp

      Filesize

      7.7MB

    • memory/4352-0-0x0000000074A6E000-0x0000000074A6F000-memory.dmp

      Filesize

      4KB

    • memory/4352-9-0x0000000005320000-0x000000000532C000-memory.dmp

      Filesize

      48KB

    • memory/4352-7-0x0000000074A60000-0x0000000075210000-memory.dmp

      Filesize

      7.7MB

    • memory/4352-6-0x0000000005100000-0x0000000005156000-memory.dmp

      Filesize

      344KB

    • memory/4352-23-0x0000000074A6E000-0x0000000074A6F000-memory.dmp

      Filesize

      4KB

    • memory/4352-5-0x0000000004F40000-0x0000000004F4A000-memory.dmp

      Filesize

      40KB

    • memory/4352-25-0x0000000074A60000-0x0000000075210000-memory.dmp

      Filesize

      7.7MB

    • memory/4352-4-0x0000000005000000-0x0000000005092000-memory.dmp

      Filesize

      584KB

    • memory/4352-3-0x00000000055B0000-0x0000000005B54000-memory.dmp

      Filesize

      5.6MB

    • memory/4352-2-0x0000000004F60000-0x0000000004FFC000-memory.dmp

      Filesize

      624KB

    • memory/4352-1-0x0000000000540000-0x0000000000560000-memory.dmp

      Filesize

      128KB