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Analysis

  • max time kernel
    120s
  • max time network
    115s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/12/2024, 06:00

General

  • Target

    11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.exe

  • Size

    23KB

  • MD5

    8ff0da747c6d0e9870cb9ce91b951160

  • SHA1

    5c645d5eed1c2fa4ce5e9ba4ecc405915a71c579

  • SHA256

    11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191b

  • SHA512

    9cfa1c4e7089903a37eebdefd4303e283cf2b3b19a185b9ca9128c6d7cda3bb3a83ac82815a64dba002bc198c36598473c62db3f4ce6cca45d9e24d1dd54a1fa

  • SSDEEP

    384:4sqS+ER6vRKXGYKRWVSujUtX9w6Dglo61Z5DVmRvR6JZlbw8hqIusZzZpF:vf65K2Yf1jKRpcnuw

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.

  • 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\11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.exe
    "C:\Users\Admin\AppData\Local\Temp\11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3440
    • 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:544
      • 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:4828

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    23KB

    MD5

    8ff0da747c6d0e9870cb9ce91b951160

    SHA1

    5c645d5eed1c2fa4ce5e9ba4ecc405915a71c579

    SHA256

    11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191b

    SHA512

    9cfa1c4e7089903a37eebdefd4303e283cf2b3b19a185b9ca9128c6d7cda3bb3a83ac82815a64dba002bc198c36598473c62db3f4ce6cca45d9e24d1dd54a1fa

  • memory/544-13-0x0000000075500000-0x0000000075AB1000-memory.dmp

    Filesize

    5.7MB

  • memory/544-14-0x0000000075500000-0x0000000075AB1000-memory.dmp

    Filesize

    5.7MB

  • memory/544-15-0x0000000075500000-0x0000000075AB1000-memory.dmp

    Filesize

    5.7MB

  • memory/3440-0-0x0000000075502000-0x0000000075503000-memory.dmp

    Filesize

    4KB

  • memory/3440-1-0x0000000075500000-0x0000000075AB1000-memory.dmp

    Filesize

    5.7MB

  • memory/3440-2-0x0000000075500000-0x0000000075AB1000-memory.dmp

    Filesize

    5.7MB

  • memory/3440-12-0x0000000075500000-0x0000000075AB1000-memory.dmp

    Filesize

    5.7MB