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
    02-12-2024 07:15

General

  • Target

    7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013.exe

  • Size

    100KB

  • MD5

    1ad9fb5ac8252ec450cb4f70111fb6fe

  • SHA1

    70ac8b252e67f0363c7f64e780018a45cf7d24ed

  • SHA256

    7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013

  • SHA512

    df40c71d839d5b1a73b047d5cad2b3b417e755554ddb8dd5b3ba634f5ea27c1ed9ed05262cde4b63516ed32a94ed1ca129dfdfdc777e4f7e80151c0c5947be19

  • SSDEEP

    1536:JMoIfhO5PNZ4BkSQB68QJRlrNw+ZnIwk0+Be4X2EWpD7oi1VO+/t6Fk:+o2GNZMI8Rl5wyIwk79/sl8Fk

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

VICTIME2014b

C2

crazymaha.zapto.org:8181

Mutex

73fc908b8a1feca480a20b452ef82fcc

Attributes
  • reg_key

    73fc908b8a1feca480a20b452ef82fcc

  • 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.

  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013.exe
    "C:\Users\Admin\AppData\Local\Temp\7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:680
    • C:\Users\Admin\AppData\Local\Temp\taskmgr.exe
      "C:\Users\Admin\AppData\Local\Temp\taskmgr.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1944
      • C:\Windows\SYSTEM32\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\taskmgr.exe" "taskmgr.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:2968

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    100KB

    MD5

    1ad9fb5ac8252ec450cb4f70111fb6fe

    SHA1

    70ac8b252e67f0363c7f64e780018a45cf7d24ed

    SHA256

    7bb924304ad92bca823a2552d44cb54d9c8a4a92dba535d56f715720fcc92013

    SHA512

    df40c71d839d5b1a73b047d5cad2b3b417e755554ddb8dd5b3ba634f5ea27c1ed9ed05262cde4b63516ed32a94ed1ca129dfdfdc777e4f7e80151c0c5947be19

  • memory/680-3-0x000000001B6F0000-0x000000001B796000-memory.dmp

    Filesize

    664KB

  • memory/680-1-0x0000000001100000-0x000000000110C000-memory.dmp

    Filesize

    48KB

  • memory/680-0-0x00007FF99DC15000-0x00007FF99DC16000-memory.dmp

    Filesize

    4KB

  • memory/680-4-0x000000001BC70000-0x000000001C13E000-memory.dmp

    Filesize

    4.8MB

  • memory/680-5-0x00007FF99D960000-0x00007FF99E301000-memory.dmp

    Filesize

    9.6MB

  • memory/680-2-0x00007FF99D960000-0x00007FF99E301000-memory.dmp

    Filesize

    9.6MB

  • memory/680-20-0x00007FF99D960000-0x00007FF99E301000-memory.dmp

    Filesize

    9.6MB

  • memory/1944-18-0x00007FF99D960000-0x00007FF99E301000-memory.dmp

    Filesize

    9.6MB

  • memory/1944-19-0x00007FF99D960000-0x00007FF99E301000-memory.dmp

    Filesize

    9.6MB

  • memory/1944-21-0x000000001C260000-0x000000001C2FC000-memory.dmp

    Filesize

    624KB

  • memory/1944-22-0x0000000000F70000-0x0000000000F78000-memory.dmp

    Filesize

    32KB

  • memory/1944-23-0x00007FF99D960000-0x00007FF99E301000-memory.dmp

    Filesize

    9.6MB