Analysis

  • max time kernel
    119s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    03-11-2024 05:41

General

  • Target

    c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe

  • Size

    23KB

  • MD5

    ff2c4f921fab4f4900acb9c9fecb6ec0

  • SHA1

    e385387ead5c0f7c626de00fb716dea1c6e8e9e3

  • SHA256

    c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366

  • SHA512

    5a34cf6ad696b41e8b0d3d2272c214673ed5ed1aa0c6560793bcb4a2cc6646c8d8d419a557a7a4a46e2f2447568110b3cd9aaa36737d6061e6653ebbeee38e8e

  • SSDEEP

    384:kslUlEvOEJ8xWwYJOMiOBZEdj1567gtwi5HhbQmRvR6JZlbw8hqIusZzZif:teEvwIlLMRpcnuH

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

192.168.1.5:5552

Mutex

7c2c57ac23031a96b734c5b4f1cc3f93

Attributes
  • reg_key

    7c2c57ac23031a96b734c5b4f1cc3f93

  • splitter

    |'|'|

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
  • 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 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe
    "C:\Users\Admin\AppData\Local\Temp\c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2612
    • 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:2792
      • 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:2796

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    23KB

    MD5

    ff2c4f921fab4f4900acb9c9fecb6ec0

    SHA1

    e385387ead5c0f7c626de00fb716dea1c6e8e9e3

    SHA256

    c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366

    SHA512

    5a34cf6ad696b41e8b0d3d2272c214673ed5ed1aa0c6560793bcb4a2cc6646c8d8d419a557a7a4a46e2f2447568110b3cd9aaa36737d6061e6653ebbeee38e8e

  • memory/2612-0-0x0000000074C81000-0x0000000074C82000-memory.dmp

    Filesize

    4KB

  • memory/2612-1-0x0000000074C80000-0x000000007522B000-memory.dmp

    Filesize

    5.7MB

  • memory/2612-2-0x0000000074C80000-0x000000007522B000-memory.dmp

    Filesize

    5.7MB

  • memory/2612-11-0x0000000074C80000-0x000000007522B000-memory.dmp

    Filesize

    5.7MB

  • memory/2792-12-0x0000000074C80000-0x000000007522B000-memory.dmp

    Filesize

    5.7MB

  • memory/2792-10-0x0000000074C80000-0x000000007522B000-memory.dmp

    Filesize

    5.7MB

  • memory/2792-13-0x0000000074C80000-0x000000007522B000-memory.dmp

    Filesize

    5.7MB