Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    12-01-2025 21:46

General

  • Target

    41b7e09608ef2fccf2483d2123a67b0f.exe

  • Size

    52KB

  • MD5

    41b7e09608ef2fccf2483d2123a67b0f

  • SHA1

    0bd1e8b13c2e138c0016272f62fb7dbccac57eb4

  • SHA256

    a796d7e512558cf1de868e996dd8ef7651956fe71e8c84063986d801098120d6

  • SHA512

    b7df2cc1aa5cf81936144a3ea62b7404e14651c5cb2fcbf2fee416d22db514601edf1e38ce75a07c0bbe869ee01ef63e20f7e3b84b7db8120fc66b4841f22ea1

  • SSDEEP

    768:+LdGdkryy3i+wLrM+rMRa8NuAGt5pFA3:+LdGyeyyJU+gRJNz

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

NHZxReports

C2

147.50.253.6:9997

Mutex

9958061a0028ef3328b60cdcfe513c98

Attributes
  • reg_key

    9958061a0028ef3328b60cdcfe513c98

  • 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
  • Drops autorun.inf file 1 TTPs 5 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • 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 behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41b7e09608ef2fccf2483d2123a67b0f.exe
    "C:\Users\Admin\AppData\Local\Temp\41b7e09608ef2fccf2483d2123a67b0f.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\Users\Admin\AppData\Local\Temp\NHZxReports.exe
      "C:\Users\Admin\AppData\Local\Temp\NHZxReports.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops autorun.inf file
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2296
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\NHZxReports.exe" "NHZxReports.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2832

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    52KB

    MD5

    41b7e09608ef2fccf2483d2123a67b0f

    SHA1

    0bd1e8b13c2e138c0016272f62fb7dbccac57eb4

    SHA256

    a796d7e512558cf1de868e996dd8ef7651956fe71e8c84063986d801098120d6

    SHA512

    b7df2cc1aa5cf81936144a3ea62b7404e14651c5cb2fcbf2fee416d22db514601edf1e38ce75a07c0bbe869ee01ef63e20f7e3b84b7db8120fc66b4841f22ea1

  • memory/536-0-0x0000000074841000-0x0000000074842000-memory.dmp

    Filesize

    4KB

  • memory/536-1-0x0000000074840000-0x0000000074DEB000-memory.dmp

    Filesize

    5.7MB

  • memory/536-2-0x0000000074840000-0x0000000074DEB000-memory.dmp

    Filesize

    5.7MB

  • memory/536-10-0x0000000074840000-0x0000000074DEB000-memory.dmp

    Filesize

    5.7MB

  • memory/2296-11-0x0000000074840000-0x0000000074DEB000-memory.dmp

    Filesize

    5.7MB

  • memory/2296-12-0x0000000074840000-0x0000000074DEB000-memory.dmp

    Filesize

    5.7MB

  • memory/2296-13-0x0000000074840000-0x0000000074DEB000-memory.dmp

    Filesize

    5.7MB

  • memory/2296-23-0x0000000074840000-0x0000000074DEB000-memory.dmp

    Filesize

    5.7MB