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Analysis

  • max time kernel
    144s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04/12/2024, 06:07

General

  • Target

    7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe

  • Size

    1.2MB

  • MD5

    0892da2c8fbf043ae276100f9c7ec8ba

  • SHA1

    7237c52c96efcfa0105f0cdaf37245f0b29685de

  • SHA256

    7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708

  • SHA512

    c547262992a16e873c39997f6e892d0959474efc78d99330160fa82621a732f297100fe73ecb3d520e4053087bbd9428f11be695d8f83c02a08be3dd010bc77e

  • SSDEEP

    24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95G:Jh+ZkldoPK8YaW7CaZ7IHG

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

redlanhopto

C2

redlan.hopto.org:5553

Mutex

d25d360449d7bab3069e1b77b3a914a3

Attributes
  • reg_key

    d25d360449d7bab3069e1b77b3a914a3

  • splitter

    |'|'|

Signatures

  • Njrat family
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 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 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 27 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
    "C:\Users\Admin\AppData\Local\Temp\7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2468
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2960
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe" "RegAsm.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2652
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\SysWOW64\schtasks.exe" /create /tn igfxHK /tr "C:\Users\Admin\AppData\Roaming\chkdsk\data.exe" /sc minute /mo 1 /F
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2448
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {236E3398-68D0-4E09-92FE-6442191E8A5A} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2032
    • C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
      C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:712
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1504
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\SysWOW64\schtasks.exe" /create /tn igfxHK /tr "C:\Users\Admin\AppData\Roaming\chkdsk\data.exe" /sc minute /mo 1 /F
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1508

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\chkdsk\data.exe

    Filesize

    1.2MB

    MD5

    b1cc65705a46a069a40af6979ef1dad8

    SHA1

    fe13287e16ff07bdbf80244e8e7eb948658fe3bf

    SHA256

    c9b36c8f61f8ee135b6dcfa83d65b47b588f3460f65bdde655ac64e332d9ef5f

    SHA512

    15d03d4528db3ea248399b66f5325ea29652d5f3ae5cdc760de3c4e5836d5b9598fcd3238375cec51d54bb574ea584187d6c11a34cccc27a03081064b43a5502

  • memory/2468-0-0x0000000000260000-0x0000000000261000-memory.dmp

    Filesize

    4KB

  • memory/2960-2-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2960-1-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2960-9-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2960-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2960-8-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2960-10-0x0000000073CC2000-0x0000000073CC4000-memory.dmp

    Filesize

    8KB

  • memory/2960-11-0x0000000073CC2000-0x0000000073CC4000-memory.dmp

    Filesize

    8KB