Resubmissions

26-02-2024 18:40

240226-xbebysdf4z 10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    26-02-2024 18:40

General

  • Target

    a70f39e314acb6cea65107b7bcb78272.exe

  • Size

    212KB

  • MD5

    a70f39e314acb6cea65107b7bcb78272

  • SHA1

    9cbf5beee63a2de1f1ee609bf6d6665a9f5985fd

  • SHA256

    9c50292bc37f90fb938b51c90ec031df46b35a1b0bb438fe92d6d312c615ec41

  • SHA512

    ed9803af67836e458b0cea03093a501bb73bfacc8522ebf8a5ca1a96810cd968789318c654552bbdf252e28097c54c08d41c3d765ee171866b2fc854a4be2996

  • SSDEEP

    3072:YJacj8v7wQ+ZGx7w8wjjP8I1IU8RjrzzvUWAOZjfKdLOYP:YJPgv7wJZ87wBjYI1IUwrIOZyxP

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

Hacked

C2

abdo95.ddns.net:1177

Mutex

ed6e2bf930f6d35b3ac57c049d10ac2c

Attributes
  • reg_key

    ed6e2bf930f6d35b3ac57c049d10ac2c

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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).

  • Suspicious behavior: EnumeratesProcesses 31 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a70f39e314acb6cea65107b7bcb78272.exe
    "C:\Users\Admin\AppData\Local\Temp\a70f39e314acb6cea65107b7bcb78272.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c test.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2576
      • C:\Users\Admin\AppData\Local\Temp\test.exe
        test.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2952
        • C:\Users\Admin\AppData\Local\Temp\Explorer.exe
          "C:\Users\Admin\AppData\Local\Temp\Explorer.exe"
          4⤵
          • Drops startup file
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2608
          • C:\Windows\SysWOW64\netsh.exe
            netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Explorer.exe" "Explorer.exe" ENABLE
            5⤵
            • Modifies Windows Firewall
            PID:2404

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    29KB

    MD5

    fc42513e45503d510fb011bbb309e51e

    SHA1

    e9741466f6e68dadb9e874f12d5b62fe14693741

    SHA256

    766240fd9026a04e4a7f20240f699133eef24a969e242afdd471ad0a179cefe3

    SHA512

    0f2a88f96a8a47abe062ccca986d2b3d98310374629c9067b19dbfeb73f23ba411b3ca5ae3877684770fb2d25947305b42c38a913a329e6220de6cd5d539a8ca

  • memory/1984-0-0x0000000000400000-0x0000000000498000-memory.dmp

    Filesize

    608KB

  • memory/1984-18-0x0000000000400000-0x0000000000498000-memory.dmp

    Filesize

    608KB

  • memory/2608-17-0x00000000740F0000-0x000000007469B000-memory.dmp

    Filesize

    5.7MB

  • memory/2608-16-0x00000000740F0000-0x000000007469B000-memory.dmp

    Filesize

    5.7MB

  • memory/2608-20-0x00000000740F0000-0x000000007469B000-memory.dmp

    Filesize

    5.7MB

  • memory/2608-21-0x0000000000BB0000-0x0000000000BF0000-memory.dmp

    Filesize

    256KB

  • memory/2608-22-0x0000000000BB0000-0x0000000000BF0000-memory.dmp

    Filesize

    256KB

  • memory/2952-5-0x00000000740F0000-0x000000007469B000-memory.dmp

    Filesize

    5.7MB

  • memory/2952-7-0x00000000002E0000-0x0000000000320000-memory.dmp

    Filesize

    256KB

  • memory/2952-6-0x00000000740F0000-0x000000007469B000-memory.dmp

    Filesize

    5.7MB

  • memory/2952-15-0x00000000740F0000-0x000000007469B000-memory.dmp

    Filesize

    5.7MB