Analysis

  • max time kernel
    126s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    17-05-2024 04:19

General

  • Target

    a5aa53a0c804e4ca657a4f27cd1c02c0_NeikiAnalytics.exe

  • Size

    3.1MB

  • MD5

    a5aa53a0c804e4ca657a4f27cd1c02c0

  • SHA1

    0ee279c8084ef985c4525b5d2f494c28c5795e8e

  • SHA256

    a0b392d3c49dc9b3b763b6ad04984877f6ab7652a09630faa5b7058a19c81a5f

  • SHA512

    cf59cb9797901a7a2cf447d2bb468996728a8c135e40978c545696e076f82b3faeae47681afb05498df856042d253cc16800d1dba57f89594428f2bcbe5326f3

  • SSDEEP

    49152:evkt62XlaSFNWPjljiFa2RoUYIbHRJ6hbR3LoGduKTHHB72eh2NT:ev462XlaSFNWPjljiFXRoUYIbHRJ6D

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.50.244:4782

Mutex

8c0dd4a8-9378-4bb0-a8b0-01c7a7abc4a0

Attributes
  • encryption_key

    25C9945CAA6B7DC1F00936AF44864E2B40484EAE

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\a5aa53a0c804e4ca657a4f27cd1c02c0_NeikiAnalytics.exe
    "C:\Users\Admin\AppData\Local\Temp\a5aa53a0c804e4ca657a4f27cd1c02c0_NeikiAnalytics.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2972
    • C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:2648
    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2564
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:2660

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

    Filesize

    3.1MB

    MD5

    a5aa53a0c804e4ca657a4f27cd1c02c0

    SHA1

    0ee279c8084ef985c4525b5d2f494c28c5795e8e

    SHA256

    a0b392d3c49dc9b3b763b6ad04984877f6ab7652a09630faa5b7058a19c81a5f

    SHA512

    cf59cb9797901a7a2cf447d2bb468996728a8c135e40978c545696e076f82b3faeae47681afb05498df856042d253cc16800d1dba57f89594428f2bcbe5326f3

  • memory/2564-10-0x000007FEF5E40000-0x000007FEF682C000-memory.dmp

    Filesize

    9.9MB

  • memory/2564-11-0x000007FEF5E40000-0x000007FEF682C000-memory.dmp

    Filesize

    9.9MB

  • memory/2564-9-0x0000000000110000-0x0000000000434000-memory.dmp

    Filesize

    3.1MB

  • memory/2564-12-0x000007FEF5E40000-0x000007FEF682C000-memory.dmp

    Filesize

    9.9MB

  • memory/2564-13-0x000007FEF5E40000-0x000007FEF682C000-memory.dmp

    Filesize

    9.9MB

  • memory/2972-0-0x000007FEF5E43000-0x000007FEF5E44000-memory.dmp

    Filesize

    4KB

  • memory/2972-1-0x0000000001090000-0x00000000013B4000-memory.dmp

    Filesize

    3.1MB

  • memory/2972-2-0x000007FEF5E40000-0x000007FEF682C000-memory.dmp

    Filesize

    9.9MB

  • memory/2972-8-0x000007FEF5E40000-0x000007FEF682C000-memory.dmp

    Filesize

    9.9MB