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Analysis

  • max time kernel
    126s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    28/01/2025, 12:03

General

  • Target

    ZinxE.exe

  • Size

    3.1MB

  • MD5

    0140172177cb3a07b943bd6402bfc3ed

  • SHA1

    e0a84cdf6e95bd35e4a6decb2bd92a9b4e3b1906

  • SHA256

    0f792f8eb7bfac109028240f2dad7294be0d110f70d74c62c46850362921203f

  • SHA512

    9fceb15de82994bcc54cc4a907b572e4f87666c33f4b9bdad18056cb6c44b0aad8bc19d8b3ef6d239a51097d5e460fbac41d8a7232872f836986735894a625d4

  • SSDEEP

    49152:2v2I22SsaNYfdPBldt698dBcjHJSv/lBxBjoGd3EtTHHB72eh2NT:2vb22SsaNYfdPBldt6+dBcjHY/vHE

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

thee

C2

192.168.0.108:4782

125.25.56.200:4782

Mutex

e019a276-a66a-4019-9492-a07a85347b7f

Attributes
  • encryption_key

    242D976031AFD7480A21D8DDA2E114B47EB747FB

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    csystem

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Scheduled Task/Job: Scheduled Task 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\ZinxE.exe
    "C:\Users\Admin\AppData\Local\Temp\ZinxE.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1796
    • C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "csystem" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:776
    • 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:2480
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "csystem" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2864

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

    0140172177cb3a07b943bd6402bfc3ed

    SHA1

    e0a84cdf6e95bd35e4a6decb2bd92a9b4e3b1906

    SHA256

    0f792f8eb7bfac109028240f2dad7294be0d110f70d74c62c46850362921203f

    SHA512

    9fceb15de82994bcc54cc4a907b572e4f87666c33f4b9bdad18056cb6c44b0aad8bc19d8b3ef6d239a51097d5e460fbac41d8a7232872f836986735894a625d4

  • memory/1796-0-0x000007FEF5EF3000-0x000007FEF5EF4000-memory.dmp

    Filesize

    4KB

  • memory/1796-1-0x0000000001390000-0x00000000016B4000-memory.dmp

    Filesize

    3.1MB

  • memory/1796-2-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

    Filesize

    9.9MB

  • memory/1796-9-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

    Filesize

    9.9MB

  • memory/2480-8-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

    Filesize

    9.9MB

  • memory/2480-10-0x0000000000320000-0x0000000000644000-memory.dmp

    Filesize

    3.1MB

  • memory/2480-11-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

    Filesize

    9.9MB

  • memory/2480-12-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

    Filesize

    9.9MB