Analysis

  • max time kernel
    125s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    19/08/2024, 19:55

General

  • Target

    PepperX.exe

  • Size

    3.1MB

  • MD5

    2ed601b0043d457f70fff1f1846acebb

  • SHA1

    7c1a93357661d9b7ae82f570db12267b0163dc75

  • SHA256

    fcece45f00b710bd5cb01a2a79781c871f1bd36fac18e00e85bd6452ecd5eadd

  • SHA512

    36abc1f2c857e6d266b8bf7544f9f7bae9d1d8b96487588c0c7bb20f725323d12979831de4616d7af59424b4d2851359b2f2f5e97845585da6e7b18902f90d72

  • SSDEEP

    49152:UvBt62XlaSFNWPjljiFa2RoUYIObKpF5MheLoG8oTHHB72eh2NT:Uvr62XlaSFNWPjljiFXRoUYI6KpFJ

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

PepperX

C2

73.190.43.125:4782

Mutex

88509de8-78d9-4efe-9597-51afc31df588

Attributes
  • encryption_key

    76CFB69AF5F0F8C3D00E4C97AA198CA6E956A019

  • install_name

    PepperX.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 5 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\PepperX.exe
    "C:\Users\Admin\AppData\Local\Temp\PepperX.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2636
    • C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "Windows" /sc ONLOGON /tr "C:\Windows\system32\SubDir\PepperX.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2712
    • C:\Windows\system32\SubDir\PepperX.exe
      "C:\Windows\system32\SubDir\PepperX.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3068
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "Windows" /sc ONLOGON /tr "C:\Windows\system32\SubDir\PepperX.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:\Windows\System32\SubDir\PepperX.exe

    Filesize

    3.1MB

    MD5

    2ed601b0043d457f70fff1f1846acebb

    SHA1

    7c1a93357661d9b7ae82f570db12267b0163dc75

    SHA256

    fcece45f00b710bd5cb01a2a79781c871f1bd36fac18e00e85bd6452ecd5eadd

    SHA512

    36abc1f2c857e6d266b8bf7544f9f7bae9d1d8b96487588c0c7bb20f725323d12979831de4616d7af59424b4d2851359b2f2f5e97845585da6e7b18902f90d72

  • memory/2636-0-0x000007FEF5BC3000-0x000007FEF5BC4000-memory.dmp

    Filesize

    4KB

  • memory/2636-1-0x0000000000B60000-0x0000000000E84000-memory.dmp

    Filesize

    3.1MB

  • memory/2636-2-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp

    Filesize

    9.9MB

  • memory/2636-9-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp

    Filesize

    9.9MB

  • memory/3068-8-0x00000000011B0000-0x00000000014D4000-memory.dmp

    Filesize

    3.1MB

  • memory/3068-10-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp

    Filesize

    9.9MB

  • memory/3068-11-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp

    Filesize

    9.9MB

  • memory/3068-12-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp

    Filesize

    9.9MB