Overview

overview

10

Static

static

3

2024-05-10...ch.exe

windows7-x64

1

2024-05-10...ch.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/05/2024, 12:24

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General

  • Target
    2024-05-10_1567c50031d0573eff13680212aef09e_snatch.exe
  • Size 7.0MB
  • Sample240510-plgaashe44
  • SHA256 400b7d3166ee35916f69e1c0a0293124208b332bc20f2a8f4c0ca9cc217e2812
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasaroffice04executionspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • 85.114.96.25:4782

Mutex

  • 0483526a-ad15-443b-a971-937810b8d77f

Attributes
  • encryption_key

    E0EE0BC9F6E416004889AB1EFE2A9E9023A4AE2C

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Internet

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

    trojanspywarequasar
  • Quasar payload 2 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 2 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs
  • Detects executables containing common artifacts observed in infostealers 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    execution
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

    persistence
  • Modifies system certificate store 2 TTPs 3 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 8 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-10_1567c50031d0573eff13680212aef09e_snatch.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_1567c50031d0573eff13680212aef09e_snatch.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1680
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command "Start-Process -FilePath 'powershell' -ArgumentList 'Add-MpPreference -ExclusionPath \\\"C:\\\\\"' -Verb RunAs"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1832
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath \"C:\\"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2848
    • C:\Users\Admin\AppData\Local\Temp\zigi.exe
      C:\Users\Admin\AppData\Local\Temp\zigi.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:4700
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "Internet" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:2916

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        powershell.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8
        • MD5 SHA1 SHA512
        Submit Download

        StartupProfileData-NonInteractive
        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 64B
        • SHA256 d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc
        • MD5 SHA1 SHA512
        Submit Download

        __PSScriptPolicyTest_hmcakhaj.b52.ps1
        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hmcakhaj.b52.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512
        Submit Download

        zigi.exe
        • Path C:\Users\Admin\AppData\Local\Temp\zigi.exe
        • Size 3.1MB
        • SHA256 ec1b5c2205ac25c1a86c2e2680fb7db31b1b6950f072690a931ac6d9b8bd61f8
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/1832-0-0x00007FFEB35E3000-0x00007FFEB35E5000-memory.dmp
        Download

        memory/1832-1-0x0000027E601F0000-0x0000027E60212000-memory.dmp
        Download

        memory/1832-11-0x00007FFEB35E0000-0x00007FFEB40A1000-memory.dmp
        Download

        memory/1832-12-0x00007FFEB35E0000-0x00007FFEB40A1000-memory.dmp
        Download

        memory/1832-15-0x00007FFEB35E0000-0x00007FFEB40A1000-memory.dmp
        Download

        memory/4700-34-0x0000000000910000-0x0000000000C34000-memory.dmp
        Download

        memory/4700-35-0x000000001C430000-0x000000001C480000-memory.dmp
        Download

        memory/4700-36-0x000000001C540000-0x000000001C5F2000-memory.dmp
        Download