Analysis

  • max time kernel
    94s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-01-2025 20:32

General

  • Target

    f1d0dc52fe626c992361233304cca5a0e62eec2875f9cb4b091f88ed39a30255.exe

  • Size

    403KB

  • MD5

    b4d7eb7d47c43669d06496149752d994

  • SHA1

    9d9ebf6ef2f364f71f8e1407109521fd9569a0ad

  • SHA256

    f1d0dc52fe626c992361233304cca5a0e62eec2875f9cb4b091f88ed39a30255

  • SHA512

    573cc4fa1ad5c09cfba608018dab4ecbfab28f8b1a248dbf1db03beeba3f4312913967bce2e6ffd7ae8993ff2c96f748f38a273399466594d89e2c8bac1ffd53

  • SSDEEP

    6144:LHzOc/iAaK0RVQIaQlPI2Js6yJR5vQu7OnbMPi8NPGd7TzdK:N/iAgRqI/lj6XRmmOaBNPa7

Malware Config

Signatures

  • Contains code to disable Windows Defender 2 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 9 IoCs
  • Modifies security service 2 TTPs 4 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • UAC bypass 3 TTPs 6 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Executes dropped EXE 1 IoCs
  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Modifies Security services 2 TTPs 16 IoCs

    Modifies the startup behavior of a security service.

  • Interacts with shadow copies 3 TTPs 2 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • System policy modification 1 TTPs 6 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.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\f1d0dc52fe626c992361233304cca5a0e62eec2875f9cb4b091f88ed39a30255.exe
    "C:\Users\Admin\AppData\Local\Temp\f1d0dc52fe626c992361233304cca5a0e62eec2875f9cb4b091f88ed39a30255.exe"
    1⤵
    • Modifies Windows Defender Real-time Protection settings
    • Modifies security service
    • UAC bypass
    • Windows security bypass
    • Windows security modification
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Modifies Security services
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4132
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "\Microsoft\Windows\System\Dev88\Files\ficeTelemetryAgentPdeTCS" /SC MINUTE /MO 3 /RL HIGHEST /tr "C:\Users\Admin\AppData\Local\Temp\f1d0dc52fe626c992361233304cca5a0e62eec2875f9cb4b091f88ed39a30255.exe" /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2032
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /delete /tn "ficeTelemetryAgentPdeTCS" /f
      2⤵
        PID:932
      • C:\Windows\SYSTEM32\vssadmin.exe
        "vssadmin" delete shadows /all /quiet
        2⤵
        • Interacts with shadow copies
        PID:1500
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Get-MpPreference -verbose
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1956
      • C:\Users\Admin\AppData\Roaming\PdeTCS\PdeTCS.exe
        "C:\Users\Admin\AppData\Roaming\PdeTCS\PdeTCS.exe"
        2⤵
        • Modifies Windows Defender Real-time Protection settings
        • Modifies security service
        • UAC bypass
        • Windows security bypass
        • Executes dropped EXE
        • Windows security modification
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Modifies Security services
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:4856
        • C:\Windows\SYSTEM32\schtasks.exe
          "schtasks" /create /tn "\Microsoft\Windows\System\Dev88\Files\ficeTelemetryAgentPdeTCS" /SC MINUTE /MO 3 /RL HIGHEST /tr "C:\Users\Admin\AppData\Roaming\PdeTCS\PdeTCS.exe" /f
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4528
        • C:\Windows\SYSTEM32\schtasks.exe
          "schtasks" /delete /tn "ficeTelemetryAgentPdeTCS" /f
          3⤵
            PID:4664
          • C:\Windows\SYSTEM32\vssadmin.exe
            "vssadmin" delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:4196
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" Get-MpPreference -verbose
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1968
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3428

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

        Filesize

        2KB

        MD5

        d85ba6ff808d9e5444a4b369f5bc2730

        SHA1

        31aa9d96590fff6981b315e0b391b575e4c0804a

        SHA256

        84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

        SHA512

        8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        944B

        MD5

        77d622bb1a5b250869a3238b9bc1402b

        SHA1

        d47f4003c2554b9dfc4c16f22460b331886b191b

        SHA256

        f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

        SHA512

        d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ge2l05vs.mad.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Roaming\PdeTCS\PdeTCS.exe

        Filesize

        403KB

        MD5

        b4d7eb7d47c43669d06496149752d994

        SHA1

        9d9ebf6ef2f364f71f8e1407109521fd9569a0ad

        SHA256

        f1d0dc52fe626c992361233304cca5a0e62eec2875f9cb4b091f88ed39a30255

        SHA512

        573cc4fa1ad5c09cfba608018dab4ecbfab28f8b1a248dbf1db03beeba3f4312913967bce2e6ffd7ae8993ff2c96f748f38a273399466594d89e2c8bac1ffd53

      • memory/1956-12-0x000001B5DB080000-0x000001B5DB0A2000-memory.dmp

        Filesize

        136KB

      • memory/4132-0-0x00007FFA5DF43000-0x00007FFA5DF45000-memory.dmp

        Filesize

        8KB

      • memory/4132-1-0x0000000000AE0000-0x0000000000B4C000-memory.dmp

        Filesize

        432KB

      • memory/4132-2-0x00007FFA5DF40000-0x00007FFA5EA01000-memory.dmp

        Filesize

        10.8MB

      • memory/4132-4-0x000000001B660000-0x000000001B672000-memory.dmp

        Filesize

        72KB

      • memory/4132-5-0x000000001C5A0000-0x000000001C5DC000-memory.dmp

        Filesize

        240KB

      • memory/4132-25-0x00007FFA5DF40000-0x00007FFA5EA01000-memory.dmp

        Filesize

        10.8MB