Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/12/2024, 02:47

General

  • Target

    XClient.exe

  • Size

    83KB

  • MD5

    e0a98853cc1bbc3b4bcf3a7e8ee3cbec

  • SHA1

    b8c72cf0fdd61684634044a163f2abd3e4f1c945

  • SHA256

    3e9e1e67ecf3fe006127f22261b7c02ce8891bcfbc33ee928867def3dc0caaa0

  • SHA512

    ebde7f94a2bd112f4993c2d59e7dd7012970819436589898f8110506ca19741ba25549569fb4effb3265e472377ef60b7bfb268663612942af0d67a2b3377064

  • SSDEEP

    1536:8Ztji2WfVA/Lyh7jaNMYF3lfs9K3u+FbBKq1K98496BJVOGb3oAUmMJfYJnik:GL/mt6f3BbgqgEnO83oA5MJf2b

Malware Config

Extracted

Family

xworm

C2

homepage-kills.gl.at.ply.gg:50722

Attributes
  • Install_directory

    %Temp%

  • install_file

    GoogleUpdateService.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 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).

  • 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 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\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4000
    • 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\XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1120
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1928
    • 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\GoogleUpdateService.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1360
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'GoogleUpdateService.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4468
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "GoogleUpdateService" /tr "C:\Users\Admin\AppData\Local\Temp\GoogleUpdateService.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2972
  • C:\Users\Admin\AppData\Local\Temp\GoogleUpdateService.exe
    C:\Users\Admin\AppData\Local\Temp\GoogleUpdateService.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2324
  • C:\Users\Admin\AppData\Local\Temp\GoogleUpdateService.exe
    C:\Users\Admin\AppData\Local\Temp\GoogleUpdateService.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3992

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          654B

          MD5

          2ff39f6c7249774be85fd60a8f9a245e

          SHA1

          684ff36b31aedc1e587c8496c02722c6698c1c4e

          SHA256

          e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

          SHA512

          1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

        • 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

          6d3e9c29fe44e90aae6ed30ccf799ca8

          SHA1

          c7974ef72264bbdf13a2793ccf1aed11bc565dce

          SHA256

          2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

          SHA512

          60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

          Filesize

          944B

          MD5

          51cf8df21f531e31f7740b4ec487a48a

          SHA1

          40c6a73b22d71625a62df109aefc92a5f9b9d13e

          SHA256

          263d9b98a897d1d66da4832af640c4bf5ab0ae91125ba12243453dfe714f3d0d

          SHA512

          57a85461f6ea96b26a8b53d3a9cca18543e4ddbe996e8f412fc4cf7cf6e9ffe558c96da7b322a42f18bef62020e65aee119bed6102f75e2f605df09b02ec6368

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

          Filesize

          944B

          MD5

          cc19bcff372d20459d3651ba8aef50e7

          SHA1

          3c6f1d4cdd647864fb97a16b1aefba67fcee11f7

          SHA256

          366473e774d8976c7fd4dc582220666fb61a4feb3f7c95e69b2a68ad9e446ec9

          SHA512

          a0e360ca4b6e874fd44612bf4b17f3722c0619da4f6bade12a62efadae88c2d33460114eaafa2bc3fb1cef5bea07e745b8bee24f15d0cacaff5f4a521b225080

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

          Filesize

          83KB

          MD5

          e0a98853cc1bbc3b4bcf3a7e8ee3cbec

          SHA1

          b8c72cf0fdd61684634044a163f2abd3e4f1c945

          SHA256

          3e9e1e67ecf3fe006127f22261b7c02ce8891bcfbc33ee928867def3dc0caaa0

          SHA512

          ebde7f94a2bd112f4993c2d59e7dd7012970819436589898f8110506ca19741ba25549569fb4effb3265e472377ef60b7bfb268663612942af0d67a2b3377064

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oltlhs5u.1ad.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/1120-9-0x000001FCDAE40000-0x000001FCDAE62000-memory.dmp

          Filesize

          136KB

        • memory/1120-18-0x00007FFEC6140000-0x00007FFEC6C01000-memory.dmp

          Filesize

          10.8MB

        • memory/1120-15-0x00007FFEC6140000-0x00007FFEC6C01000-memory.dmp

          Filesize

          10.8MB

        • memory/1120-14-0x00007FFEC6140000-0x00007FFEC6C01000-memory.dmp

          Filesize

          10.8MB

        • memory/1120-3-0x00007FFEC6140000-0x00007FFEC6C01000-memory.dmp

          Filesize

          10.8MB

        • memory/4000-0-0x00007FFEC6143000-0x00007FFEC6145000-memory.dmp

          Filesize

          8KB

        • memory/4000-54-0x00007FFEC6140000-0x00007FFEC6C01000-memory.dmp

          Filesize

          10.8MB

        • memory/4000-2-0x00007FFEC6140000-0x00007FFEC6C01000-memory.dmp

          Filesize

          10.8MB

        • memory/4000-1-0x0000000000C00000-0x0000000000C1C000-memory.dmp

          Filesize

          112KB