Analysis

  • max time kernel
    264s
  • max time network
    273s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-06-2024 16:07

General

  • Target

    XClient.exe

  • Size

    35KB

  • MD5

    40a096be21131faf1c975650b8ba4bc4

  • SHA1

    c91252676f2a152ff5ad84218f93df5fb863d5fb

  • SHA256

    fb5db25e5bf29061816d79d3ee266be78ce2931c8c282da6edf5f2aba9ee4bf5

  • SHA512

    199defcc47ad850c91b1ced41d4e03b0a8d77e3ddf5ba61a6139712b52add849caec51d6f35d3cf54ef1ec73f4be294482ae31b4f7b1c061217eb3194accecee

  • SSDEEP

    768:o6x4gIgFXhi9zef/rT6T609yA/v55FyK9juF6pOjh8yK:o6x4gIEhbT08A/vjF39juF6pOj2D

Malware Config

Extracted

Family

xworm

Version

5.0

C2

area-translator.gl.at.ply.gg:7895

Mutex

nInTQ4y6Nk8jIESf

Attributes
  • Install_directory

    %AppData%

  • install_file

    astrorunners.exe

aes.plain

Signatures

  • Detect Xworm Payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • 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.

  • Drops startup file 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2956
    • 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:1140
    • 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:2208
    • 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\Roaming\astrorunners.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4708
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'astrorunners.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:428
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2880

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    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

      cadef9abd087803c630df65264a6c81c

      SHA1

      babbf3636c347c8727c35f3eef2ee643dbcc4bd2

      SHA256

      cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

      SHA512

      7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

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

      Filesize

      944B

      MD5

      22310ad6749d8cc38284aa616efcd100

      SHA1

      440ef4a0a53bfa7c83fe84326a1dff4326dcb515

      SHA256

      55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

      SHA512

      2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fhkwyhn5.2rq.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/1140-18-0x00007FF9A4670000-0x00007FF9A5131000-memory.dmp

      Filesize

      10.8MB

    • memory/1140-13-0x00007FF9A4670000-0x00007FF9A5131000-memory.dmp

      Filesize

      10.8MB

    • memory/1140-14-0x00007FF9A4670000-0x00007FF9A5131000-memory.dmp

      Filesize

      10.8MB

    • memory/1140-17-0x000001D046CC0000-0x000001D046EDC000-memory.dmp

      Filesize

      2.1MB

    • memory/1140-12-0x00007FF9A4670000-0x00007FF9A5131000-memory.dmp

      Filesize

      10.8MB

    • memory/1140-11-0x000001D047180000-0x000001D0471A2000-memory.dmp

      Filesize

      136KB

    • memory/2956-0-0x00007FF9A4673000-0x00007FF9A4675000-memory.dmp

      Filesize

      8KB

    • memory/2956-1-0x0000000000F70000-0x0000000000F80000-memory.dmp

      Filesize

      64KB

    • memory/2956-58-0x00007FF9A4670000-0x00007FF9A5131000-memory.dmp

      Filesize

      10.8MB

    • memory/2956-59-0x00007FF9A4673000-0x00007FF9A4675000-memory.dmp

      Filesize

      8KB

    • memory/2956-60-0x00007FF9A4670000-0x00007FF9A5131000-memory.dmp

      Filesize

      10.8MB

    • memory/4708-42-0x0000020131D80000-0x0000020131F9C000-memory.dmp

      Filesize

      2.1MB