Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    31-05-2024 12:52

General

  • Target

    KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe

  • Size

    516KB

  • MD5

    ae18fe8ea57bf020d7471c6a6132c06a

  • SHA1

    4f12697ac3205690edd4b3b2cb24306ca6107597

  • SHA256

    45434befb4ed9537e306b346f7ca303e5c01f0c288378695278c8c2dd82e626a

  • SHA512

    52d9166895efc0020b45998185a6616519582941a34e18be19252e592c38510d280ecc4206c2e6abf6103bd04de423f073b2db2e581ec9b7df7f5c966bc3da5e

  • SSDEEP

    12288:oPOt06hFiwaFurxUAdGfulE/BgsY/lae:Zt02FiwaFrAdGfDY

Malware Config

Extracted

Family

xworm

C2

104.250.180.178:7061

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Signatures

  • Detect Xworm Payload 5 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.

  • Drops startup file 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe
    "C:\Users\Admin\AppData\Local\Temp\KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1948
    • C:\Users\Admin\AppData\Local\Temp\KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe
      "C:\Users\Admin\AppData\Local\Temp\KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe"
      2⤵
      • Drops startup file
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1796
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2396
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2392
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3048
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1268

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    7e66a8a14195efdaa07d950d696101f2

    SHA1

    5edfe5f7ffe9bb9a64c66de561c9eb433727900f

    SHA256

    b4fa01907c680f3805ef45dd146d5ff57128448ea4e9c6ed31b1a7e3805c85ec

    SHA512

    32ccec3c74e787514fab1e996c9eaa39eb350b9a589ce563a917c006389bb400ad83bf07c02ee7b5dbb624ce36a4583864720d2af1855b8d81360f0dd4957e1c

  • \Users\Admin\AppData\Roaming\XClient.exe

    Filesize

    516KB

    MD5

    ae18fe8ea57bf020d7471c6a6132c06a

    SHA1

    4f12697ac3205690edd4b3b2cb24306ca6107597

    SHA256

    45434befb4ed9537e306b346f7ca303e5c01f0c288378695278c8c2dd82e626a

    SHA512

    52d9166895efc0020b45998185a6616519582941a34e18be19252e592c38510d280ecc4206c2e6abf6103bd04de423f073b2db2e581ec9b7df7f5c966bc3da5e

  • memory/1796-6-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1796-41-0x00000000748C0000-0x0000000074FAE000-memory.dmp

    Filesize

    6.9MB

  • memory/1796-42-0x00000000748C0000-0x0000000074FAE000-memory.dmp

    Filesize

    6.9MB

  • memory/1796-17-0x00000000748C0000-0x0000000074FAE000-memory.dmp

    Filesize

    6.9MB

  • memory/1796-7-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1796-12-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1796-14-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1796-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1796-9-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1796-16-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1796-8-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1948-5-0x0000000005080000-0x00000000050D6000-memory.dmp

    Filesize

    344KB

  • memory/1948-0-0x00000000748CE000-0x00000000748CF000-memory.dmp

    Filesize

    4KB

  • memory/1948-18-0x00000000748C0000-0x0000000074FAE000-memory.dmp

    Filesize

    6.9MB

  • memory/1948-4-0x0000000000460000-0x0000000000470000-memory.dmp

    Filesize

    64KB

  • memory/1948-3-0x0000000000B20000-0x0000000000B38000-memory.dmp

    Filesize

    96KB

  • memory/1948-2-0x00000000748C0000-0x0000000074FAE000-memory.dmp

    Filesize

    6.9MB

  • memory/1948-1-0x0000000000B70000-0x0000000000BF4000-memory.dmp

    Filesize

    528KB