Analysis

  • max time kernel
    141s
  • max time network
    147s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    01-08-2024 20:59

General

  • Target

    XClient.exe

  • Size

    80KB

  • MD5

    bfa950b37b6a4f8de71af861e677a8b4

  • SHA1

    2ee40bfbf2964d92c82256e5924169295dfdd225

  • SHA256

    07f94f8f6061ba95899914496edc5854aa810de56797d9004875276d60e21ade

  • SHA512

    235b514fac01b24edaef3aeb4209676789b6ba9264a8798cb7ae48c26d2455cdd8f254e92bbba688535acb69fd77b3c0a0a549cf97ece84c235cc74f72234e1a

  • SSDEEP

    1536:EI5NuEGJkEtydWqZQSp1eS+b59gxzhfxdl/5m6qeo//3Oy/4IK4Dax5:Eg1GhtktQGAS+b59cJ4eA/OlINDab

Malware Config

Extracted

Family

xworm

C2

full-self.gl.at.ply.gg:45212

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 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⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4144
    • 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:2724
    • 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:2204
    • 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\XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1704
    • 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
      PID:5056

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    3KB

    MD5

    8592ba100a78835a6b94d5949e13dfc1

    SHA1

    63e901200ab9a57c7dd4c078d7f75dcd3b357020

    SHA256

    fdd7d9def6f9f0c0f2e60dbc8a2d1999071cd7d3095e9e087bb1cda7a614ac3c

    SHA512

    87f98e6cb61b2a2a7d65710c4d33881d89715eb7a06e00d492259f35c3902498baabffc5886be0ec5a14312ad4c262e3fc40cd3a5cb91701af0fb229726b88c3

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

    1KB

    MD5

    0c8024f33f8ba74065f45280501f297b

    SHA1

    cc6553e92ba363804bcd2d6191342707edca95d2

    SHA256

    3860d7b5611d1ba75606516f9d841ddd806bd975b000111a605a06f8026fd30c

    SHA512

    180232d4fb132c0e6dfbdc191cb6f0dffd20f67c1f1f93e539decbf9250bbd86f9f6b4b354520afd12acdc5b6fd494f3f7726b801a55a76b197ad38849683266

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

    1KB

    MD5

    621ced8d6fc082aa3f5289bd8b23789b

    SHA1

    37791b32e521d2cee56dd089b3a7670b8ff5e19b

    SHA256

    041129a8ffc33ed0ece9e6a03d77d5bf6a84d3dcf2d8706fafc442f6eb4729f8

    SHA512

    5f2d2ee29f4a068bd3a52b0dd5bfc60d7d96fdb3ec6e1d573205d6335ff995d713c3bbd4298ccb1a20c8c750e128f8680c1f4aa499df5179941e4ff15fa032fa

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

    1KB

    MD5

    12ce32cdb860ea27c099070bd8739917

    SHA1

    0316c3dcd8f5926dc125427a2220526e53b2b1c6

    SHA256

    cea8621365f1e4a19ccdbc46ef431635352d68753fc939f7412df3181080f6bd

    SHA512

    69da9c85c8068dfcef7267154215047aa3743a80724b60558f22c66237e04b24737d14dea19b7d8d8a7236da32d4fe9b4a48af04f22f61f54c5a69af1bc0ca95

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cp0qsbun.kq0.ps1
    Filesize

    1B

    MD5

    c4ca4238a0b923820dcc509a6f75849b

    SHA1

    356a192b7913b04c54574d18c28d46e6395428ab

    SHA256

    6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

    SHA512

    4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

  • memory/2724-10-0x00000219267E0000-0x0000021926856000-memory.dmp
    Filesize

    472KB

  • memory/2724-11-0x00007FFD5A820000-0x00007FFD5B20C000-memory.dmp
    Filesize

    9.9MB

  • memory/2724-24-0x00007FFD5A820000-0x00007FFD5B20C000-memory.dmp
    Filesize

    9.9MB

  • memory/2724-41-0x00007FFD5A820000-0x00007FFD5B20C000-memory.dmp
    Filesize

    9.9MB

  • memory/2724-48-0x00007FFD5A820000-0x00007FFD5B20C000-memory.dmp
    Filesize

    9.9MB

  • memory/2724-52-0x00007FFD5A820000-0x00007FFD5B20C000-memory.dmp
    Filesize

    9.9MB

  • memory/2724-9-0x00007FFD5A820000-0x00007FFD5B20C000-memory.dmp
    Filesize

    9.9MB

  • memory/2724-6-0x00000219266B0000-0x00000219266D2000-memory.dmp
    Filesize

    136KB

  • memory/4144-0-0x0000000000B10000-0x0000000000B2A000-memory.dmp
    Filesize

    104KB

  • memory/4144-1-0x00007FFD5A823000-0x00007FFD5A824000-memory.dmp
    Filesize

    4KB

  • memory/4144-184-0x00007FFD5A820000-0x00007FFD5B20C000-memory.dmp
    Filesize

    9.9MB

  • memory/4144-185-0x00007FFD5A823000-0x00007FFD5A824000-memory.dmp
    Filesize

    4KB

  • memory/4144-186-0x00007FFD5A820000-0x00007FFD5B20C000-memory.dmp
    Filesize

    9.9MB