Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    22-01-2025 07:23

General

  • Target

    XClient.exe

  • Size

    66KB

  • MD5

    5b6d1840096a7c115a231d7d38a68090

  • SHA1

    0a560368bf1bdaaef81fdfd28f5404af29cb7362

  • SHA256

    08f25063db660d5709d349a25e15d140fce9d2dea938203a605a1a8e60cc2b31

  • SHA512

    062da15392c05ae52164675823287e9cef5ed33220c284d125898f74092affddd939562394fb13f0bca008297b231a35fdaa87e289317b4d0cc4b5294ff937ff

  • SSDEEP

    1536:am47QrYisUPpk+CSwnukgwbgTpT46YOBT9n+1:a3Idynxgwbg0OBJ+1

Malware Config

Extracted

Family

xworm

C2

publication-glossary.gl.at.ply.gg:26117

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

  • telegram

    https://api.telegram.org/bot7704029346:AAHPre1lXQa0UfPCpOUXJZ9UXA9mFxvH4Gk/sendMessage?chat_id=7590668020

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.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • 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).

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 32 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: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 2 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⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3676
    • 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:560
    • 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:772
    • 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\security'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1752
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'security'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3360
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "security" /tr "C:\Users\Admin\AppData\Roaming\security"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:900
  • C:\Windows\system32\BackgroundTransferHost.exe
    "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.13
    1⤵
    • Modifies registry class
    PID:2404
  • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
    "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:1092
  • C:\Users\Admin\AppData\Roaming\security
    C:\Users\Admin\AppData\Roaming\security
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1408
  • C:\Users\Admin\AppData\Roaming\security
    C:\Users\Admin\AppData\Roaming\security
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4292

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

    2KB

    MD5

    627073ee3ca9676911bee35548eff2b8

    SHA1

    4c4b68c65e2cab9864b51167d710aa29ebdcff2e

    SHA256

    85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

    SHA512

    3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

    Filesize

    654B

    MD5

    2cbbb74b7da1f720b48ed31085cbd5b8

    SHA1

    79caa9a3ea8abe1b9c4326c3633da64a5f724964

    SHA256

    e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

    SHA512

    ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

    Filesize

    944B

    MD5

    aa4f31835d07347297d35862c9045f4a

    SHA1

    83e728008935d30f98e5480fba4fbccf10cefb05

    SHA256

    99c83bc5c531e49d4240700142f3425aba74e18ebcc23556be32238ffde9cce0

    SHA512

    ec3a4bee8335007b8753ae8ac42287f2b3bcbb258f7fc3fb15c9f8d3e611cb9bf6ae2d3034953286a34f753e9ec33f7495e064bab0e8c7fcedd75d6e5eb66629

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

    Filesize

    944B

    MD5

    8cb7f4b4ab204cacd1af6b29c2a2042c

    SHA1

    244540c38e33eac05826d54282a0bfa60340d6a1

    SHA256

    4994013dabe4f131d401879278eee147add6349124ea6452358dca7e2344c7a6

    SHA512

    7651cb6863a425840db610253151e271d3e8da26a8c633ce484247266fa226792ecb84b9578df3ab17fef84a5dfcad417b63a7df59c9650a907e08d59b91dd6e

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

    Filesize

    944B

    MD5

    cef328ddb1ee8916e7a658919323edd8

    SHA1

    a676234d426917535e174f85eabe4ef8b88256a5

    SHA256

    a1b5b7ada8ebc910f20f91ada3991d3321104e9da598c958b1edac9f9aca0e90

    SHA512

    747400c20ca5b5fd1b54bc24e75e6a78f15af61df263be932d2ee7b2f34731c2de8ce03b2706954fb098c1ac36f0b761cf37e418738fa91f2a8ea78572f545cb

  • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\BackgroundTransferApi\abbbee31-a3f8-41a4-b4a1-9642e8438dc4.down_data

    Filesize

    555KB

    MD5

    5683c0028832cae4ef93ca39c8ac5029

    SHA1

    248755e4e1db552e0b6f8651b04ca6d1b31a86fb

    SHA256

    855abd360d8a8d6974eba92b70cbd09ce519bc8773439993f9ab37cb6847309e

    SHA512

    aba434bd29be191c823b02ea9b639beb10647bbe7759bbffdaa790dfb1ec2c58d74c525ef11aacda209e4effe322d1d3a07b115446c8914b07a3bce4d8a0e2c3

  • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\PQ45N7WT\www.bing[1].xml

    Filesize

    8KB

    MD5

    2584f6bae60a18476e4a0e2e1fea563c

    SHA1

    44fb023141fd12b9557945622f36bf7ec4172f91

    SHA256

    d63329b0cc005fdde434f6a1e788080e2d9781d9e9d03cbc6b06bd6f31c87df5

    SHA512

    322cc782e6ccf1225863ebd85b5b2d2d59a857b052416ac3d3f33a0aba33b4dcb506c2d5b070fa4b35f29337811acc5214dd3395e858b646ac8628d4fad76819

  • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\PQ45N7WT\www.bing[1].xml

    Filesize

    15KB

    MD5

    8c2fee42a3906c5c5da686b721b56763

    SHA1

    97cbd5bf87c7af8c9a25242891cb3ee8af9b3922

    SHA256

    e2fb12e02e8de308fb6a6b2d3628a4dee8584ebbfab76636f495cb9e9b78c8aa

    SHA512

    cc759a2dd422b778ee1e825a812a375da2bf4d824f1b72d16d7541b699b30eeac3ab4b396bfd35aaa8b587d04c28769c6099335b71439dd19528c44a59a6614f

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_graoqunp.kbs.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Roaming\security

    Filesize

    66KB

    MD5

    5b6d1840096a7c115a231d7d38a68090

    SHA1

    0a560368bf1bdaaef81fdfd28f5404af29cb7362

    SHA256

    08f25063db660d5709d349a25e15d140fce9d2dea938203a605a1a8e60cc2b31

    SHA512

    062da15392c05ae52164675823287e9cef5ed33220c284d125898f74092affddd939562394fb13f0bca008297b231a35fdaa87e289317b4d0cc4b5294ff937ff

  • memory/560-13-0x00007FFE41EB0000-0x00007FFE42972000-memory.dmp

    Filesize

    10.8MB

  • memory/560-15-0x00007FFE41EB0000-0x00007FFE42972000-memory.dmp

    Filesize

    10.8MB

  • memory/560-14-0x00007FFE41EB0000-0x00007FFE42972000-memory.dmp

    Filesize

    10.8MB

  • memory/560-4-0x000001DDD28F0000-0x000001DDD2912000-memory.dmp

    Filesize

    136KB

  • memory/560-18-0x00007FFE41EB0000-0x00007FFE42972000-memory.dmp

    Filesize

    10.8MB

  • memory/560-11-0x00007FFE41EB0000-0x00007FFE42972000-memory.dmp

    Filesize

    10.8MB

  • memory/560-12-0x00007FFE41EB0000-0x00007FFE42972000-memory.dmp

    Filesize

    10.8MB

  • memory/1092-274-0x000001C7496A0000-0x000001C7497A0000-memory.dmp

    Filesize

    1024KB

  • memory/1092-129-0x000001C744400000-0x000001C744500000-memory.dmp

    Filesize

    1024KB

  • memory/1092-180-0x000001C7457C0000-0x000001C7458C0000-memory.dmp

    Filesize

    1024KB

  • memory/1092-179-0x000001C7235E0000-0x000001C723600000-memory.dmp

    Filesize

    128KB

  • memory/1092-181-0x000001C7454D0000-0x000001C7454F0000-memory.dmp

    Filesize

    128KB

  • memory/3676-54-0x00007FFE41EB0000-0x00007FFE42972000-memory.dmp

    Filesize

    10.8MB

  • memory/3676-292-0x00007FFE41EB0000-0x00007FFE42972000-memory.dmp

    Filesize

    10.8MB

  • memory/3676-0-0x00007FFE41EB3000-0x00007FFE41EB5000-memory.dmp

    Filesize

    8KB

  • memory/3676-53-0x00007FFE41EB3000-0x00007FFE41EB5000-memory.dmp

    Filesize

    8KB

  • memory/3676-1-0x0000000000140000-0x0000000000156000-memory.dmp

    Filesize

    88KB