Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2024, 03:15

General

  • Target

    WizClient.exe

  • Size

    74KB

  • MD5

    69cad671f60367927329bbd20f91bed7

  • SHA1

    9aa6c82982591ebc0c64cc94d2efaac7378bde86

  • SHA256

    dc94e48f4fd4cdf8049e6ac2ea9b65df93936015c50e26d0c8d6b2217e7d539b

  • SHA512

    bb4a49b2eada56d9d9c0fd7b7464447460e7bb84c6416f632295197562e65a456d33099799d3083684c45150ad362d036ee0eb843745272d5accab5ff9a525f4

  • SSDEEP

    1536:ObGA+5D6BRZ2Ka+QRPPN7cmKuZbN5NTEkIG6QOj89RnXqDnnl:ObGpsBRZ4d9bZbN3EAOA9RnXqLl

Malware Config

Extracted

Family

xworm

C2

141.98.252.138.224:5552

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.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 3 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
  • Executes dropped EXE 3 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).

  • 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 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\WizClient.exe
    "C:\Users\Admin\AppData\Local\Temp\WizClient.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1988
    • 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\WizClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:336
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WizClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:412
    • 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\WizClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:220
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WizClient" /tr "C:\Users\Admin\AppData\Roaming\WizClient.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4416
  • C:\Users\Admin\AppData\Roaming\WizClient.exe
    C:\Users\Admin\AppData\Roaming\WizClient.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1408
  • C:\Users\Admin\AppData\Roaming\WizClient.exe
    C:\Users\Admin\AppData\Roaming\WizClient.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1476
  • C:\Users\Admin\AppData\Roaming\WizClient.exe
    C:\Users\Admin\AppData\Roaming\WizClient.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4640

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          77d622bb1a5b250869a3238b9bc1402b

          SHA1

          d47f4003c2554b9dfc4c16f22460b331886b191b

          SHA256

          f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

          SHA512

          d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

          Filesize

          944B

          MD5

          5cfe303e798d1cc6c1dab341e7265c15

          SHA1

          cd2834e05191a24e28a100f3f8114d5a7708dc7c

          SHA256

          c4d16552769ca1762f6867bce85589c645ac3dc490b650083d74f853f898cfab

          SHA512

          ef151bbe0033a2caf2d40aff74855a3f42c8171e05a11c8ce93c7039d9430482c43fe93d9164ee94839aff253cad774dbf619dde9a8af38773ca66d59ac3400e

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_v2hp24yr.kad.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Roaming\WizClient.exe

          Filesize

          74KB

          MD5

          69cad671f60367927329bbd20f91bed7

          SHA1

          9aa6c82982591ebc0c64cc94d2efaac7378bde86

          SHA256

          dc94e48f4fd4cdf8049e6ac2ea9b65df93936015c50e26d0c8d6b2217e7d539b

          SHA512

          bb4a49b2eada56d9d9c0fd7b7464447460e7bb84c6416f632295197562e65a456d33099799d3083684c45150ad362d036ee0eb843745272d5accab5ff9a525f4

        • memory/336-13-0x00007FF9430B0000-0x00007FF943B71000-memory.dmp

          Filesize

          10.8MB

        • memory/336-16-0x00007FF9430B0000-0x00007FF943B71000-memory.dmp

          Filesize

          10.8MB

        • memory/336-12-0x00007FF9430B0000-0x00007FF943B71000-memory.dmp

          Filesize

          10.8MB

        • memory/336-7-0x000001FA3A930000-0x000001FA3A952000-memory.dmp

          Filesize

          136KB

        • memory/1988-0-0x00007FF9430B3000-0x00007FF9430B5000-memory.dmp

          Filesize

          8KB

        • memory/1988-48-0x00007FF9430B0000-0x00007FF943B71000-memory.dmp

          Filesize

          10.8MB

        • memory/1988-49-0x00007FF9430B0000-0x00007FF943B71000-memory.dmp

          Filesize

          10.8MB

        • memory/1988-1-0x00000000001F0000-0x0000000000208000-memory.dmp

          Filesize

          96KB