Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    22-06-2024 03:01

General

  • Target

    a788a5b401661ff1c3eedd21d679ccaf39a35cb1a5a814773b1e4ded48de890c.exe

  • Size

    121KB

  • MD5

    5ad0a139daa10def6783d34a578882eb

  • SHA1

    8cbeb48832356f7cff9b1370ece879d72b8eb156

  • SHA256

    a788a5b401661ff1c3eedd21d679ccaf39a35cb1a5a814773b1e4ded48de890c

  • SHA512

    2cbd28e71e57b1fa051231565074afeaaacb6332c831e861be45e98eab1d1f1fc0519ddbace3f2f2f24d9a97d8dd767bcfadd827dfb81e960bcc7b73cb5b3b84

  • SSDEEP

    1536:S0DwewicrbsN/YVRrNRF49IG6iOwjaClJEHIl7pmhaKI:S0DweDN/kr/F49IaOw5Ch0

Malware Config

Extracted

Family

xworm

Version

5.0

C2

sekoneko.zapto.org:1111

Mutex

epkUNO9aHruE9KEn

Attributes
  • Install_directory

    %AppData%

  • install_file

    win64.exe

aes.plain

Signatures

  • Detect Xworm Payload 4 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
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 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\a788a5b401661ff1c3eedd21d679ccaf39a35cb1a5a814773b1e4ded48de890c.exe
    "C:\Users\Admin\AppData\Local\Temp\a788a5b401661ff1c3eedd21d679ccaf39a35cb1a5a814773b1e4ded48de890c.exe"
    1⤵
    • 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:2716
    • 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\a788a5b401661ff1c3eedd21d679ccaf39a35cb1a5a814773b1e4ded48de890c.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2784
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'a788a5b401661ff1c3eedd21d679ccaf39a35cb1a5a814773b1e4ded48de890c.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\win64.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2936
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'win64.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2780
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "win64" /tr "C:\Users\Admin\AppData\Roaming\win64.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2328
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {834A401C-7A77-4CF9-900E-BC881F4C0416} S-1-5-21-268080393-3149932598-1824759070-1000:UHRQKJCP\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Users\Admin\AppData\Roaming\win64.exe
      C:\Users\Admin\AppData\Roaming\win64.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1476
    • C:\Users\Admin\AppData\Roaming\win64.exe
      C:\Users\Admin\AppData\Roaming\win64.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1736

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    7KB

    MD5

    0aa4812d0baa902d93c91d0abb0ad24f

    SHA1

    a409831639979d9eada58086337ed8d95fb6a885

    SHA256

    33af2dd9e6383720afcc2ab8b6f05b6138836d6480372017693259665a2e0b3d

    SHA512

    235566fe347c97ea0379412617cdc6fae932f969c5fa046499e91b0d9c95c398fa09754f23d9a9d5b4daa665848d5faa729a9b8becda2640a3c1b54f2b214696

  • C:\Users\Admin\AppData\Roaming\win64.exe

    Filesize

    121KB

    MD5

    5ad0a139daa10def6783d34a578882eb

    SHA1

    8cbeb48832356f7cff9b1370ece879d72b8eb156

    SHA256

    a788a5b401661ff1c3eedd21d679ccaf39a35cb1a5a814773b1e4ded48de890c

    SHA512

    2cbd28e71e57b1fa051231565074afeaaacb6332c831e861be45e98eab1d1f1fc0519ddbace3f2f2f24d9a97d8dd767bcfadd827dfb81e960bcc7b73cb5b3b84

  • memory/1476-36-0x0000000000DE0000-0x0000000000E04000-memory.dmp

    Filesize

    144KB

  • memory/1736-39-0x0000000001210000-0x0000000001234000-memory.dmp

    Filesize

    144KB

  • memory/2208-16-0x000000001B620000-0x000000001B902000-memory.dmp

    Filesize

    2.9MB

  • memory/2208-17-0x0000000001DB0000-0x0000000001DB8000-memory.dmp

    Filesize

    32KB

  • memory/2716-1-0x0000000000EE0000-0x0000000000F04000-memory.dmp

    Filesize

    144KB

  • memory/2716-2-0x000007FEF5E60000-0x000007FEF684C000-memory.dmp

    Filesize

    9.9MB

  • memory/2716-0-0x000007FEF5E63000-0x000007FEF5E64000-memory.dmp

    Filesize

    4KB

  • memory/2716-7-0x000007FEF5E63000-0x000007FEF5E64000-memory.dmp

    Filesize

    4KB

  • memory/2716-32-0x000007FEF5E60000-0x000007FEF684C000-memory.dmp

    Filesize

    9.9MB

  • memory/2784-8-0x0000000002970000-0x00000000029F0000-memory.dmp

    Filesize

    512KB

  • memory/2784-10-0x00000000021D0000-0x00000000021D8000-memory.dmp

    Filesize

    32KB

  • memory/2784-9-0x000000001B690000-0x000000001B972000-memory.dmp

    Filesize

    2.9MB