Overview

overview

10

Static

static

10

FROZENLOADER.lol.exe

windows7-x64

10

FROZENLOADER.lol.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    20s
  • max time network
    25s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 01:28

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General

  • Target
    FROZENLOADER.lol.exe
  • Size 41KB
  • Sample240530-bvt1vshe61
  • SHA256 17fbbdbef331b237cd11a2744937e9c75e3b65f0180869a64b37bd3624a27394
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
xwormexecutionpersistencerattrojan

Malware Config

Extracted

Family

  • xworm

Version

  • 5.0

C2

  • 127.0.0.1:7000

  • 192.168.0.247:7000

  • 98.160.133.172:7000

Mutex

  • Np311RwRmY3E1pmV

Attributes
  • Install_directory

    %Public%

  • install_file

    svchost.exe

aes.plain

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • 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.

    execution
  • 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 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe
    "C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.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:4904
    • 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\FROZENLOADER.lol.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4872
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'FROZENLOADER.lol.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4896
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\svchost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4840
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3732
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Public\svchost.exe"
      2⤵
      • Creates scheduled task(s)
      PID:1800
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3592

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        powershell.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
        • MD5 SHA1 SHA512
        Submit Download

        StartupProfileData-NonInteractive
        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 944B
        • SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
        • MD5 SHA1 SHA512
        Submit Download

        StartupProfileData-NonInteractive
        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 944B
        • SHA256 520ade0268c7c6f70f4a51fc9355bafb653c7b89cacd4b1b3c571a7c839bde25
        • MD5 SHA1 SHA512
        Submit Download

        StartupProfileData-NonInteractive
        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 944B
        • SHA256 55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf
        • MD5 SHA1 SHA512
        Submit Download

        __PSScriptPolicyTest_5aunbiis.elj.ps1
        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5aunbiis.elj.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512
        Submit Download

        svchost.exe
        • Path C:\Users\Public\svchost.exe
        • Size 41KB
        • SHA256 17fbbdbef331b237cd11a2744937e9c75e3b65f0180869a64b37bd3624a27394
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/4872-8-0x000001EF54100000-0x000001EF54122000-memory.dmp
        Download

        memory/4872-15-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp
        Download

        memory/4872-18-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp
        Download

        memory/4872-14-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp
        Download

        memory/4872-13-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp
        Download

        memory/4904-1-0x00007FFD5DB13000-0x00007FFD5DB15000-memory.dmp
        Download

        memory/4904-2-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp
        Download

        memory/4904-0-0x0000000000F40000-0x0000000000F50000-memory.dmp
        Download