Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/10/2022, 18:29

General

  • Target
    file.exe
  • Size 603KB
  • Sample221024-w4ww2aaae7
  • SHA256 49d6552ae5c5027ce1e68edee2438564b50ddc384276fd97360c92503771d3ac
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • icexloader

C2
  • http://stealthelite.one/magnumopus/Script.php

Signatures

  • Detects IceXLoader v3.0 6 IoCs
  • icexloader

    IceXLoader is a downloader used to deliver other malware families.

  • Executes dropped EXE 4 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 17 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:5000
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\STOREM~2.EXE
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\STOREM~2.EXE
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:972
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwA1AA==
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1396
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\STOREM~2.EXE
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\STOREM~2.EXE
        3⤵
        • Executes dropped EXE
        • Drops startup file
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:4252
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c timeout 2 & "C:\Users\Admin\AppData\Roaming\Opus.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1988
          • C:\Windows\SysWOW64\timeout.exe
            timeout 2
            5⤵
            • Delays execution with timeout.exe
            PID:3428
          • C:\Users\Admin\AppData\Roaming\Opus.exe
            "C:\Users\Admin\AppData\Roaming\Opus.exe"
            5⤵
            • Executes dropped EXE
            • Checks computer location settings
            • Suspicious use of SetThreadContext
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1604
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwA1AA==
              6⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:808
            • C:\Users\Admin\AppData\Roaming\Opus.exe
              C:\Users\Admin\AppData\Roaming\Opus.exe
              6⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              PID:2840
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c "C:\Users\Admin\AppData\Local\Temp\file.bat"
                7⤵
                  PID:1280
                  • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                    powershell -Command Set-MpPreference -DisableRealtimeMonitoring $true
                    8⤵
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3732
                  • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                    powershell -Command Add-MpPreference -ExclusionExtension "C:\Users\Admin\AppData\Roaming\Opus\.exe"
                    8⤵
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1004
                  • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                    powershell -Command Add-MpPreference -ExclusionPath "C:\Users\Admin"
                    8⤵
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:2276
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c timeout 1 & del /F "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\STOREM~2.EXE"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:4120
            • C:\Windows\SysWOW64\timeout.exe
              timeout 1
              5⤵
              • Delays execution with timeout.exe
              PID:2272

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          powershell.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
          • Size 1KB
          • SHA256 e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359
          • MD5 SHA1 SHA512

          ModuleAnalysisCache

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
          • Size 53KB
          • SHA256 474813b625f00710f29fa3b488235a6a22201851efb336bddf60d7d24a66bfba
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 16KB
          • SHA256 ffb4bfa8295e76f06c9f305d0bb10353bea91f657cb0b7b78e4459505168298b
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 15KB
          • SHA256 db29c5476fdc368dcb9ad47d2e1114275688a928ef790ae04a9cbe90b0a4a7b6
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 18KB
          • SHA256 116e2f118c59576ba00801a5458177cd349c6a65ea29fdc611cf94cb25439290
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 18KB
          • SHA256 9d9ad98632209e113bdcd33fe797dccb392c24859f4fd09d2384448a2a61b63c
          • MD5 SHA1 SHA512 SSDEEP

          STOREM~2.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\STOREM~2.EXE
          • Size 343.3MB
          • SHA256 7bb69f98d77ca7609c10b9a0ab1ce32be2e26b160413203d5335f65c1bc8ee72
          • MD5 SHA1 SHA512 SSDEEP

          STOREM~2.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\STOREM~2.EXE
          • Size 343.3MB
          • SHA256 7bb69f98d77ca7609c10b9a0ab1ce32be2e26b160413203d5335f65c1bc8ee72
          • MD5 SHA1 SHA512 SSDEEP

          STOREM~2.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\STOREM~2.EXE
          • Size 343.3MB
          • SHA256 7bb69f98d77ca7609c10b9a0ab1ce32be2e26b160413203d5335f65c1bc8ee72
          • MD5 SHA1 SHA512 SSDEEP

          file.bat

          • Path C:\Users\Admin\AppData\Local\Temp\file.bat
          • Size 238B
          • SHA256 898bc3e85e09e353a36612b5911aa2636c06a94443dbec4e62c6b8cf2412640c
          • MD5 SHA1 SHA512

          Opus.exe

          • Path C:\Users\Admin\AppData\Roaming\Opus.exe
          • Size 343.3MB
          • SHA256 7bb69f98d77ca7609c10b9a0ab1ce32be2e26b160413203d5335f65c1bc8ee72
          • MD5 SHA1 SHA512 SSDEEP

          Opus.exe

          • Path C:\Users\Admin\AppData\Roaming\Opus.exe
          • Size 343.3MB
          • SHA256 7bb69f98d77ca7609c10b9a0ab1ce32be2e26b160413203d5335f65c1bc8ee72
          • MD5 SHA1 SHA512 SSDEEP

          Opus.exe

          • Path C:\Users\Admin\AppData\Roaming\Opus.exe
          • Size 343.3MB
          • SHA256 7bb69f98d77ca7609c10b9a0ab1ce32be2e26b160413203d5335f65c1bc8ee72
          • MD5 SHA1 SHA512 SSDEEP

          memory/972-135-0x0000000000E40000-0x0000000000E48000-memory.dmp

          memory/972-136-0x0000000006660000-0x0000000006682000-memory.dmp

          memory/1004-184-0x0000000070390000-0x00000000703DC000-memory.dmp

          memory/1396-141-0x00000000057B0000-0x0000000005816000-memory.dmp

          memory/1396-139-0x0000000004DF0000-0x0000000005418000-memory.dmp

          memory/1396-138-0x0000000004600000-0x0000000004636000-memory.dmp

          memory/1396-140-0x0000000004D60000-0x0000000004DC6000-memory.dmp

          memory/1396-142-0x0000000005B90000-0x0000000005BAE000-memory.dmp

          memory/1396-143-0x00000000071D0000-0x000000000784A000-memory.dmp

          memory/1396-144-0x0000000006070000-0x000000000608A000-memory.dmp

          memory/2276-187-0x0000000070390000-0x00000000703DC000-memory.dmp

          memory/2840-168-0x0000000000400000-0x0000000000451000-memory.dmp

          memory/2840-181-0x0000000000400000-0x0000000000451000-memory.dmp

          memory/3732-175-0x0000000006CB0000-0x0000000006CCE000-memory.dmp

          memory/3732-180-0x0000000007C20000-0x0000000007C28000-memory.dmp

          memory/3732-173-0x00000000076B0000-0x00000000076E2000-memory.dmp

          memory/3732-176-0x0000000007A60000-0x0000000007A6A000-memory.dmp

          memory/3732-177-0x0000000007C80000-0x0000000007D16000-memory.dmp

          memory/3732-178-0x0000000007A80000-0x0000000007A8E000-memory.dmp

          memory/3732-179-0x0000000007C30000-0x0000000007C4A000-memory.dmp

          memory/3732-174-0x0000000070390000-0x00000000703DC000-memory.dmp

          memory/4252-153-0x0000000000400000-0x0000000000451000-memory.dmp

          memory/4252-150-0x0000000000400000-0x0000000000451000-memory.dmp

          memory/4252-149-0x0000000000400000-0x0000000000451000-memory.dmp

          memory/4252-146-0x0000000000400000-0x0000000000451000-memory.dmp