Analysis

  • max time kernel
    148s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-12-2024 20:30

General

  • Target

    WO-663071 Sabiya Power Station Project.vbs

  • Size

    2KB

  • MD5

    29e1bb22ea494b25e915d1b72b50bfc8

  • SHA1

    37b7b92709d22bfe4ae4c18258c3cf6751ae53d2

  • SHA256

    9d5fab129071f6d09f1d45e80991c60459680aab2e6591f8b2cec9909e37a5eb

  • SHA512

    5ac2953bf6868f7a99bcd97efd75d5fe679649ed7b796918e23f7f90a2441715034594c2080f02a2e80c22153b04a14fa3650bd2f8f732f91808864bbe8d6e30

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

162.251.122.87:2404

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

    Rmc-UOMZ21

  • 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 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\WO-663071 Sabiya Power Station Project.vbs"
    1⤵
    • Blocklisted process makes network request
    • Checks computer location settings
    • Drops startup file
    • Suspicious use of WriteProcessMemory
    PID:2264
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy RemoteSigned -File "C:\Temp\dddddd.ps1"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2636
      • C:\Users\Admin\AppData\Local\Temp\x.exe
        "C:\Users\Admin\AppData\Local\Temp\x.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:5068
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
          4⤵
            PID:1624
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:5072

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      144B

      MD5

      993bb737938dc93bb9a9ff564b2f8582

      SHA1

      48ddcc0c1d958e77198ada712bee68e8eb9f3da7

      SHA256

      9e5f1b1e9918af9de37f3977d017fb29ab333b900f15d0bd8cea79bbd3f5ce49

      SHA512

      8824e021f81983c2bc78564250c5fe7cad3cbff6cbeaab70e2ee4bf5c683b1535dc24b71b9caf52d0e0a749a2c6d2577dfcac261438f4c9b0d47c7eae47383e0

    • C:\Temp\dddddd.ps1

      Filesize

      701KB

      MD5

      cf9811311721d98ced8580790789851b

      SHA1

      5d90e48e9508e7d01b2472f818b42570e1252fdb

      SHA256

      586bb76a51dc382f8df76aebaedd944f262fc2cb0b5d328f069a8708f2a6679e

      SHA512

      dc8aaf19002413b0bc9f6374b6da913e0f5e995922fcb1390c4b65aed3503a1fdb19870a84c0d8ab785992b9f58849520a4b2535b22bd67907a12efb0bc553a0

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1kpef5vv.pcy.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\x.exe

      Filesize

      526KB

      MD5

      2c248753c0d81181227bb95c0bc614cf

      SHA1

      86a24f456da864a009edbc5b3a95877fcb9479a4

      SHA256

      65ec50ac4d13e4386d497e33d20d5e679a0460727795eb3e8a2f7dfecdf8c4f3

      SHA512

      f22685e9da58f9a044799a527cb5a9e1da3067875ebc8e4fd4200a4647918a5b1241b4c05aa964b8615ca8f03a99006da69d30935dcee80d2959183daf29fa40

    • memory/2636-11-0x00007FF98C663000-0x00007FF98C665000-memory.dmp

      Filesize

      8KB

    • memory/2636-12-0x0000027241D00000-0x0000027241D22000-memory.dmp

      Filesize

      136KB

    • memory/2636-22-0x00007FF98C660000-0x00007FF98D121000-memory.dmp

      Filesize

      10.8MB

    • memory/2636-23-0x00007FF98C660000-0x00007FF98D121000-memory.dmp

      Filesize

      10.8MB

    • memory/2636-39-0x00007FF98C660000-0x00007FF98D121000-memory.dmp

      Filesize

      10.8MB

    • memory/5068-38-0x00000000002B0000-0x000000000033A000-memory.dmp

      Filesize

      552KB

    • memory/5072-49-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-40-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-46-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-43-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-42-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-48-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-50-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-54-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-55-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-47-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-62-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-63-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-70-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-71-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-79-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-78-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-86-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/5072-87-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB