Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/11/2024, 03:06

General

  • Target
    e588a098e9ceb33f2616e11a3faf28162e5f4b7f3800b22ab3023bc376aeb18c.exe
  • Size 1.2MB
  • Sample241125-dlxrha1lfl
  • SHA256 e588a098e9ceb33f2616e11a3faf28162e5f4b7f3800b22ab3023bc376aeb18c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 212.162.149.226:9285

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    AppUpdate

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-VCJ8ZS

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    AppUpdate

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Remcos family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • 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 12 IoCs

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

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e588a098e9ceb33f2616e11a3faf28162e5f4b7f3800b22ab3023bc376aeb18c.exe
    "C:\Users\Admin\AppData\Local\Temp\e588a098e9ceb33f2616e11a3faf28162e5f4b7f3800b22ab3023bc376aeb18c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1048
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\e588a098e9ceb33f2616e11a3faf28162e5f4b7f3800b22ab3023bc376aeb18c.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4404
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\iKgKaogJ.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1676
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iKgKaogJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp22C5.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3024
    • C:\Users\Admin\AppData\Local\Temp\e588a098e9ceb33f2616e11a3faf28162e5f4b7f3800b22ab3023bc376aeb18c.exe
      "C:\Users\Admin\AppData\Local\Temp\e588a098e9ceb33f2616e11a3faf28162e5f4b7f3800b22ab3023bc376aeb18c.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:2452
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4232
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\AppUpdate\remcos.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3140
          • C:\ProgramData\AppUpdate\remcos.exe
            C:\ProgramData\AppUpdate\remcos.exe
            5⤵
            • Checks computer location settings
            • 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:1444
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\ProgramData\AppUpdate\remcos.exe"
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2872
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\iKgKaogJ.exe"
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:548
            • C:\Windows\SysWOW64\schtasks.exe
              "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iKgKaogJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9C5A.tmp"
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:4556
            • C:\ProgramData\AppUpdate\remcos.exe
              "C:\ProgramData\AppUpdate\remcos.exe"
              6⤵
              • Executes dropped EXE
              PID:32
            • C:\ProgramData\AppUpdate\remcos.exe
              "C:\ProgramData\AppUpdate\remcos.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • System Location Discovery: System Language Discovery
              PID:644

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        remcos.exe

        • Path C:\ProgramData\AppUpdate\remcos.exe
        • Size 1.2MB
        • SHA256 e588a098e9ceb33f2616e11a3faf28162e5f4b7f3800b22ab3023bc376aeb18c
        • MD5 SHA1 SHA512 SSDEEP

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 18KB
        • SHA256 137ea17596e7ed13b629a69fae13704df44e3c69f19a45b8f3a64a9747362cab
        • MD5 SHA1 SHA512 SSDEEP

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 793B
        • SHA256 6d0275e9b030f76eba352ceccc35bc9a0c1aaf0e17f302192aef09fb835f388a
        • MD5 SHA1 SHA512

        __PSScriptPolicyTest_30kuemug.eqz.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_30kuemug.eqz.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        install.vbs

        • Path C:\Users\Admin\AppData\Local\Temp\install.vbs
        • Size 392B
        • SHA256 04f4edc28e97a16f93cf7acac864aba17cc467282550ae61baac719262be6f5e
        • MD5 SHA1 SHA512

        tmp22C5.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp22C5.tmp
        • Size 1KB
        • SHA256 3add9d82d6a22817675ce92419e9fc47d48918ae94ce8f65c6a17ed8489270a8
        • MD5 SHA1 SHA512

        memory/548-144-0x0000000075200000-0x000000007524C000-memory.dmp

        memory/644-106-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/644-132-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/644-117-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/644-164-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/644-163-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/644-162-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/644-161-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/644-112-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/644-130-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/644-155-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/644-131-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/1048-8-0x000000007497E000-0x000000007497F000-memory.dmp

        memory/1048-6-0x0000000074970000-0x0000000075120000-memory.dmp

        memory/1048-7-0x0000000005BB0000-0x0000000005BC2000-memory.dmp

        memory/1048-5-0x0000000005D30000-0x0000000005DCC000-memory.dmp

        memory/1048-4-0x0000000005A40000-0x0000000005A4A000-memory.dmp

        memory/1048-0-0x000000007497E000-0x000000007497F000-memory.dmp

        memory/1048-9-0x0000000074970000-0x0000000075120000-memory.dmp

        memory/1048-51-0x0000000074970000-0x0000000075120000-memory.dmp

        memory/1048-10-0x00000000071F0000-0x00000000072B0000-memory.dmp

        memory/1048-3-0x0000000005AB0000-0x0000000005B42000-memory.dmp

        memory/1048-2-0x0000000006060000-0x0000000006604000-memory.dmp

        memory/1048-1-0x0000000000F00000-0x0000000001032000-memory.dmp

        memory/1444-98-0x0000000005790000-0x00000000057A2000-memory.dmp

        memory/1676-60-0x0000000006EB0000-0x0000000006EE2000-memory.dmp

        memory/1676-89-0x0000000007260000-0x0000000007274000-memory.dmp

        memory/1676-61-0x0000000072030000-0x000000007207C000-memory.dmp

        memory/1676-19-0x0000000074970000-0x0000000075120000-memory.dmp

        memory/1676-72-0x0000000006EF0000-0x0000000006F93000-memory.dmp

        memory/1676-83-0x0000000007660000-0x0000000007CDA000-memory.dmp

        memory/1676-84-0x0000000007020000-0x000000000703A000-memory.dmp

        memory/1676-85-0x0000000007090000-0x000000000709A000-memory.dmp

        memory/1676-86-0x00000000072A0000-0x0000000007336000-memory.dmp

        memory/1676-27-0x0000000074970000-0x0000000075120000-memory.dmp

        memory/1676-71-0x00000000062A0000-0x00000000062BE000-memory.dmp

        memory/1676-24-0x0000000074970000-0x0000000075120000-memory.dmp

        memory/1676-96-0x0000000074970000-0x0000000075120000-memory.dmp

        memory/1676-91-0x0000000007340000-0x0000000007348000-memory.dmp

        memory/2452-38-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/2452-33-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/2872-143-0x0000000007240000-0x00000000072E3000-memory.dmp

        memory/2872-156-0x0000000007580000-0x0000000007591000-memory.dmp

        memory/2872-133-0x0000000075200000-0x000000007524C000-memory.dmp

        memory/2872-104-0x00000000059D0000-0x0000000005D24000-memory.dmp

        memory/2872-157-0x00000000075C0000-0x00000000075D4000-memory.dmp

        memory/2872-129-0x0000000006570000-0x00000000065BC000-memory.dmp

        memory/4404-88-0x0000000007930000-0x000000000793E000-memory.dmp

        memory/4404-25-0x0000000074970000-0x0000000075120000-memory.dmp

        memory/4404-22-0x0000000005D10000-0x0000000005D76000-memory.dmp

        memory/4404-26-0x0000000005DF0000-0x0000000006144000-memory.dmp

        memory/4404-55-0x00000000063D0000-0x00000000063EE000-memory.dmp

        memory/4404-97-0x0000000074970000-0x0000000075120000-memory.dmp

        memory/4404-56-0x0000000006910000-0x000000000695C000-memory.dmp

        memory/4404-23-0x0000000005D80000-0x0000000005DE6000-memory.dmp

        memory/4404-21-0x0000000005510000-0x0000000005532000-memory.dmp

        memory/4404-90-0x0000000007A40000-0x0000000007A5A000-memory.dmp

        memory/4404-87-0x0000000007900000-0x0000000007911000-memory.dmp

        memory/4404-73-0x0000000072030000-0x000000007207C000-memory.dmp

        memory/4404-17-0x00000000056E0000-0x0000000005D08000-memory.dmp

        memory/4404-18-0x0000000074970000-0x0000000075120000-memory.dmp

        memory/4404-16-0x0000000074970000-0x0000000075120000-memory.dmp

        memory/4404-15-0x0000000002AC0000-0x0000000002AF6000-memory.dmp