Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-01-2023 07:35

General

  • Target

    7034c12131cc2e28fcf9235850a36b08e9983dce.exe

  • Size

    7KB

  • MD5

    1c72fb093ace75fffb093c6541ff4940

  • SHA1

    7034c12131cc2e28fcf9235850a36b08e9983dce

  • SHA256

    f00982603a693995cf32649df28ac390ce839638751f04d11517454466061785

  • SHA512

    4d713c85e2b5a818e3f5db4c7b59a820bb309c911825670b540597c9faa9d931f5648d054e19a01a48f7c97bae6dfe67b02148fb3ad58ddafdd11bb06f8a59ed

  • SSDEEP

    96:lTlsnKYgr+QLZCMqm18WQ2juY+wq+Df/8tEkajtR/zNt:lpQELZCMqmXjuZ+z8zaj7p

Malware Config

Extracted

Family

remcos

Botnet

28282

C2

194.180.49.17:28282

Attributes
  • audio_folder

    MicRecords

  • 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

    gqhwjekrltlu-TOU33Q

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
    "C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4872
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3652
    • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
      C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2576
      • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
        C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe /stext "C:\Users\Admin\AppData\Local\Temp\ooxjerjyumlxkjpxy"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2920
      • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
        C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe /stext "C:\Users\Admin\AppData\Local\Temp\yqduejusqudcupdjpzqs"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:3084
      • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
        C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe /stext "C:\Users\Admin\AppData\Local\Temp\bkinfbftdcvhxvznyjkueud"
        3⤵
          PID:3172
        • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
          C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe /stext "C:\Users\Admin\AppData\Local\Temp\bkinfbftdcvhxvznyjkueud"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2868

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\ooxjerjyumlxkjpxy

      Filesize

      4KB

      MD5

      52211867093eff778e3dc3df6d9c4134

      SHA1

      28a3a9f8b1120ebb1a0f9bd1dd50325260376c61

      SHA256

      4a636cc2c0d4458af6252981600557e0cd4cd52f55bae619532d4b3410457d8c

      SHA512

      b940818d2a90226f7b46f269f1d9828a9c7a0c543ae68f5dca18f8d2f1d1a7ea3808a573970c9bf3348a9215a81f5b889f3af0823b65e82ef345a9eefdde924a

    • memory/2576-144-0x0000000000000000-mapping.dmp

    • memory/2576-148-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2576-162-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2576-161-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2576-158-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2576-164-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2576-163-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2576-147-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2576-146-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2576-145-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2868-154-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2868-152-0x0000000000000000-mapping.dmp

    • memory/2920-149-0x0000000000000000-mapping.dmp

    • memory/2920-156-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2920-155-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3084-153-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/3084-150-0x0000000000000000-mapping.dmp

    • memory/3172-151-0x0000000000000000-mapping.dmp

    • memory/3652-140-0x0000000007380000-0x00000000079FA000-memory.dmp

      Filesize

      6.5MB

    • memory/3652-141-0x0000000006020000-0x000000000603A000-memory.dmp

      Filesize

      104KB

    • memory/3652-139-0x0000000005B40000-0x0000000005B5E000-memory.dmp

      Filesize

      120KB

    • memory/3652-138-0x0000000005500000-0x0000000005566000-memory.dmp

      Filesize

      408KB

    • memory/3652-137-0x0000000005420000-0x0000000005486000-memory.dmp

      Filesize

      408KB

    • memory/3652-136-0x0000000004C80000-0x00000000052A8000-memory.dmp

      Filesize

      6.2MB

    • memory/3652-135-0x0000000004580000-0x00000000045B6000-memory.dmp

      Filesize

      216KB

    • memory/3652-134-0x0000000000000000-mapping.dmp

    • memory/4872-142-0x0000000001260000-0x00000000012F2000-memory.dmp

      Filesize

      584KB

    • memory/4872-132-0x0000000000870000-0x0000000000878000-memory.dmp

      Filesize

      32KB

    • memory/4872-143-0x00000000078A0000-0x0000000007E44000-memory.dmp

      Filesize

      5.6MB

    • memory/4872-133-0x00000000066F0000-0x0000000006712000-memory.dmp

      Filesize

      136KB