Analysis

  • max time kernel
    153s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    15-09-2021 06:59

General

  • Target

    59ad488cab3f76d9255b2e853385858a.exe

  • Size

    817KB

  • MD5

    59ad488cab3f76d9255b2e853385858a

  • SHA1

    af226bd2ec812c5e8d8b6b82816a945dc1cde3d3

  • SHA256

    69602c57c04a253c515050483eb532b5be82ab598e7b1d3ea421310cee29c895

  • SHA512

    403d0dd209eb764886587867a00383b6dfff84d360661eabeca4a4986851c73e38c3c55aafb5ec91ec3dd6bfbe5d243afa492e66b358f883852c4a910c61734c

Malware Config

Extracted

Family

remcos

Version

3.2.0 Pro

Botnet

PANDA

C2

emedoo.ddns.net:35890

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Vlc

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-XW1HN6

  • 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

  • take_screenshot_title

    notepad;solitaire;

Signatures

  • Remcos

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\59ad488cab3f76d9255b2e853385858a.exe
    "C:\Users\Admin\AppData\Local\Temp\59ad488cab3f76d9255b2e853385858a.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1820
    • C:\Windows\SysWOW64\logagent.exe
      C:\Windows\System32\logagent.exe
      2⤵
        PID:816
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Public\Trast.bat" "
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1488
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /K C:\Users\Public\UKO.bat
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:300
          • C:\Windows\SysWOW64\reg.exe
            reg delete hkcu\Environment /v windir /f
            4⤵
            • Modifies registry key
            PID:904
          • C:\Windows\SysWOW64\reg.exe
            reg add hkcu\Environment /v windir /d "cmd /c start /min C:\Users\Public\KDECO.bat reg delete hkcu\Environment /v windir /f && REM "
            4⤵
            • Modifies registry key
            PID:652
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
            4⤵
              PID:1728
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c ""C:\Users\Public\nest.bat" "
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:744
          • C:\Windows\SysWOW64\reg.exe
            reg delete hkcu\Environment /v windir /f
            3⤵
            • Modifies registry key
            PID:1600

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Defense Evasion

      Modify Registry

      2
      T1112

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Public\Trast.bat
        MD5

        4068c9f69fcd8a171c67f81d4a952a54

        SHA1

        4d2536a8c28cdcc17465e20d6693fb9e8e713b36

        SHA256

        24222300c78180b50ed1f8361ba63cb27316ec994c1c9079708a51b4a1a9d810

        SHA512

        a64f9319acc51fffd0491c74dcd9c9084c2783b82f95727e4bfe387a8528c6dcf68f11418e88f1e133d115daf907549c86dd7ad866b2a7938add5225fbb2811d

      • C:\Users\Public\UKO.bat
        MD5

        eaf8d967454c3bbddbf2e05a421411f8

        SHA1

        6170880409b24de75c2dc3d56a506fbff7f6622c

        SHA256

        f35f2658455a2e40f151549a7d6465a836c33fa9109e67623916f889849eac56

        SHA512

        fe5be5c673e99f70c93019d01abb0a29dd2ecf25b2d895190ff551f020c28e7d8f99f65007f440f0f76c5bcac343b2a179a94d190c938ea3b9e1197890a412e9

      • C:\Users\Public\nest.bat
        MD5

        8ada51400b7915de2124baaf75e3414c

        SHA1

        1a7b9db12184ab7fd7fce1c383f9670a00adb081

        SHA256

        45aa3957c29865260a78f03eef18ae9aebdbf7bea751ecc88be4a799f2bb46c7

        SHA512

        9afc138157a4565294ca49942579cdb6f5d8084e56f9354738de62b585f4c0fa3e7f2cbc9541827f2084e3ff36c46eed29b46f5dd2444062ffcd05c599992e68

      • memory/300-70-0x0000000000000000-mapping.dmp
      • memory/652-73-0x0000000000000000-mapping.dmp
      • memory/744-79-0x0000000000000000-mapping.dmp
      • memory/816-76-0x00000000001B0000-0x00000000001B1000-memory.dmp
        Filesize

        4KB

      • memory/816-65-0x0000000000000000-mapping.dmp
      • memory/816-66-0x0000000000100000-0x0000000000101000-memory.dmp
        Filesize

        4KB

      • memory/816-78-0x00000000001C0000-0x0000000000239000-memory.dmp
        Filesize

        484KB

      • memory/816-77-0x0000000010590000-0x000000001060C000-memory.dmp
        Filesize

        496KB

      • memory/816-75-0x0000000000140000-0x0000000000141000-memory.dmp
        Filesize

        4KB

      • memory/904-72-0x0000000000000000-mapping.dmp
      • memory/1488-67-0x0000000000000000-mapping.dmp
      • memory/1600-81-0x0000000000000000-mapping.dmp
      • memory/1728-74-0x0000000000000000-mapping.dmp
      • memory/1820-60-0x0000000000220000-0x0000000000221000-memory.dmp
        Filesize

        4KB

      • memory/1820-64-0x0000000076641000-0x0000000076643000-memory.dmp
        Filesize

        8KB