Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230621-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/06/2023, 14:20

General

  • Target

    PhotoLenawwwonlyfanscomht.hta

  • Size

    2.2MB

  • MD5

    1712096de4eb3903b8a96344654a8c2e

  • SHA1

    059376a2ee0683a47d85f3a7fa5425c1c52aebd8

  • SHA256

    c73dd00623cd37f39e0f9af1deb4887240645255b9f9032ef76d95d5fa13b25d

  • SHA512

    bd91238d234b31cbcd8907d80b2561d0bd518a25d494b7420caabc18f702264fd0cf3882173c09899188453850d4fc016ab250cadfe4afe7b0c2f696e01b295b

  • SSDEEP

    1536:cXO5XO5XON8HYeCS2oGZxWhtfjefXUxkEErYTSZCuSCU7MHvf/H7HLL7Mba4wzFv:n

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

141.95.84.40:4010

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

    Rmc-6YSYT9

  • 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.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 2 IoCs
  • Loads dropped DLL 5 IoCs
  • Registers COM server for autorun 1 TTPs 8 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 3 IoCs
  • Modifies registry class 21 IoCs
  • Suspicious use of WriteProcessMemory 57 IoCs

Processes

  • C:\Windows\SysWOW64\mshta.exe
    C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\PhotoLenawwwonlyfanscomht.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1372
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\temp_1687875653581.vbs"
      2⤵
      • Checks computer location settings
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:3212
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\System32\regsvr32.exe" /I /S "C:\Users\Admin\AppData\Local\Temp\dynwrapx.dll"
        3⤵
        • Loads dropped DLL
        • Registers COM server for autorun
        • Modifies registry class
        PID:1212
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        3⤵
          PID:4512
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 80
            4⤵
            • Program crash
            PID:2764
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 88
            4⤵
            • Program crash
            PID:3940
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 116
            4⤵
            • Program crash
            PID:1520
        • C:\Windows\SysWOW64\regsvr32.exe
          "C:\Windows\System32\regsvr32.exe" /I /S "C:\Users\Admin\AppData\Local\Temp\dynwrapx.dll"
          3⤵
          • Loads dropped DLL
          • Registers COM server for autorun
          • Modifies registry class
          PID:3900
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          3⤵
            PID:1536
          • C:\Windows\SysWOW64\regsvr32.exe
            "C:\Windows\System32\regsvr32.exe" /I /S "C:\Users\Admin\AppData\Local\Temp\dynwrapx.dll"
            3⤵
            • Loads dropped DLL
            • Registers COM server for autorun
            • Modifies registry class
            PID:3992
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            3⤵
              PID:1596
            • C:\Windows\SysWOW64\regsvr32.exe
              "C:\Windows\System32\regsvr32.exe" /I /S "C:\Users\Admin\AppData\Local\Temp\dynwrapx.dll"
              3⤵
              • Loads dropped DLL
              • Registers COM server for autorun
              • Modifies registry class
              PID:3264
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
              3⤵
                PID:1200
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4512 -ip 4512
            1⤵
              PID:3784
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 4512 -ip 4512
              1⤵
                PID:3324
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4512 -ip 4512
                1⤵
                  PID:3936

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\Users\Admin\AppData\Local\Temp\dynwrapx.dll

                  Filesize

                  13KB

                  MD5

                  e0b8dfd17b8e7de760b273d18e58b142

                  SHA1

                  801509fb6783c9e57edc67a72dde3c62080ffbaf

                  SHA256

                  4ef3a6703abc6b2b8e2cac3031c1e5b86fe8b377fde92737349ee52bd2604379

                  SHA512

                  443359da27b3c87e81ae4f4b9a2ab7e7bf6abfa93551fc62347a0b79b36d79635131abc14d4deddab3ace12fdf973496518f67e1be8dc4903b35fd465835556b

                • C:\Users\Admin\AppData\Local\Temp\dynwrapx.dll

                  Filesize

                  13KB

                  MD5

                  e0b8dfd17b8e7de760b273d18e58b142

                  SHA1

                  801509fb6783c9e57edc67a72dde3c62080ffbaf

                  SHA256

                  4ef3a6703abc6b2b8e2cac3031c1e5b86fe8b377fde92737349ee52bd2604379

                  SHA512

                  443359da27b3c87e81ae4f4b9a2ab7e7bf6abfa93551fc62347a0b79b36d79635131abc14d4deddab3ace12fdf973496518f67e1be8dc4903b35fd465835556b

                • C:\Users\Admin\AppData\Local\Temp\dynwrapx.dll

                  Filesize

                  13KB

                  MD5

                  e0b8dfd17b8e7de760b273d18e58b142

                  SHA1

                  801509fb6783c9e57edc67a72dde3c62080ffbaf

                  SHA256

                  4ef3a6703abc6b2b8e2cac3031c1e5b86fe8b377fde92737349ee52bd2604379

                  SHA512

                  443359da27b3c87e81ae4f4b9a2ab7e7bf6abfa93551fc62347a0b79b36d79635131abc14d4deddab3ace12fdf973496518f67e1be8dc4903b35fd465835556b

                • C:\Users\Admin\AppData\Local\Temp\dynwrapx.dll

                  Filesize

                  13KB

                  MD5

                  e0b8dfd17b8e7de760b273d18e58b142

                  SHA1

                  801509fb6783c9e57edc67a72dde3c62080ffbaf

                  SHA256

                  4ef3a6703abc6b2b8e2cac3031c1e5b86fe8b377fde92737349ee52bd2604379

                  SHA512

                  443359da27b3c87e81ae4f4b9a2ab7e7bf6abfa93551fc62347a0b79b36d79635131abc14d4deddab3ace12fdf973496518f67e1be8dc4903b35fd465835556b

                • C:\Users\Admin\AppData\Local\Temp\dynwrapx.dll

                  Filesize

                  13KB

                  MD5

                  e0b8dfd17b8e7de760b273d18e58b142

                  SHA1

                  801509fb6783c9e57edc67a72dde3c62080ffbaf

                  SHA256

                  4ef3a6703abc6b2b8e2cac3031c1e5b86fe8b377fde92737349ee52bd2604379

                  SHA512

                  443359da27b3c87e81ae4f4b9a2ab7e7bf6abfa93551fc62347a0b79b36d79635131abc14d4deddab3ace12fdf973496518f67e1be8dc4903b35fd465835556b

                • C:\Users\Admin\AppData\Local\Temp\dynwrapx.dll

                  Filesize

                  13KB

                  MD5

                  e0b8dfd17b8e7de760b273d18e58b142

                  SHA1

                  801509fb6783c9e57edc67a72dde3c62080ffbaf

                  SHA256

                  4ef3a6703abc6b2b8e2cac3031c1e5b86fe8b377fde92737349ee52bd2604379

                  SHA512

                  443359da27b3c87e81ae4f4b9a2ab7e7bf6abfa93551fc62347a0b79b36d79635131abc14d4deddab3ace12fdf973496518f67e1be8dc4903b35fd465835556b

                • C:\Users\Admin\AppData\Local\Temp\temp_1687875653581.vbs

                  Filesize

                  1.1MB

                  MD5

                  b92ecfcad42f8611fde924db98875e06

                  SHA1

                  3503c3b3e39564290964cfbf5f011d9e61efc7e4

                  SHA256

                  069063d2e9f7fa975ba80f6d6aa71ad919f4e37ec9a76d60beb618a4666eda9e

                  SHA512

                  39aa0eb3cf722a351ed5172e5d766d6dd3ed4f13c97ad19899a74674656aae58e98cab2930dbcc33f5ab992103d1c2222d0dc0ed3fae14c3b86ca035bb26d5b3

                • memory/1200-163-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1200-161-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1200-160-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-178-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-185-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-214-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-213-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-212-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-211-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-148-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-210-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-158-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-145-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-144-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-143-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-166-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-167-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-168-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-169-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-170-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-171-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-172-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-173-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-174-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-175-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-176-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-177-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-209-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-179-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-180-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-181-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-182-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-183-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-184-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-149-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-186-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-187-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-188-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-189-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-190-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-191-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-192-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-193-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-194-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-195-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-196-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-197-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-198-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-199-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-200-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-201-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-202-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-203-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-204-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-205-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-206-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-207-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1536-208-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1596-157-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1596-153-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/1596-152-0x0000000000400000-0x0000000000481000-memory.dmp

                  Filesize

                  516KB

                • memory/3212-142-0x0000000003C00000-0x0000000003C01000-memory.dmp

                  Filesize

                  4KB

                • memory/3212-154-0x0000000004750000-0x0000000004751000-memory.dmp

                  Filesize

                  4KB

                • memory/3212-150-0x00000000046C0000-0x00000000046C1000-memory.dmp

                  Filesize

                  4KB