Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27-01-2023 12:53

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

  • Detect PureCrypter injector 1 IoCs
  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Remcos

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
    "C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1264
    • 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:592
    • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
      C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
      2⤵
        PID:1288
      • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
        C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
        2⤵
          PID:1348
        • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
          C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
          2⤵
            PID:1304
          • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
            C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
            2⤵
              PID:1160
            • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
              C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
              2⤵
                PID:1276
              • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
                C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
                2⤵
                  PID:1660
                • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
                  C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
                  2⤵
                    PID:1668

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • memory/592-57-0x0000000000000000-mapping.dmp

                • memory/592-59-0x000000006ECC0000-0x000000006F26B000-memory.dmp

                  Filesize

                  5.7MB

                • memory/592-60-0x000000006ECC0000-0x000000006F26B000-memory.dmp

                  Filesize

                  5.7MB

                • memory/592-61-0x000000006ECC0000-0x000000006F26B000-memory.dmp

                  Filesize

                  5.7MB

                • memory/1264-54-0x00000000002F0000-0x00000000002F8000-memory.dmp

                  Filesize

                  32KB

                • memory/1264-55-0x0000000075C61000-0x0000000075C63000-memory.dmp

                  Filesize

                  8KB

                • memory/1264-56-0x0000000006080000-0x000000000631C000-memory.dmp

                  Filesize

                  2.6MB

                • memory/1264-62-0x00000000055E0000-0x0000000005660000-memory.dmp

                  Filesize

                  512KB

                • memory/1668-66-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/1668-64-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/1668-63-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/1668-68-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/1668-69-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/1668-71-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/1668-70-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/1668-73-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/1668-76-0x0000000000432C26-mapping.dmp

                • memory/1668-75-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/1668-79-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/1668-80-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/1668-81-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB