Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250207-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-02-2025 06:13

General

  • Target

    fd590a606d1d440d77d341a682c0e1e7.exe

  • Size

    1.0MB

  • MD5

    fd590a606d1d440d77d341a682c0e1e7

  • SHA1

    3f9fedc607ba64b88b607d99ed4071b9d04f9589

  • SHA256

    d2a87b1b1a1106b874e949e49a55e7e68202eaa84062c270bbf62481bb769a45

  • SHA512

    b5ae2854414d2baffb33bee8c723eff60f67ead3dcc13705390c6bbd61482599cbc9cb9165a29ac4c7290a57e0c4af8f2b65a7e5e9cb0f553bf14ce5741deb3f

  • SSDEEP

    24576:4zqwz4J8WFCIvIwxoKCWS2zzIy4zhnmCeNv7KCuCqsRG/:4z7zMLFCIKWS6zIXhnOOCTqsk

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

198.12.81.146:7643

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-5YTKJV

  • 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.

  • Remcos family
  • Downloads MZ/PE file 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fd590a606d1d440d77d341a682c0e1e7.exe
    "C:\Users\Admin\AppData\Local\Temp\fd590a606d1d440d77d341a682c0e1e7.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5024
    • C:\Users\Admin\AppData\Local\Temp\fd590a606d1d440d77d341a682c0e1e7.exe
      "C:\Users\Admin\AppData\Local\Temp\fd590a606d1d440d77d341a682c0e1e7.exe"
      2⤵
        PID:4376
      • C:\Users\Admin\AppData\Local\Temp\fd590a606d1d440d77d341a682c0e1e7.exe
        "C:\Users\Admin\AppData\Local\Temp\fd590a606d1d440d77d341a682c0e1e7.exe"
        2⤵
        • Suspicious use of SetWindowsHookEx
        PID:1228
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIyIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY4ODkiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTM2NTgwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MzAyNDY2NjUzIi8-PC9hcHA-PC9yZXF1ZXN0Pg
      1⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      PID:2064

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      144B

      MD5

      982e8ea0cddd4f82d7ff9a6fa2d68648

      SHA1

      ba4d8d4adb3fcd825235f0212190709215599722

      SHA256

      b240da486ccfbdaf47ca04e7ae5549375eab9093c16feba3a54f4a508d59d61c

      SHA512

      2bf17ccf503ba086d3407982c3bab47930d4df23b5248e8536a3d757d5ab394d7c06942b64a4ef61879a23a188495933e05c121345699b1e25c7fda0e4284dda

    • memory/1228-24-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1228-15-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1228-12-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1228-11-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1228-50-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1228-37-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1228-36-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1228-18-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1228-20-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1228-14-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1228-51-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/5024-3-0x00000000051B0000-0x0000000005242000-memory.dmp

      Filesize

      584KB

    • memory/5024-10-0x000000000C210000-0x000000000C2AC000-memory.dmp

      Filesize

      624KB

    • memory/5024-9-0x000000000A150000-0x000000000A212000-memory.dmp

      Filesize

      776KB

    • memory/5024-8-0x00000000738B0000-0x0000000074060000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-21-0x00000000738B0000-0x0000000074060000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-2-0x0000000005760000-0x0000000005D04000-memory.dmp

      Filesize

      5.6MB

    • memory/5024-0-0x00000000738BE000-0x00000000738BF000-memory.dmp

      Filesize

      4KB

    • memory/5024-1-0x0000000000650000-0x000000000075C000-memory.dmp

      Filesize

      1.0MB

    • memory/5024-7-0x00000000738BE000-0x00000000738BF000-memory.dmp

      Filesize

      4KB

    • memory/5024-6-0x0000000005740000-0x000000000575E000-memory.dmp

      Filesize

      120KB

    • memory/5024-5-0x00000000738B0000-0x0000000074060000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-4-0x0000000005150000-0x000000000515A000-memory.dmp

      Filesize

      40KB