Analysis

  • max time kernel
    132s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-01-2023 07:15

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.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 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 behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5108
    • 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:4368
    • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
      C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
      2⤵
        PID:1500
      • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
        C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
        2⤵
        • Checks computer location settings
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:1580
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\vjnorqwirwvucsdq.vbs"
          3⤵
            PID:1412

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Defense Evasion

      Modify Registry

      1
      T1112

      Discovery

      Query Registry

      1
      T1012

      System Information Discovery

      2
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\vjnorqwirwvucsdq.vbs
        Filesize

        632B

        MD5

        2a1ea020599f14208dc31d83daaf0810

        SHA1

        496ebadfda0d489b31dfcd278bfac8409d5dc0e0

        SHA256

        aaa5f90bdf2b7143c035481d4e27b79b3015ed91c9e9a557f7d49acebf174228

        SHA512

        730be93a0494db7e1dae1a8901b1e16daa89ec140f129fd45d240763f7e8ed6530bafee5983bdbb46bc4bc8db7dc4811e5a6861d12dc9127afaf691ad5f53883

      • memory/1412-150-0x0000000000000000-mapping.dmp
      • memory/1500-144-0x0000000000000000-mapping.dmp
      • memory/1580-151-0x0000000000400000-0x000000000047F000-memory.dmp
        Filesize

        508KB

      • memory/1580-149-0x0000000000400000-0x000000000047F000-memory.dmp
        Filesize

        508KB

      • memory/1580-148-0x0000000000400000-0x000000000047F000-memory.dmp
        Filesize

        508KB

      • memory/1580-147-0x0000000000400000-0x000000000047F000-memory.dmp
        Filesize

        508KB

      • memory/1580-146-0x0000000000400000-0x000000000047F000-memory.dmp
        Filesize

        508KB

      • memory/1580-145-0x0000000000000000-mapping.dmp
      • memory/4368-137-0x0000000005B30000-0x0000000005B96000-memory.dmp
        Filesize

        408KB

      • memory/4368-141-0x0000000006DD0000-0x0000000006DEA000-memory.dmp
        Filesize

        104KB

      • memory/4368-140-0x00000000082D0000-0x000000000894A000-memory.dmp
        Filesize

        6.5MB

      • memory/4368-139-0x00000000068E0000-0x00000000068FE000-memory.dmp
        Filesize

        120KB

      • memory/4368-138-0x00000000062B0000-0x0000000006316000-memory.dmp
        Filesize

        408KB

      • memory/4368-136-0x0000000005BF0000-0x0000000006218000-memory.dmp
        Filesize

        6.2MB

      • memory/4368-135-0x0000000002FA0000-0x0000000002FD6000-memory.dmp
        Filesize

        216KB

      • memory/4368-134-0x0000000000000000-mapping.dmp
      • memory/5108-142-0x00000000064D0000-0x0000000006562000-memory.dmp
        Filesize

        584KB

      • memory/5108-143-0x0000000007AE0000-0x0000000008084000-memory.dmp
        Filesize

        5.6MB

      • memory/5108-132-0x0000000000B30000-0x0000000000B38000-memory.dmp
        Filesize

        32KB

      • memory/5108-133-0x0000000006D70000-0x0000000006D92000-memory.dmp
        Filesize

        136KB