Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-01-2023 07:07

General

  • Target

    e3a64adc43c5c5c0bfc725344407433b4b497fa9.exe

  • Size

    1.1MB

  • MD5

    d9b3775511c7538a73dfeaab0073b4b6

  • SHA1

    e3a64adc43c5c5c0bfc725344407433b4b497fa9

  • SHA256

    98479f2d5e3f5147ddd504bcc7bd1a2b0a3b06ff5525f313a55ce81efc67fc28

  • SHA512

    6b685246032b7c4a09f4df63dbc1282dfdd9822911744d9b9bcb4b135139a7a25b7d0daf30fd0b62b254ede16d010dbd18e8a8adef384bcfa11400a4605e6969

  • SSDEEP

    24576:QOwgbq09TF+lmP8iZ1P/wvDcm9puPYxsJ4gb:HrdDAvFYQsqgb

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

51.75.209.245:2404

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-CMFPLR

  • 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 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e3a64adc43c5c5c0bfc725344407433b4b497fa9.exe
    "C:\Users\Admin\AppData\Local\Temp\e3a64adc43c5c5c0bfc725344407433b4b497fa9.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1260
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\e3a64adc43c5c5c0bfc725344407433b4b497fa9.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1708
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\oCfQiTZ.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4588
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oCfQiTZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4100.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1740
    • C:\Users\Admin\AppData\Local\Temp\e3a64adc43c5c5c0bfc725344407433b4b497fa9.exe
      "C:\Users\Admin\AppData\Local\Temp\e3a64adc43c5c5c0bfc725344407433b4b497fa9.exe"
      2⤵
        PID:4120
      • C:\Users\Admin\AppData\Local\Temp\e3a64adc43c5c5c0bfc725344407433b4b497fa9.exe
        "C:\Users\Admin\AppData\Local\Temp\e3a64adc43c5c5c0bfc725344407433b4b497fa9.exe"
        2⤵
        • Suspicious use of SetWindowsHookEx
        PID:2800

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      18KB

      MD5

      38a80d656d68754ca90f8b825aec041e

      SHA1

      29dcbcf7cd83dc1b80b5b1841ab979513be8beb6

      SHA256

      3e5d0e93741eb4ecc4b3e9500254c6c0fd1852572b4f4a3ce6d2e2ac7966212e

      SHA512

      50af88cb88cca7be8a945313df9d02e3a4a71f6e8ff1545ccd67e83191721de05481b2226fee29ffd93c496fda0b05f3d5010ba81b613a34ada96ac5bd09c329

    • C:\Users\Admin\AppData\Local\Temp\tmp4100.tmp

      Filesize

      1KB

      MD5

      66f142784fbc0a599f742e2f8d1799d8

      SHA1

      22524255c06d5a2e397ddd3f3596fbc342219967

      SHA256

      a90fb803bdea2c0f6fe7af770e19497e2638e59904def789040799522234a833

      SHA512

      e9a50fb18fc94cfbcdcf1d176dac680921d637835eb4305015a2b403d331922baa0623575ee9ab9ad3b5f16fe5072219653127b8065aef3dee58d674db44f083

    • memory/1260-132-0x0000000000DA0000-0x0000000000EC8000-memory.dmp

      Filesize

      1.2MB

    • memory/1260-134-0x0000000005850000-0x00000000058E2000-memory.dmp

      Filesize

      584KB

    • memory/1260-133-0x0000000005EE0000-0x0000000006484000-memory.dmp

      Filesize

      5.6MB

    • memory/1260-135-0x0000000005900000-0x000000000590A000-memory.dmp

      Filesize

      40KB

    • memory/1260-136-0x0000000009710000-0x00000000097AC000-memory.dmp

      Filesize

      624KB

    • memory/1708-139-0x0000000002810000-0x0000000002846000-memory.dmp

      Filesize

      216KB

    • memory/1708-153-0x0000000006700000-0x0000000006732000-memory.dmp

      Filesize

      200KB

    • memory/1708-137-0x0000000000000000-mapping.dmp

    • memory/1708-143-0x00000000052A0000-0x00000000052C2000-memory.dmp

      Filesize

      136KB

    • memory/1708-162-0x0000000007790000-0x00000000077AA000-memory.dmp

      Filesize

      104KB

    • memory/1708-146-0x0000000005B30000-0x0000000005B96000-memory.dmp

      Filesize

      408KB

    • memory/1708-159-0x00000000074C0000-0x00000000074CA000-memory.dmp

      Filesize

      40KB

    • memory/1708-157-0x0000000007A90000-0x000000000810A000-memory.dmp

      Filesize

      6.5MB

    • memory/1708-145-0x0000000005340000-0x00000000053A6000-memory.dmp

      Filesize

      408KB

    • memory/1708-155-0x0000000072F80000-0x0000000072FCC000-memory.dmp

      Filesize

      304KB

    • memory/1740-140-0x0000000000000000-mapping.dmp

    • memory/2800-147-0x0000000000000000-mapping.dmp

    • memory/2800-148-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2800-150-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2800-166-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2800-149-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2800-152-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4120-144-0x0000000000000000-mapping.dmp

    • memory/4588-151-0x0000000006330000-0x000000000634E000-memory.dmp

      Filesize

      120KB

    • memory/4588-156-0x00000000069F0000-0x0000000006A0E000-memory.dmp

      Filesize

      120KB

    • memory/4588-160-0x00000000079C0000-0x0000000007A56000-memory.dmp

      Filesize

      600KB

    • memory/4588-161-0x0000000007970000-0x000000000797E000-memory.dmp

      Filesize

      56KB

    • memory/4588-158-0x0000000007740000-0x000000000775A000-memory.dmp

      Filesize

      104KB

    • memory/4588-163-0x0000000007A60000-0x0000000007A68000-memory.dmp

      Filesize

      32KB

    • memory/4588-141-0x0000000005800000-0x0000000005E28000-memory.dmp

      Filesize

      6.2MB

    • memory/4588-138-0x0000000000000000-mapping.dmp

    • memory/4588-154-0x0000000072F80000-0x0000000072FCC000-memory.dmp

      Filesize

      304KB