Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-08-2022 20:43

General

  • Target

    SecuriteInfo.com.Trojan.Win32.NetWire.4c.12905.exe

  • Size

    859KB

  • MD5

    6a2a21a4424aa8125566b927787f06f4

  • SHA1

    05e66fa255b59c8033ce40e1146b524e305f0f33

  • SHA256

    cd06021301a3677a02936aa5820f303d7aa650f63366266b75e553c669be08f5

  • SHA512

    fdcce8c8fd03e443d53f020cc142ca19f4083467db4dc9b51e9f5cfabf8ff3f398c026aad5efef6d845c328dd36e2b1aa7ef158f0aa7c90d32cc109a2e50a2de

Malware Config

Extracted

Family

remcos

Botnet

host

C2

nuvez110.camdvr.org:2404

nunez118.camdvr.org:2404

nunez115.accesscam.org:2404

leaflet308.casacam.net:2404

Darwin06.casacam.net:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • 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

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    teropedcfnjfd-742JDO

  • 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

  • take_screenshot_title

    wikipedia;solitaire;

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Remcos

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

  • Blocklisted process makes network request 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Win32.NetWire.4c.12905.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Win32.NetWire.4c.12905.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4352
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\Qjmfiikgwt.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4128
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /K C:\Users\Public\Libraries\QjmfiikgwO.bat
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3860
        • C:\Windows\SysWOW64\net.exe
          net session
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3108
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 session
            5⤵
              PID:2256
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -WindowStyle Hidden -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3292
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k
        2⤵
        • Blocklisted process makes network request
        PID:1784

    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\Public\Libraries\Cdex.bat
      Filesize

      155B

      MD5

      213c60adf1c9ef88dc3c9b2d579959d2

      SHA1

      e4d2ad7b22b1a8b5b1f7a702b303c7364b0ee021

      SHA256

      37c59c8398279916cfce45f8c5e3431058248f5e3bef4d9f5c0f44a7d564f82e

      SHA512

      fe897d9caa306b0e761b2fd61bb5dc32a53bfaad1ce767c6860af4e3ad59c8f3257228a6e1072dab0f990cb51c59c648084ba419ac6bc5c0a99bdffa569217b7

    • C:\Users\Public\Libraries\QjmfiikgwO.bat
      Filesize

      1KB

      MD5

      df48c09f243ebcc8a165f77a1c2bf889

      SHA1

      455f7db0adcc2a58d006f1630fb0bd55cd868c07

      SHA256

      4ef9821678da07138c19405387f3fb95e409fbd461c7b8d847c05075facd63ca

      SHA512

      735838c7cca953697ded48adfcd037b7f198072a8962f5940ce12e1bb1c7dd8c1f257a829276f5f5456f776f5bd13342222dd6e0dfc8f18a23f464f2c8d8f1cc

    • C:\Users\Public\Libraries\Qjmfiikgwt.bat
      Filesize

      58B

      MD5

      6f12c9410d71a9f1c715135a7626b023

      SHA1

      718bef18fe0694f392cc1a59cdd2f5edb5a53868

      SHA256

      5b95acffe3dd5dca5c68f1eeb56192126cd68efea07354dfb62771f9837bade4

      SHA512

      de13c193fde4e5562dae184431450de41a1d0ab8e6406992cd6f3b0609c94c89467448b36d87f771cfa3c002d3b4f88ab701156020752dbe6138f92c9ab5cb93

    • memory/1784-174-0x0000000000000000-mapping.dmp
    • memory/1784-217-0x0000000000400000-0x000000000047B000-memory.dmp
      Filesize

      492KB

    • memory/1784-216-0x0000000000400000-0x000000000047B000-memory.dmp
      Filesize

      492KB

    • memory/1784-215-0x0000000050590000-0x000000005060E000-memory.dmp
      Filesize

      504KB

    • memory/2256-149-0x0000000000000000-mapping.dmp
    • memory/3108-148-0x0000000000000000-mapping.dmp
    • memory/3292-158-0x0000000006A10000-0x0000000006A42000-memory.dmp
      Filesize

      200KB

    • memory/3292-166-0x0000000007A90000-0x0000000007AAA000-memory.dmp
      Filesize

      104KB

    • memory/3292-155-0x0000000005E30000-0x0000000005E96000-memory.dmp
      Filesize

      408KB

    • memory/3292-156-0x0000000005EA0000-0x0000000005F06000-memory.dmp
      Filesize

      408KB

    • memory/3292-157-0x0000000006480000-0x000000000649E000-memory.dmp
      Filesize

      120KB

    • memory/3292-151-0x0000000000000000-mapping.dmp
    • memory/3292-159-0x000000006F2C0000-0x000000006F30C000-memory.dmp
      Filesize

      304KB

    • memory/3292-160-0x00000000069F0000-0x0000000006A0E000-memory.dmp
      Filesize

      120KB

    • memory/3292-161-0x0000000007E20000-0x000000000849A000-memory.dmp
      Filesize

      6.5MB

    • memory/3292-162-0x00000000074A0000-0x00000000074BA000-memory.dmp
      Filesize

      104KB

    • memory/3292-163-0x00000000077E0000-0x00000000077EA000-memory.dmp
      Filesize

      40KB

    • memory/3292-164-0x00000000079D0000-0x0000000007A66000-memory.dmp
      Filesize

      600KB

    • memory/3292-165-0x00000000079A0000-0x00000000079AE000-memory.dmp
      Filesize

      56KB

    • memory/3292-154-0x0000000005600000-0x0000000005622000-memory.dmp
      Filesize

      136KB

    • memory/3292-167-0x0000000007A80000-0x0000000007A88000-memory.dmp
      Filesize

      32KB

    • memory/3292-153-0x0000000005790000-0x0000000005DB8000-memory.dmp
      Filesize

      6.2MB

    • memory/3292-152-0x00000000030A0000-0x00000000030D6000-memory.dmp
      Filesize

      216KB

    • memory/3860-146-0x0000000000000000-mapping.dmp
    • memory/4128-144-0x0000000000000000-mapping.dmp
    • memory/4352-176-0x0000000050590000-0x000000005060E000-memory.dmp
      Filesize

      504KB