Analysis

  • max time kernel
    151s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-09-2022 07:57

General

  • Target

    image001.exe

  • Size

    139KB

  • MD5

    3ff883485df0487ddc2d0f65db260680

  • SHA1

    4dfeb7c1e8077631751028fb4b13ba2e79bcd1aa

  • SHA256

    9c0aa31bc4f16dca5d64c7eea86b41ea406a7f234e59fd13fa5c15128432e217

  • SHA512

    92124151e9b2684419c47c54dc3e716456a5aa6a66c1a8522a020f71e1dcb999675bffa9526dfe9f667b699e2a2c97954045c377940ad7f0cbd1c09701aa5a13

  • SSDEEP

    3072:Lls89Bs5bEg6AAAITTE4R2GZzuj7Fnkob8x4zJL6:moBs5bEg6/T44R2GZzuj7Fkob8x

Malware Config

Extracted

Family

remcos

Botnet

StarMoneyNew

C2

185.252.178.35:41900

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-6RGOTF

  • 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.

  • 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\image001.exe
    "C:\Users\Admin\AppData\Local\Temp\image001.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:4752
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQA2AA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1180
    • C:\Users\Admin\AppData\Local\Temp\image001.exe
      C:\Users\Admin\AppData\Local\Temp\image001.exe
      2⤵
        PID:4628
      • C:\Users\Admin\AppData\Local\Temp\image001.exe
        C:\Users\Admin\AppData\Local\Temp\image001.exe
        2⤵
          PID:548
        • C:\Users\Admin\AppData\Local\Temp\image001.exe
          C:\Users\Admin\AppData\Local\Temp\image001.exe
          2⤵
            PID:1080

        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

        • memory/548-145-0x0000000000000000-mapping.dmp
        • memory/1080-151-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1080-150-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1080-149-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1080-148-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1080-147-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1080-146-0x0000000000000000-mapping.dmp
        • memory/1180-137-0x0000000005520000-0x0000000005586000-memory.dmp
          Filesize

          408KB

        • memory/1180-140-0x0000000007AA0000-0x000000000811A000-memory.dmp
          Filesize

          6.5MB

        • memory/1180-141-0x0000000006930000-0x000000000694A000-memory.dmp
          Filesize

          104KB

        • memory/1180-139-0x0000000006440000-0x000000000645E000-memory.dmp
          Filesize

          120KB

        • memory/1180-138-0x0000000005E50000-0x0000000005EB6000-memory.dmp
          Filesize

          408KB

        • memory/1180-136-0x0000000005820000-0x0000000005E48000-memory.dmp
          Filesize

          6.2MB

        • memory/1180-135-0x0000000002E50000-0x0000000002E86000-memory.dmp
          Filesize

          216KB

        • memory/1180-134-0x0000000000000000-mapping.dmp
        • memory/4628-144-0x0000000000000000-mapping.dmp
        • memory/4752-142-0x000000000CEF0000-0x000000000CF82000-memory.dmp
          Filesize

          584KB

        • memory/4752-143-0x000000000F800000-0x000000000FDA4000-memory.dmp
          Filesize

          5.6MB

        • memory/4752-132-0x0000000000030000-0x0000000000058000-memory.dmp
          Filesize

          160KB

        • memory/4752-133-0x0000000009450000-0x0000000009472000-memory.dmp
          Filesize

          136KB