Analysis

  • max time kernel
    149s
  • max time network
    126s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    10-05-2024 14:11

General

  • Target

    49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe

  • Size

    469KB

  • MD5

    95939f7e0943f1428467c77c293e6036

  • SHA1

    892d0c06a2c9377b716e3e456c15fa0a5c2d070a

  • SHA256

    49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2

  • SHA512

    ad55cf00384915a788343eff3b54811050e3964f4c6598515465dce462bce71116fe52d03057ecf202fa08ef405df70c1bf07dfe65ccf37f3e58f16bf6e64f56

  • SSDEEP

    12288:umnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSa3n9:WiLJbpI7I2WhQqZ7m9

Malware Config

Extracted

Family

remcos

Botnet

EdgeUpdater

C2

rornfl12.duckdns.org:2405

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    Edgeupdater.exe

  • copy_folder

    microsoftEdge

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-NZEE04

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Edgeupdater

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe
    "C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe"
    1⤵
    • Adds policy Run key to start application
    • Adds Run key to start application
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2368
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3360
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\microsoftEdge\Edgeupdater.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3888
        • C:\ProgramData\microsoftEdge\Edgeupdater.exe
          C:\ProgramData\microsoftEdge\Edgeupdater.exe
          4⤵
          • Adds policy Run key to start application
          • Executes dropped EXE
          • Adds Run key to start application
          PID:1836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\microsoftEdge\Edgeupdater.exe

    Filesize

    469KB

    MD5

    95939f7e0943f1428467c77c293e6036

    SHA1

    892d0c06a2c9377b716e3e456c15fa0a5c2d070a

    SHA256

    49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2

    SHA512

    ad55cf00384915a788343eff3b54811050e3964f4c6598515465dce462bce71116fe52d03057ecf202fa08ef405df70c1bf07dfe65ccf37f3e58f16bf6e64f56

  • C:\Users\Admin\AppData\Local\Temp\install.vbs

    Filesize

    410B

    MD5

    19f4614bb43cdf3e42d786d19a92f4ac

    SHA1

    bd3fa3595e247387810e31b3d3fd4a08b54dacc7

    SHA256

    1e9cb576fd6e7af381e5e24429a8a514d36aff8ed0f6f579c609cc646cbddcea

    SHA512

    aa9611fa7d87c2237abeb9d23dd03da4250ba4192bdc276f4c6f3c8747ee8cb6768b160e843012d8c550e8c1744cbfb4746b1d928c66495aa08740f55092bcf4