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Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    06/12/2024, 07:05

General

  • Target

    0021635Purchase.exe

  • Size

    1.3MB

  • MD5

    131a67c95691f8fc41713102f3528846

  • SHA1

    dd8d92f7ecbf0cf280038fb94d00bcc43d17cf0a

  • SHA256

    caca9062bbedb4519f51493d026a344f885ac593b7224d40458ff07f8ecee4ba

  • SHA512

    1a685b5666e4d2e4d7fdae7b6230b32ed51f15e4d6a7da54f88c2962aba4d93cc93f1343058a07aaef5756356ca6b37f172a32d716e4862ad77b6a2ad80007f4

  • SSDEEP

    24576:Mu6J33O0c+JY5UZ+XC0kGso6Faq+T+qyO49vQAlBH51ZfCiRWY:Wu0c++OCvkGs9FaqkyOuvxH5gY

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.3.64.152:2559

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-ZFXG9Y

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Remcos family
  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0021635Purchase.exe
    "C:\Users\Admin\AppData\Local\Temp\0021635Purchase.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2708
    • C:\Users\Admin\AppData\Local\extrorsal\jailkeeper.exe
      "C:\Users\Admin\AppData\Local\Temp\0021635Purchase.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2756
      • C:\Windows\SysWOW64\svchost.exe
        "C:\Users\Admin\AppData\Local\Temp\0021635Purchase.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2720
        • C:\Windows\SysWOW64\svchost.exe
          C:\Windows\System32\svchost.exe
          4⤵
            PID:2804

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Users\Admin\AppData\Local\extrorsal\jailkeeper.exe

      Filesize

      1.3MB

      MD5

      131a67c95691f8fc41713102f3528846

      SHA1

      dd8d92f7ecbf0cf280038fb94d00bcc43d17cf0a

      SHA256

      caca9062bbedb4519f51493d026a344f885ac593b7224d40458ff07f8ecee4ba

      SHA512

      1a685b5666e4d2e4d7fdae7b6230b32ed51f15e4d6a7da54f88c2962aba4d93cc93f1343058a07aaef5756356ca6b37f172a32d716e4862ad77b6a2ad80007f4

    • memory/2708-6-0x0000000000800000-0x0000000000C00000-memory.dmp

      Filesize

      4.0MB

    • memory/2720-24-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2720-25-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2720-22-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2720-32-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2756-20-0x0000000000A90000-0x0000000000E90000-memory.dmp

      Filesize

      4.0MB

    • memory/2804-28-0x00000000000C0000-0x00000000000C8000-memory.dmp

      Filesize

      32KB

    • memory/2804-31-0x00000000000C0000-0x00000000000C8000-memory.dmp

      Filesize

      32KB

    • memory/2804-30-0x00000000000C0000-0x00000000000C8000-memory.dmp

      Filesize

      32KB

    • memory/2804-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB