Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    13/02/2024, 05:36

General

  • Target

    Specifications.scr

  • Size

    1020KB

  • MD5

    f03e14fede667def5971cd05001ac26e

  • SHA1

    c3b194d8b0d66a3a7aa540123f9191f06632c31a

  • SHA256

    a090d4d19e61d32cc67cbbcd57124becd412d1e9f7d8d8ed896da4d2d689dc7f

  • SHA512

    e38eaa3b4720cd0e0fd002f9d9067991c7b2ded1335a0a8d8872b96ec498a3231bdf99c1347e701b0bf23631e27a2569d62b0671a009562f9effb932c2ff3ff1

  • SSDEEP

    24576:MtS2xc3m8Y83BarJ3OJJwFcx9wyeZBMI4mCJFix:MQ2x+b3BaN3mwF6yJXWFi

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

lora1.taiwantradeglobal.com:2404

lora2.taiwantradeglobal.com: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-R9UMK0

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 47 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Specifications.scr
    "C:\Users\Admin\AppData\Local\Temp\Specifications.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1204
    • 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\Specifications.scr"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2640
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QfWagJoK.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2816
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QfWagJoK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCF6F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2696
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
        PID:2568

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpCF6F.tmp

      Filesize

      1KB

      MD5

      ec2953cb0be933a18e8ea8eb8ba22f28

      SHA1

      504094303526ce55b5ee15982154a52c28d29db1

      SHA256

      638b98ac00cd3a2d94d212e92c9c68b50d3cffe1cad8f656239695f33e73cbbf

      SHA512

      d9bce87d5978e9449e33d4666a1a61c44cb6db4caf5597c9fe614a9cd79c53e536dd29a3ff0c702bf8494f08b317bd870c859ec1f9ad0fdb21e42aa1eb7616a7

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

      Filesize

      7KB

      MD5

      fb2b5d0563922ca341dab000a3876b39

      SHA1

      49e5fcdb19dbedc36fe6c04b358a89b8ffc01af6

      SHA256

      02617f1e82b9d9a525f112ac26dab5fb8be677347af0254d0a2de9198be697a5

      SHA512

      abd1b756646db1eaf26da22a663124164b558b7032c959c7950dd8b75fe0ef5067e671092577a6649f252808ceed870fb41ab6eceebe94b4eca183276836a772

    • memory/1204-47-0x0000000074CA0000-0x000000007538E000-memory.dmp

      Filesize

      6.9MB

    • memory/1204-0-0x0000000001380000-0x0000000001482000-memory.dmp

      Filesize

      1.0MB

    • memory/1204-2-0x0000000001340000-0x0000000001380000-memory.dmp

      Filesize

      256KB

    • memory/1204-3-0x0000000000520000-0x0000000000534000-memory.dmp

      Filesize

      80KB

    • memory/1204-5-0x0000000000580000-0x000000000058E000-memory.dmp

      Filesize

      56KB

    • memory/1204-4-0x0000000000570000-0x000000000057A000-memory.dmp

      Filesize

      40KB

    • memory/1204-6-0x0000000005A60000-0x0000000005B20000-memory.dmp

      Filesize

      768KB

    • memory/1204-7-0x0000000074CA0000-0x000000007538E000-memory.dmp

      Filesize

      6.9MB

    • memory/1204-8-0x0000000001340000-0x0000000001380000-memory.dmp

      Filesize

      256KB

    • memory/1204-1-0x0000000074CA0000-0x000000007538E000-memory.dmp

      Filesize

      6.9MB

    • memory/2568-76-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-78-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-96-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-28-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-25-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-30-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-95-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-33-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-94-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-36-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-38-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-40-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-42-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

      Filesize

      4KB

    • memory/2568-44-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-93-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-92-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-22-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-48-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-49-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-50-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-51-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-52-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-53-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-91-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-90-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-56-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-57-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-58-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-59-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-60-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-61-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-62-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-63-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-64-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-65-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-67-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-68-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-69-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-71-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-72-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-73-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-75-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-89-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-77-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-87-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-80-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-81-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-82-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-84-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-85-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2568-86-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-21-0x000000006F7F0000-0x000000006FD9B000-memory.dmp

      Filesize

      5.7MB

    • memory/2640-55-0x000000006F7F0000-0x000000006FD9B000-memory.dmp

      Filesize

      5.7MB

    • memory/2640-45-0x0000000002410000-0x0000000002450000-memory.dmp

      Filesize

      256KB

    • memory/2640-31-0x000000006F7F0000-0x000000006FD9B000-memory.dmp

      Filesize

      5.7MB

    • memory/2640-26-0x0000000002410000-0x0000000002450000-memory.dmp

      Filesize

      256KB

    • memory/2816-24-0x000000006F7F0000-0x000000006FD9B000-memory.dmp

      Filesize

      5.7MB

    • memory/2816-54-0x000000006F7F0000-0x000000006FD9B000-memory.dmp

      Filesize

      5.7MB

    • memory/2816-43-0x0000000002700000-0x0000000002740000-memory.dmp

      Filesize

      256KB

    • memory/2816-34-0x0000000002700000-0x0000000002740000-memory.dmp

      Filesize

      256KB