Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-1703_x64
  • resource
    win10-20231129-en
  • resource tags

    arch:x64arch:x86image:win10-20231129-enlocale:en-usos:windows10-1703-x64system
  • submitted
    05/12/2023, 21:14

General

  • Target

    $R4S8Q5B.exe

  • Size

    911KB

  • MD5

    5313272fd87d44ac3b60e976db857d49

  • SHA1

    dbc5bdfa1b78d34fb4b3d3b9074ba449c7f29074

  • SHA256

    9103e2815438759a349705607f3be586c2129551e74cd2a875a04faab7ac43a9

  • SHA512

    271cfe471b50f340d36cb8b23be621883939a9ca85b1eb814bda8d65120eceaea139e159b32d2acf009e58e5df9aa709cebf0ffe0f638c14a577261c12ed3145

  • SSDEEP

    24576:ZzDp2LTL98NShdlTJzZWHyKmgev5/uWO/X4f:Fp2LSNEzTJgrmnUWku

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

167.114.189.33:2404

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-7ZDF66

  • 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.

  • 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 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe
    "C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4388
    • 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\$R4S8Q5B.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5036
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\bIURQhWY.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3228
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bIURQhWY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8E9F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2580
    • C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe
      "C:\Users\Admin\AppData\Local\Temp\$R4S8Q5B.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:1260

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          f8dcb938a9d36fbaec9be8426584c362

          SHA1

          a24c86d0913c708d6ae1959b23032ba0acd85e5c

          SHA256

          08ff3d02a743cf2dd1f48f72514bb3bda2c2eeb5bb4d09f4ebf3de524f427010

          SHA512

          486743c127a1e9c2946cf1816534b99c24c9a2c67aa4851f88a19a49ecdc1498a1022ffaf915811193b117840e9c200c1c085c36def543101aa44dfe8b68728c

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          18KB

          MD5

          7ca36e26421ffe6138095383a6aadcb7

          SHA1

          e2478d076ee52c0d59da9b89b178e44d3e798798

          SHA256

          b96979181fb7d40f38dd68c72d122927ace2107a68ce45623263e2c805ee821c

          SHA512

          c44e4e556a8c599939e2832a0200b137a490ee16bc37d78f7612f6248656a95b356b04aa731f1ac001ecfe3bad5433278e1cbe65ce391e773c63a1ddcbb2a184

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nr4urkwc.mdg.ps1

          Filesize

          1B

          MD5

          c4ca4238a0b923820dcc509a6f75849b

          SHA1

          356a192b7913b04c54574d18c28d46e6395428ab

          SHA256

          6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

          SHA512

          4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

        • C:\Users\Admin\AppData\Local\Temp\tmp8E9F.tmp

          Filesize

          1KB

          MD5

          be0395e794c3c727954bbd74e5f92b8c

          SHA1

          930f18d2c5d78ad4a5d47a0f38b6a45b5c4034d6

          SHA256

          d6e03acaf2a82e97c73ec7c77d8b89284e3255f4b5468bd12dab0772ac011b6a

          SHA512

          a46fffc2a27be0e16f13f9bb2a0047ca3acb6ba9d0dae52e851d7939a82c1b9cfb2d42ac74a597fe46e877fef342c9ae11585d7fccafad2cee7d155f6fafa9f6

        • memory/1260-522-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-537-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-529-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-535-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-525-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-523-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-31-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-530-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-542-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-40-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-39-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-38-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-36-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-543-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-32-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/1260-30-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3228-479-0x0000000006D70000-0x0000000006D8A000-memory.dmp

          Filesize

          104KB

        • memory/3228-79-0x00000000090A0000-0x00000000090BE000-memory.dmp

          Filesize

          120KB

        • memory/3228-27-0x0000000007830000-0x0000000007896000-memory.dmp

          Filesize

          408KB

        • memory/3228-93-0x00000000095E0000-0x0000000009674000-memory.dmp

          Filesize

          592KB

        • memory/3228-91-0x0000000006B50000-0x0000000006B60000-memory.dmp

          Filesize

          64KB

        • memory/3228-24-0x0000000007190000-0x00000000077B8000-memory.dmp

          Filesize

          6.2MB

        • memory/3228-29-0x0000000007B20000-0x0000000007E70000-memory.dmp

          Filesize

          3.3MB

        • memory/3228-22-0x0000000006A40000-0x0000000006A76000-memory.dmp

          Filesize

          216KB

        • memory/3228-23-0x0000000073440000-0x0000000073B2E000-memory.dmp

          Filesize

          6.9MB

        • memory/3228-90-0x0000000009280000-0x0000000009325000-memory.dmp

          Filesize

          660KB

        • memory/3228-76-0x00000000090C0000-0x00000000090F3000-memory.dmp

          Filesize

          204KB

        • memory/3228-78-0x0000000073BC0000-0x0000000073C0B000-memory.dmp

          Filesize

          300KB

        • memory/3228-43-0x00000000081E0000-0x0000000008256000-memory.dmp

          Filesize

          472KB

        • memory/3228-519-0x0000000073440000-0x0000000073B2E000-memory.dmp

          Filesize

          6.9MB

        • memory/3228-77-0x000000007F7B0000-0x000000007F7C0000-memory.dmp

          Filesize

          64KB

        • memory/4388-35-0x0000000073440000-0x0000000073B2E000-memory.dmp

          Filesize

          6.9MB

        • memory/4388-9-0x0000000004E90000-0x0000000004E9A000-memory.dmp

          Filesize

          40KB

        • memory/4388-3-0x0000000004C30000-0x0000000004CC2000-memory.dmp

          Filesize

          584KB

        • memory/4388-5-0x0000000004C00000-0x0000000004C0A000-memory.dmp

          Filesize

          40KB

        • memory/4388-6-0x00000000050E0000-0x00000000050FA000-memory.dmp

          Filesize

          104KB

        • memory/4388-2-0x0000000005130000-0x000000000562E000-memory.dmp

          Filesize

          5.0MB

        • memory/4388-7-0x0000000073440000-0x0000000073B2E000-memory.dmp

          Filesize

          6.9MB

        • memory/4388-12-0x000000000BF10000-0x000000000BFAC000-memory.dmp

          Filesize

          624KB

        • memory/4388-4-0x0000000004EC0000-0x0000000004ED0000-memory.dmp

          Filesize

          64KB

        • memory/4388-1-0x0000000073440000-0x0000000073B2E000-memory.dmp

          Filesize

          6.9MB

        • memory/4388-8-0x0000000004EC0000-0x0000000004ED0000-memory.dmp

          Filesize

          64KB

        • memory/4388-11-0x0000000009630000-0x00000000096E8000-memory.dmp

          Filesize

          736KB

        • memory/4388-0-0x00000000002D0000-0x00000000003BA000-memory.dmp

          Filesize

          936KB

        • memory/4388-10-0x0000000004EB0000-0x0000000004EBC000-memory.dmp

          Filesize

          48KB

        • memory/5036-81-0x0000000073BC0000-0x0000000073C0B000-memory.dmp

          Filesize

          300KB

        • memory/5036-520-0x0000000073440000-0x0000000073B2E000-memory.dmp

          Filesize

          6.9MB

        • memory/5036-518-0x0000000073440000-0x0000000073B2E000-memory.dmp

          Filesize

          6.9MB

        • memory/5036-488-0x0000000007370000-0x0000000007378000-memory.dmp

          Filesize

          32KB

        • memory/5036-92-0x0000000004D70000-0x0000000004D80000-memory.dmp

          Filesize

          64KB

        • memory/5036-28-0x0000000007DF0000-0x0000000007E56000-memory.dmp

          Filesize

          408KB

        • memory/5036-80-0x000000007F160000-0x000000007F170000-memory.dmp

          Filesize

          64KB

        • memory/5036-42-0x0000000008890000-0x00000000088DB000-memory.dmp

          Filesize

          300KB

        • memory/5036-41-0x0000000007FC0000-0x0000000007FDC000-memory.dmp

          Filesize

          112KB

        • memory/5036-21-0x0000000073440000-0x0000000073B2E000-memory.dmp

          Filesize

          6.9MB

        • memory/5036-26-0x0000000007D50000-0x0000000007D72000-memory.dmp

          Filesize

          136KB