Analysis

  • max time kernel
    148s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-09-2022 04:48

General

  • Target

    Revised PO-2022092903_______________________.exe

  • Size

    18KB

  • MD5

    780dbc77368a2bdd88408142681fe92e

  • SHA1

    605fbd0b6ef877761637b47633035726880651cb

  • SHA256

    f12d6c2f88961769b11a7f37c14e189934f8b8b882d17fef0e61c41851447edb

  • SHA512

    ec32a03f7c7b62f4cb2c82eff0fdf25c729c221973fafa33529dcb72aa58e0d7cca8dd16346588dfd8ca9bc7c7b46a72e7e6ee4a5a365c8f396afc4ab6c97801

  • SSDEEP

    384:P1sOYis2yciPtUu4rhLEzvzLhkg5rkOo/EVm:aO0BciPtQVY/TrkOocVm

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.

  • 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.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Revised PO-2022092903_______________________.exe
    "C:\Users\Admin\AppData\Local\Temp\Revised PO-2022092903_______________________.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1960
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1232
    • C:\Users\Admin\AppData\Local\Temp\Revised PO-2022092903_______________________.exe
      "C:\Users\Admin\AppData\Local\Temp\Revised PO-2022092903_______________________.exe"
      2⤵
        PID:1536

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    2
    T1112

    Install Root Certificate

    1
    T1130

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1232-58-0x0000000000000000-mapping.dmp
    • memory/1232-62-0x000000006ED30000-0x000000006F2DB000-memory.dmp
      Filesize

      5.7MB

    • memory/1232-61-0x000000006ED30000-0x000000006F2DB000-memory.dmp
      Filesize

      5.7MB

    • memory/1232-60-0x000000006ED30000-0x000000006F2DB000-memory.dmp
      Filesize

      5.7MB

    • memory/1536-68-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1536-69-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1536-81-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1536-80-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1536-63-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1536-64-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1536-79-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1536-71-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1536-73-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1536-76-0x00000000004327A4-mapping.dmp
    • memory/1536-70-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1536-66-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1536-75-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1960-57-0x0000000005250000-0x00000000052E2000-memory.dmp
      Filesize

      584KB

    • memory/1960-54-0x0000000001380000-0x000000000138A000-memory.dmp
      Filesize

      40KB

    • memory/1960-55-0x0000000074AB1000-0x0000000074AB3000-memory.dmp
      Filesize

      8KB

    • memory/1960-56-0x0000000009200000-0x00000000092E0000-memory.dmp
      Filesize

      896KB