Analysis

  • max time kernel
    139s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26-09-2022 14:38

General

  • Target

    Shipping Documents.exe

  • Size

    7KB

  • MD5

    493741e032e10f1c43bcde8b96cde576

  • SHA1

    f834508c65480cc1a72175e0cfc90270141aff1d

  • SHA256

    37c8c1de3080b2fca7668b09f29f9505f35e379e589d9614ae9da078f9420202

  • SHA512

    2caaee7d8dca43f81bcbf4fc9d2b94e472c94bc53f0709cfaebaccb179a5ffafc38048bb5e1861a2bd864dbb59c5837720e6c593705c567c61c37bf19e3de099

  • SSDEEP

    96:3hwnFNH9lu1pvtLQe3d4RjmdY4CEaoJFVBov//BzNt:3a59l+RtLDyc7CEaojVqv//D

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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Shipping Documents.exe
    "C:\Users\Admin\AppData\Local\Temp\Shipping Documents.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1456
    • 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:1568
    • C:\Users\Admin\AppData\Local\Temp\Shipping Documents.exe
      "C:\Users\Admin\AppData\Local\Temp\Shipping Documents.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1800
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\xtcaxvuwhmsg.vbs"
        3⤵
          PID:2012

    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

    • C:\Users\Admin\AppData\Local\Temp\xtcaxvuwhmsg.vbs
      Filesize

      544B

      MD5

      78d6ffad019ca068006bb3c14e1a9cdc

      SHA1

      25eb9216a58a8336bb8427de1d48235ec4244112

      SHA256

      bd4939255ef20b9a0b2464e384649de2a05dd5cb2ac0af2b659c8bd22f1cf584

      SHA512

      f1a6ad1445c824797955eed9b26099b7349cc5393bc3b44acdeb5519aee139992f39545cb60cffbf83c45a31d2581897d67efe75a5a1bb7d8c9f6acab9005872

    • memory/1456-54-0x0000000000DE0000-0x0000000000DE8000-memory.dmp
      Filesize

      32KB

    • memory/1456-55-0x00000000768A1000-0x00000000768A3000-memory.dmp
      Filesize

      8KB

    • memory/1456-56-0x0000000005960000-0x0000000005A40000-memory.dmp
      Filesize

      896KB

    • memory/1456-57-0x0000000005700000-0x0000000005792000-memory.dmp
      Filesize

      584KB

    • memory/1568-58-0x0000000000000000-mapping.dmp
    • memory/1568-60-0x000000006F7B0000-0x000000006FD5B000-memory.dmp
      Filesize

      5.7MB

    • memory/1568-61-0x000000006F7B0000-0x000000006FD5B000-memory.dmp
      Filesize

      5.7MB

    • memory/1568-62-0x000000006F7B0000-0x000000006FD5B000-memory.dmp
      Filesize

      5.7MB

    • memory/1800-69-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1800-75-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1800-68-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1800-64-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1800-71-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1800-70-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1800-73-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1800-66-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1800-76-0x00000000004327A4-mapping.dmp
    • memory/1800-79-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1800-80-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1800-81-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1800-63-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/1800-83-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/2012-82-0x0000000000000000-mapping.dmp