Analysis

  • max time kernel
    131s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    11-05-2024 01:46

General

  • Target

    acbf12b2320144b2fa6410177816a70ffd423790b5c65cb6d6c6566e0ca1be18.exe

  • Size

    606KB

  • MD5

    26b9175fdea8189a3dfbbfadd992162a

  • SHA1

    7ed89ce0650ff7a790b70b94c7aea014d431e069

  • SHA256

    acbf12b2320144b2fa6410177816a70ffd423790b5c65cb6d6c6566e0ca1be18

  • SHA512

    7f5eef81b1a9d0dc45df0edd20dc298c7f348671f9716c94ed80fe045c7e5826955ef70e21df6012e89faf315c0357bbd0036ab90770d6d3f8df8d34704a7f47

  • SSDEEP

    12288:H+Dbg4B778QecVQuGWAsuzlK4J/cgr/nKkKeZZn++J6zpSZLTIvsQuWEAmD:2g4BXQ5LsuzlK9gTfK48+JYQLTx9W

Score
10/10

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

gg

C2

62.102.148.185:9771

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    newstart

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_wgwfvnfssp

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • detects Windows exceutables potentially bypassing UAC using eventvwr.exe 5 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\acbf12b2320144b2fa6410177816a70ffd423790b5c65cb6d6c6566e0ca1be18.exe
    "C:\Users\Admin\AppData\Local\Temp\acbf12b2320144b2fa6410177816a70ffd423790b5c65cb6d6c6566e0ca1be18.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2972
    • 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\acbf12b2320144b2fa6410177816a70ffd423790b5c65cb6d6c6566e0ca1be18.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2688
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mVRHqirOY.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2192
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mVRHqirOY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7C03.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2576
    • C:\Users\Admin\AppData\Local\Temp\acbf12b2320144b2fa6410177816a70ffd423790b5c65cb6d6c6566e0ca1be18.exe
      "C:\Users\Admin\AppData\Local\Temp\acbf12b2320144b2fa6410177816a70ffd423790b5c65cb6d6c6566e0ca1be18.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:2976

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp7C03.tmp

    Filesize

    1KB

    MD5

    88b8c31d3f59491c2343948a39180725

    SHA1

    b3911364f16216e7c0619807f718204319fa8681

    SHA256

    8885d7bfb11896c8b69fb43defa941e2fb5ff8f03c3bdbcc71dd150e82a1eab1

    SHA512

    56bcddc161948c146a5237b98466d7529f743be3eb3451fc1b3b8dfe9f8eefc4c352e945956c5e34f72d49a4cb7f06c0cdf366f77d6c85beaa3702114d1afd11

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

    Filesize

    7KB

    MD5

    bf8f627dc6e39a5b6e52ecf44faf8678

    SHA1

    2b865d8cb9389bce2eec603b2c1d40cbb0d8ba7c

    SHA256

    d13afd9a2cf0e4a3a52e3d27e4f0bcffe5564e1c52e0a3fd1684cdd5658d54b8

    SHA512

    2b703d2053af2d09921487dfa7eec6607ef6303e6261995989a1a9e4dd0a72ea4a095ad1950770a27590dae30dc75ed5a70f52fa60223abf3a582aff345959a6

  • memory/2972-5-0x0000000002050000-0x0000000002066000-memory.dmp

    Filesize

    88KB

  • memory/2972-37-0x00000000747A0000-0x0000000074E8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2972-4-0x0000000000870000-0x000000000087E000-memory.dmp

    Filesize

    56KB

  • memory/2972-0-0x00000000747AE000-0x00000000747AF000-memory.dmp

    Filesize

    4KB

  • memory/2972-6-0x00000000047D0000-0x0000000004830000-memory.dmp

    Filesize

    384KB

  • memory/2972-7-0x00000000747AE000-0x00000000747AF000-memory.dmp

    Filesize

    4KB

  • memory/2972-8-0x00000000747A0000-0x0000000074E8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2972-2-0x00000000747A0000-0x0000000074E8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2972-1-0x00000000008C0000-0x000000000095E000-memory.dmp

    Filesize

    632KB

  • memory/2972-3-0x0000000000840000-0x0000000000858000-memory.dmp

    Filesize

    96KB

  • memory/2976-27-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2976-34-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2976-33-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2976-23-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2976-25-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2976-32-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2976-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2976-29-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/2976-21-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB