Analysis

  • max time kernel
    147s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    16-05-2024 17:14

General

  • Target

    EBUaVgIGyhAIdkk.exe

  • Size

    985KB

  • MD5

    f5b954f0119303d3d0ef657666b75cb3

  • SHA1

    dbf749bf18d503c440a681863b6c84a80083de62

  • SHA256

    40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740

  • SHA512

    d7c140fb74a87670109ed116be731d9820978d322c69b85fb11c75455049fb975e9955ba2b5d549fbf1c077e3352fb7fb16190b3b1d3bc76de26f1727ededef3

  • SSDEEP

    24576:TSYMFniyyZ6Pqc2Duhz/s8dTGMjqLpHr:pMFnyZ82DuhzfCHdHr

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

alibabaforwader10.ddns.net:60247

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-AC7NKA

  • 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.

  • 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\EBUaVgIGyhAIdkk.exe
    "C:\Users\Admin\AppData\Local\Temp\EBUaVgIGyhAIdkk.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1964
    • 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\EBUaVgIGyhAIdkk.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2632
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YbOWhnO.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2740
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YbOWhnO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6A28.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2676
    • C:\Users\Admin\AppData\Local\Temp\EBUaVgIGyhAIdkk.exe
      "C:\Users\Admin\AppData\Local\Temp\EBUaVgIGyhAIdkk.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:2404

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    26a60d6b494d61d8cdd66554ed8ec4ba

    SHA1

    8b682a9bf1e0679b2223a65cff5b802b7c247366

    SHA256

    3ab406a9d4304bcb80537e721ec331ff42e8a83a35fdf3b0e80ee949f0c772a6

    SHA512

    fb6b7a4f46235c6a97b0829a5d95376ebad3c52cc8940413b23bfb5e6729ae3218264435f3c1c365faf9e97d315a5e4a605798122e07092687d527443b5e3026

  • C:\Users\Admin\AppData\Local\Temp\tmp6A28.tmp

    Filesize

    1KB

    MD5

    3c9eeeedf7cc76c226981dcf24d266d8

    SHA1

    54ee1589be3b9928c99fbc255a4795c48a61c2e3

    SHA256

    640a913683e29e1c8205e758354dd6a98a3def8197612d898beab2118c22e9c7

    SHA512

    781c20eacde7dd78a221b561c0be4a98804c3b19e3b5c572e8d18cb21c52b0bb5aa5e76a716edbcc31a65e4cae7a57536380c260b13504432e433a42cc73b424

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\MJ5ODU76PAKX1SBUAP02.temp

    Filesize

    7KB

    MD5

    88a14fb6b9abcb27fd17f91338910620

    SHA1

    b3d099a60ad3e9bbd1a2151b5506cbfb979cd5db

    SHA256

    86c5ba813e6c7e83f302cb354760ea938ccfa22f86b31c9bd1e824ac9d99a669

    SHA512

    c11fab0917dae3317a93b9e23bf821255aceacab1fa15cf6f55dac94f2fb20b5222edbac16d82c7a6c38a037ecf38395e93189ae94d59363c3a8696f0a984aa8

  • memory/1964-42-0x00000000745FE000-0x00000000745FF000-memory.dmp

    Filesize

    4KB

  • memory/1964-1-0x0000000000E60000-0x0000000000F5C000-memory.dmp

    Filesize

    1008KB

  • memory/1964-2-0x00000000745F0000-0x0000000074CDE000-memory.dmp

    Filesize

    6.9MB

  • memory/1964-3-0x0000000000710000-0x0000000000730000-memory.dmp

    Filesize

    128KB

  • memory/1964-4-0x0000000000850000-0x0000000000860000-memory.dmp

    Filesize

    64KB

  • memory/1964-5-0x0000000000860000-0x0000000000876000-memory.dmp

    Filesize

    88KB

  • memory/1964-6-0x0000000005D70000-0x0000000005E30000-memory.dmp

    Filesize

    768KB

  • memory/1964-0-0x00000000745FE000-0x00000000745FF000-memory.dmp

    Filesize

    4KB

  • memory/1964-44-0x00000000745F0000-0x0000000074CDE000-memory.dmp

    Filesize

    6.9MB

  • memory/2404-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-33-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-41-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2404-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-50-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-55-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-56-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-62-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-63-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-69-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-74-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2404-76-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB