Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    09-05-2024 10:59

General

  • Target

    3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe

  • Size

    1.0MB

  • MD5

    1b968f62b9672831c42e1cc776473a4b

  • SHA1

    14634650057f53408c9da09215bed0b08eb1f287

  • SHA256

    3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772

  • SHA512

    53e58d80069bfa0159c88598d544ff009c6823150b886e606b8ce00bc3d1c8619c8ce495fc564e5fc6d397a0c461d707c30684ee2d622970230a84b40401ab59

  • SSDEEP

    24576:mF1lOimK6SfT7rEu/hXpOfTi0kIU4y41sYBpJ312Zq:IZfou/hXYf3Lt11TJl2U

Malware Config

Extracted

Family

remcos

Botnet

STHost

C2

89.249.73.162:2479

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-TH3UQH

  • 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 1 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
    "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2020
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\siRiSxOKgeg.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2196
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\siRiSxOKgeg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAC08.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2656
    • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
      "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:2616

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    2da1bb5d56c739096dda464e90ebd96a

    SHA1

    cf944b7eab287c51943a6e9f4730c57076522f2e

    SHA256

    7958c2dcdccbafe80f3d4d68ec232d9d2e45f6cdb61258a55fca9ec6d5b959be

    SHA512

    d0b994f2f35c8d053268cb543db3b8b2491e547c4b8bfa958cd3f8e91b2d9283353e5c80924772336a9ea699ac528ba93ed1ad266e6e82cff3831c16799f17b3

  • C:\Users\Admin\AppData\Local\Temp\tmpAC08.tmp

    Filesize

    1KB

    MD5

    40da0e35842f475f5a5ab277fcbb7e2a

    SHA1

    2fdc04b65599e8ac6fd28ed40c389b03c138ffc8

    SHA256

    d24c9a2d5f89912cadd98be67b37b52b13de4f27a1da62a58a20c21cc03904e4

    SHA512

    b4b91c9359f90db5d572e05f4907b1ec74acc6297c15548326ce5f1089390908362b7b0fc4d336fae57dd7e206b53e4bf9217087a76e4d829b9d497119f193f1

  • memory/2020-37-0x00000000745C0000-0x0000000074CAE000-memory.dmp

    Filesize

    6.9MB

  • memory/2020-1-0x0000000000F60000-0x0000000001066000-memory.dmp

    Filesize

    1.0MB

  • memory/2020-2-0x00000000745C0000-0x0000000074CAE000-memory.dmp

    Filesize

    6.9MB

  • memory/2020-3-0x00000000003E0000-0x0000000000400000-memory.dmp

    Filesize

    128KB

  • memory/2020-4-0x0000000000630000-0x0000000000644000-memory.dmp

    Filesize

    80KB

  • memory/2020-5-0x0000000005E30000-0x0000000005EF0000-memory.dmp

    Filesize

    768KB

  • memory/2020-0-0x00000000745CE000-0x00000000745CF000-memory.dmp

    Filesize

    4KB

  • memory/2616-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2616-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-32-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-17-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-15-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-35-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-48-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-55-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-56-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-61-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-62-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-67-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-69-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-74-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2616-75-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB