Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25-09-2024 02:36

General

  • Target

    d7b82542403c06b63adcd6c4a46614ebc04d903c9c404097d30cc85e0237c2bc.exe

  • Size

    881KB

  • MD5

    a1b7c41a0ef9eb2af3337a97127329d9

  • SHA1

    c94ffbdc29ab82e90b704e33838a1ea6af3cf14a

  • SHA256

    d7b82542403c06b63adcd6c4a46614ebc04d903c9c404097d30cc85e0237c2bc

  • SHA512

    4cd922ffff1940fdea5350b98a54954970f200c3a5c23c2117f8cbcf48bf389c170506b9760b949357d378734e60634512a2801f9a37512f7cf6f12a97147e1e

  • SSDEEP

    24576:5rEmwPVpOaOXAHs2NAZZHy0SUAP2F/cvn:SZtpxOl2NAZ5fD/

Malware Config

Extracted

Family

remcos

Botnet

mekus

C2

dpm-sael.com:2017

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

    meckus-ODY51K

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d7b82542403c06b63adcd6c4a46614ebc04d903c9c404097d30cc85e0237c2bc.exe
    "C:\Users\Admin\AppData\Local\Temp\d7b82542403c06b63adcd6c4a46614ebc04d903c9c404097d30cc85e0237c2bc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2008
    • 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\d7b82542403c06b63adcd6c4a46614ebc04d903c9c404097d30cc85e0237c2bc.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2800
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rxoPEmTYk.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1136
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rxoPEmTYk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2202.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2940
    • C:\Users\Admin\AppData\Local\Temp\d7b82542403c06b63adcd6c4a46614ebc04d903c9c404097d30cc85e0237c2bc.exe
      "C:\Users\Admin\AppData\Local\Temp\d7b82542403c06b63adcd6c4a46614ebc04d903c9c404097d30cc85e0237c2bc.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2092

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    7f2fde5e1171726c16f34b36f8a24db5

    SHA1

    f3339a76f0b29223b18651b3c6a9931671f697c4

    SHA256

    a682aff57fa18b095f2251d3ce33aaa8b6f4177e6100f1650080d3422ae017c5

    SHA512

    a2c97f5b69eece0733195455400850a2819f5a6ab00a599c96ad77099fa6e5c9872fc150dc9cf9cef3df86f156f30718a0e7f48b5be36dabe6e584df116025d8

  • C:\Users\Admin\AppData\Local\Temp\tmp2202.tmp

    Filesize

    1KB

    MD5

    9752bb7fccc9967498df7fcf9ba07afb

    SHA1

    409b45c1bdfa2d3ffc99c2613ef4e477b71284d4

    SHA256

    856d6fd6e14b402745d0f2d190413ff64521f7225d85d2d5dfe391a392baf580

    SHA512

    e1f3d24b75b1a44b59a0ce70f771202b419980892faaa91a4e61e4439f8e29201e218223624f8e18e4efb4fe3511e1c206759a69d62dd975fed98c1c11f92887

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\HLNPFRD6PBF2F1JNJQOE.temp

    Filesize

    7KB

    MD5

    a6fee0214ab9c789a88096331780a43c

    SHA1

    c8dd697e7769888f50963229d108c5b7cadd888d

    SHA256

    448e1b2f9f2acca1dd23175bd3955e162b9a56560b60e133f0631b7476e841a9

    SHA512

    3c1a6882777d34c5bf0bb891f806f1aa7f2a0a84ff7cc63e548b24b44ba11c70a95dba9a7fc2b2f9406cdbe3ba095d71e94e31dd07b33eb476a80ff27a319e95

  • memory/2008-41-0x0000000074900000-0x0000000074FEE000-memory.dmp

    Filesize

    6.9MB

  • memory/2008-1-0x0000000000270000-0x0000000000352000-memory.dmp

    Filesize

    904KB

  • memory/2008-2-0x0000000074900000-0x0000000074FEE000-memory.dmp

    Filesize

    6.9MB

  • memory/2008-3-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2008-4-0x0000000074900000-0x0000000074FEE000-memory.dmp

    Filesize

    6.9MB

  • memory/2008-5-0x00000000056C0000-0x0000000005780000-memory.dmp

    Filesize

    768KB

  • memory/2008-0-0x000000007490E000-0x000000007490F000-memory.dmp

    Filesize

    4KB

  • memory/2092-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2092-32-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-35-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-52-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-40-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-67-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-75-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-76-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-84-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2092-83-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB