Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-12-2024 12:03

General

  • Target

    1733313724403c020f6e88b0c933bdcc8580dbdc997912d71ff6e423ca5d8288c03cec53d3177.dat-decoded.exe

  • Size

    481KB

  • MD5

    395a60d305eca089d0339e1f3cb58e9a

  • SHA1

    9910634adf12d8ebb2ba615c25561a60d6af1723

  • SHA256

    6cdbfdc2021a53982577b8707e68d5ee91243647ed86197f1e78ba042302d389

  • SHA512

    7fdf773d95a034a9042d91c3625a57ff98bcabfb54e0278958990c673aa0eddcf24bfadddbbb1859a14cfa63ad409b3eb33331ca52f5d0cc5b0a48917a117161

  • SSDEEP

    12288:nuD09AUkNIGBYYv4eK13x13nZHSRVMf139F5wIB7+IwtHwBtVxbesvZDS/+DY:a09AfNIEYsunZvZ19ZMs

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

216.9.226.100:3898

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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

    true

  • install_flag

    false

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    mic

  • mouse_option

    false

  • mutex

    Rmc-Q9T2QD

  • 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.

  • Remcos family
  • Detected Nirsoft tools 9 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1733313724403c020f6e88b0c933bdcc8580dbdc997912d71ff6e423ca5d8288c03cec53d3177.dat-decoded.exe
    "C:\Users\Admin\AppData\Local\Temp\1733313724403c020f6e88b0c933bdcc8580dbdc997912d71ff6e423ca5d8288c03cec53d3177.dat-decoded.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3492
    • C:\Users\Admin\AppData\Local\Temp\1733313724403c020f6e88b0c933bdcc8580dbdc997912d71ff6e423ca5d8288c03cec53d3177.dat-decoded.exe
      C:\Users\Admin\AppData\Local\Temp\1733313724403c020f6e88b0c933bdcc8580dbdc997912d71ff6e423ca5d8288c03cec53d3177.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\jnkpyhuwhmrgnzmhpkmvprolmzmyiht"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:1508
    • C:\Users\Admin\AppData\Local\Temp\1733313724403c020f6e88b0c933bdcc8580dbdc997912d71ff6e423ca5d8288c03cec53d3177.dat-decoded.exe
      C:\Users\Admin\AppData\Local\Temp\1733313724403c020f6e88b0c933bdcc8580dbdc997912d71ff6e423ca5d8288c03cec53d3177.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\lhpirzeyvujlxgjlgvzxawjcufezbskbxk"
      2⤵
      • Accesses Microsoft Outlook accounts
      • System Location Discovery: System Language Discovery
      PID:3336
    • C:\Users\Admin\AppData\Local\Temp\1733313724403c020f6e88b0c933bdcc8580dbdc997912d71ff6e423ca5d8288c03cec53d3177.dat-decoded.exe
      C:\Users\Admin\AppData\Local\Temp\1733313724403c020f6e88b0c933bdcc8580dbdc997912d71ff6e423ca5d8288c03cec53d3177.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\vcdasr"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3124

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\mic\logs.dat

    Filesize

    144B

    MD5

    fa130f8055ba148dc5ccc5e75ac785c7

    SHA1

    e20d3403c6dcde21b872feda89139ce857b6b821

    SHA256

    035bbf1461fe6522dc53c1935851ffcdd47f9993237296eda7f42e7a58bfb401

    SHA512

    1414de307655e8a7d8558f7c947d5a2e36cb1c5f40fed9ab1100334e4cff4fe54bd227bd509b6f3e2c5aa7d007e7af85735fcd41630df61c42d70c58d78241b2

  • C:\Users\Admin\AppData\Local\Temp\jnkpyhuwhmrgnzmhpkmvprolmzmyiht

    Filesize

    4KB

    MD5

    bc25ccf39db8626dc249529bcc8c5639

    SHA1

    3e9cbdb20a0970a3c13719a2f289d210cdcc9e1d

    SHA256

    b333f8c736c701bc826886f395d928731850cbce6db77be752b3cf7979114904

    SHA512

    9a546127bddc1d187e674cda82e6c5046cac7f3e6f9515aed68d5bff2264b9d679d857dd97270e10826cd11ce2d92d82dd7f9801e19027e346b60bcc814cca1a

  • memory/1508-27-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1508-21-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1508-22-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1508-5-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1508-1-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3124-15-0x0000000000430000-0x00000000004F9000-memory.dmp

    Filesize

    804KB

  • memory/3124-14-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3124-12-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3124-7-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3124-9-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3124-20-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3336-13-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3336-3-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3336-10-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3336-11-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3336-18-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3492-30-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3492-34-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3492-33-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3492-36-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3492-35-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3492-40-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB