Analysis

  • max time kernel
    150s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    15-09-2022 04:15

General

  • Target

    e1951d7c32816561ef8f00f5612a088479e1edb3a8cdbc7b7a48d8b60de5c541.exe

  • Size

    1.2MB

  • MD5

    03b3d450a89959d30f4bfee50b157ad0

  • SHA1

    0f47f3a40e0f2ababb272e54bf49fab8f0990009

  • SHA256

    e1951d7c32816561ef8f00f5612a088479e1edb3a8cdbc7b7a48d8b60de5c541

  • SHA512

    a5e3d89cb9c621dbb1bf89db362f064a32242a362bfd9b564f1e5d000f4b8ae6f82e1f82ddb7a44b70e6217fe760be2b67f940207b4ee9d3610f022080133d60

  • SSDEEP

    24576:YlubgKHsv8FE3UkFDYukPLx1S1cayY6Hnt+I0w4hp:Y4sKMUq3Uk50l1IxyrtAwe

Malware Config

Extracted

Family

remcos

Botnet

IP-REMCOS

C2

91.192.100.12:2404

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-JS00ZN

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 5 IoCs
  • Reads user/profile data of web browsers 2 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 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e1951d7c32816561ef8f00f5612a088479e1edb3a8cdbc7b7a48d8b60de5c541.exe
    "C:\Users\Admin\AppData\Local\Temp\e1951d7c32816561ef8f00f5612a088479e1edb3a8cdbc7b7a48d8b60de5c541.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1948
    • C:\Users\Admin\AppData\Local\Temp\e1951d7c32816561ef8f00f5612a088479e1edb3a8cdbc7b7a48d8b60de5c541.exe
      "C:\Users\Admin\AppData\Local\Temp\e1951d7c32816561ef8f00f5612a088479e1edb3a8cdbc7b7a48d8b60de5c541.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1280
      • C:\Users\Admin\AppData\Local\Temp\e1951d7c32816561ef8f00f5612a088479e1edb3a8cdbc7b7a48d8b60de5c541.exe
        C:\Users\Admin\AppData\Local\Temp\e1951d7c32816561ef8f00f5612a088479e1edb3a8cdbc7b7a48d8b60de5c541.exe /stext "C:\Users\Admin\AppData\Local\Temp\jzeuvil"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:976
      • C:\Users\Admin\AppData\Local\Temp\e1951d7c32816561ef8f00f5612a088479e1edb3a8cdbc7b7a48d8b60de5c541.exe
        C:\Users\Admin\AppData\Local\Temp\e1951d7c32816561ef8f00f5612a088479e1edb3a8cdbc7b7a48d8b60de5c541.exe /stext "C:\Users\Admin\AppData\Local\Temp\tujfobwzvm"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:1336
      • C:\Users\Admin\AppData\Local\Temp\e1951d7c32816561ef8f00f5612a088479e1edb3a8cdbc7b7a48d8b60de5c541.exe
        C:\Users\Admin\AppData\Local\Temp\e1951d7c32816561ef8f00f5612a088479e1edb3a8cdbc7b7a48d8b60de5c541.exe /stext "C:\Users\Admin\AppData\Local\Temp\ewoxptpsjuclz"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1016

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

1
T1081

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\jzeuvil
    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • memory/976-78-0x0000000000476274-mapping.dmp
  • memory/976-87-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/976-86-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/1016-84-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1016-82-0x0000000000422206-mapping.dmp
  • memory/1280-61-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1280-77-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1280-63-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1280-65-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1280-66-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1280-67-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1280-68-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1280-70-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1280-72-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1280-73-0x00000000004327A4-mapping.dmp
  • memory/1280-76-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1280-90-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1280-60-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1336-79-0x0000000000455238-mapping.dmp
  • memory/1336-85-0x0000000000400000-0x0000000000457000-memory.dmp
    Filesize

    348KB

  • memory/1336-89-0x0000000000400000-0x0000000000457000-memory.dmp
    Filesize

    348KB

  • memory/1948-59-0x0000000000FE0000-0x000000000105C000-memory.dmp
    Filesize

    496KB

  • memory/1948-58-0x00000000081F0000-0x00000000082C0000-memory.dmp
    Filesize

    832KB

  • memory/1948-57-0x0000000000410000-0x000000000041C000-memory.dmp
    Filesize

    48KB

  • memory/1948-56-0x00000000003C0000-0x00000000003D6000-memory.dmp
    Filesize

    88KB

  • memory/1948-55-0x0000000076031000-0x0000000076033000-memory.dmp
    Filesize

    8KB

  • memory/1948-54-0x00000000011D0000-0x000000000130E000-memory.dmp
    Filesize

    1.2MB