Analysis

  • max time kernel
    148s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    29-08-2024 20:17

General

  • Target

    f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe

  • Size

    939KB

  • MD5

    ca4ccb77c304e8074abd359dd086ede4

  • SHA1

    4a17bc625d34ccde78a62db109877f8e9d808d70

  • SHA256

    f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1

  • SHA512

    f2ee3df238385bcadb32dd658330e825252de969d8a1e24a0457e8f7268c362d8c73420f2e062e920d6a3e975f2b74a091475a63e0150837af9e013a674a71f2

  • SSDEEP

    24576:kEbp9p29m6p2SxSrExb5Ag+PmiCix5InZg0SO:Xl90X8Axb5Ag+Pm7O5Ie0SO

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:2404

67.207.161.204:2404

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-ZA03K9

  • 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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 7 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 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
  • 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.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe
    "C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1640
    • C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe
      "C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1728
      • C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe
        C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe /stext "C:\Users\Admin\AppData\Local\Temp\yduqipsccroicebhwxluzhyvhflfgt"
        3⤵
          PID:2620
        • C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe
          C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe /stext "C:\Users\Admin\AppData\Local\Temp\yduqipsccroicebhwxluzhyvhflfgt"
          3⤵
            PID:2628
          • C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe
            C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe /stext "C:\Users\Admin\AppData\Local\Temp\yduqipsccroicebhwxluzhyvhflfgt"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:2652
          • C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe
            C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe /stext "C:\Users\Admin\AppData\Local\Temp\ifaijhdvqzgvelplniyvkmtmqtvoaeeud"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:2732
          • C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe
            C:\Users\Admin\AppData\Local\Temp\f127eced7a835fecf3453bcb307040fb4e91bfc0c63983d2a8d6c0dd72a4e5c1.exe /stext "C:\Users\Admin\AppData\Local\Temp\lzntcz"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2444

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        2B

        MD5

        f3b25701fe362ec84616a93a45ce9998

        SHA1

        d62636d8caec13f04e28442a0a6fa1afeb024bbb

        SHA256

        b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

        SHA512

        98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

      • memory/1640-23-0x0000000074080000-0x000000007476E000-memory.dmp

        Filesize

        6.9MB

      • memory/1640-1-0x00000000008E0000-0x00000000009D0000-memory.dmp

        Filesize

        960KB

      • memory/1640-2-0x0000000074080000-0x000000007476E000-memory.dmp

        Filesize

        6.9MB

      • memory/1640-3-0x00000000006A0000-0x00000000006B8000-memory.dmp

        Filesize

        96KB

      • memory/1640-4-0x000000007408E000-0x000000007408F000-memory.dmp

        Filesize

        4KB

      • memory/1640-5-0x0000000074080000-0x000000007476E000-memory.dmp

        Filesize

        6.9MB

      • memory/1640-6-0x00000000050C0000-0x0000000005180000-memory.dmp

        Filesize

        768KB

      • memory/1640-0-0x000000007408E000-0x000000007408F000-memory.dmp

        Filesize

        4KB

      • memory/1728-31-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-56-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-19-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-20-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-14-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-17-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/1728-21-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-13-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-22-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-10-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-11-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-9-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-24-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-25-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-26-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-27-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-28-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-29-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-8-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-71-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-70-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-69-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-68-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-67-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-66-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-64-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-65-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-63-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-62-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/1728-61-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/1728-58-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/1728-12-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1728-7-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2444-45-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2444-47-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2444-48-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2652-42-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2652-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2652-34-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2652-54-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2652-36-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2652-46-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2732-41-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2732-49-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2732-43-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2732-40-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2732-57-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB