Analysis

  • max time kernel
    147s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    13/02/2024, 02:38

General

  • Target

    2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe

  • Size

    990KB

  • MD5

    ae507105cceba5aacb48465edc216829

  • SHA1

    3ce82cbc3bfe6ce6cc80548b3972fe50474ee58d

  • SHA256

    2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847

  • SHA512

    789fb309e65a1cff6b56ea1101aaa81739ab7a9ac4082aea12a6d4349cb2b18daf4b1417817e4425dadcd3171be7b4946f032ffe32ff5e5dc5497d6c8ae0e5bf

  • SSDEEP

    24576:5Xz87bPA2b+O0v7c+6ShVZ5II39pexAJSgEiYG77:5Xz87k/O0vAkhVZ63KMG7

Malware Config

Extracted

Family

remcos

Botnet

DESK

C2

198.27.121.194:2024

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-EQJXDT

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 29 IoCs
  • Detects executables built or packed with MPress PE compressor 18 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 2 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 2 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 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
  • 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 22 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
    "C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2232
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LCIBkTUxHQE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCA32.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2784
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\LCIBkTUxHQE.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2588
    • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
      "C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2524
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\zrckrhklktzhugjrwfbimxmpkjm"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:2548
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\blpvsavefbrmemfunqnkxcgglqehvm"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2968
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\pwxrrpzjwlhcssvnnvghjkrg"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1660

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          2B

          MD5

          f3b25701fe362ec84616a93a45ce9998

          SHA1

          d62636d8caec13f04e28442a0a6fa1afeb024bbb

          SHA256

          b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

          SHA512

          98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

        • C:\Users\Admin\AppData\Local\Temp\tmpCA32.tmp

          Filesize

          1KB

          MD5

          d1988e50bc382ff8af6585d2e9240adc

          SHA1

          ac12f516d487b802a3a93b941c0b5ee6f8c82fe7

          SHA256

          b1101df26f5e9266d5a6ccae05665e2ce1c18bf1242eb8e418f98e72599936ff

          SHA512

          35b35933e5bb2e0d86d8fb7b2b94d9426d374bb9a34613274375d36d807ab6a6be33b262aab6aaf442598ad54d4f8f0411253ee496289677dff5557f7cd40e81

        • memory/1660-52-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1660-56-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1660-59-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1660-75-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1660-58-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2232-5-0x0000000000B90000-0x0000000000B9E000-memory.dmp

          Filesize

          56KB

        • memory/2232-8-0x0000000004BB0000-0x0000000004BF0000-memory.dmp

          Filesize

          256KB

        • memory/2232-7-0x0000000074470000-0x0000000074B5E000-memory.dmp

          Filesize

          6.9MB

        • memory/2232-6-0x0000000004DF0000-0x0000000004EB6000-memory.dmp

          Filesize

          792KB

        • memory/2232-4-0x0000000000A40000-0x0000000000A4A000-memory.dmp

          Filesize

          40KB

        • memory/2232-0-0x0000000000BC0000-0x0000000000CBE000-memory.dmp

          Filesize

          1016KB

        • memory/2232-29-0x0000000074470000-0x0000000074B5E000-memory.dmp

          Filesize

          6.9MB

        • memory/2232-3-0x0000000000970000-0x0000000000984000-memory.dmp

          Filesize

          80KB

        • memory/2232-2-0x0000000004BB0000-0x0000000004BF0000-memory.dmp

          Filesize

          256KB

        • memory/2232-1-0x0000000074470000-0x0000000074B5E000-memory.dmp

          Filesize

          6.9MB

        • memory/2524-43-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-85-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2524-20-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-94-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-93-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-92-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-91-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-90-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-19-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-18-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-17-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-89-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-16-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-15-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-14-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-41-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-40-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-32-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-45-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-42-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-47-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-48-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-49-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-30-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-88-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2524-31-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-87-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-21-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-86-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-80-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2524-83-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2524-26-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-33-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-84-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2524-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2524-77-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-24-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2524-78-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2548-54-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2548-79-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2548-62-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2548-67-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2548-57-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2588-39-0x000000006E870000-0x000000006EE1B000-memory.dmp

          Filesize

          5.7MB

        • memory/2588-34-0x000000006E870000-0x000000006EE1B000-memory.dmp

          Filesize

          5.7MB

        • memory/2588-35-0x0000000002800000-0x0000000002840000-memory.dmp

          Filesize

          256KB

        • memory/2588-36-0x000000006E870000-0x000000006EE1B000-memory.dmp

          Filesize

          5.7MB

        • memory/2588-37-0x0000000002800000-0x0000000002840000-memory.dmp

          Filesize

          256KB

        • memory/2588-38-0x0000000002800000-0x0000000002840000-memory.dmp

          Filesize

          256KB

        • memory/2968-69-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2968-64-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2968-70-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2968-68-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB