Analysis

  • max time kernel
    147s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    13/02/2024, 02:45

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) 27 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 2 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:2336
    • 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:2600
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LCIBkTUxHQE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDCD7.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2660
    • 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:1036
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\xuojuifnbfvjslmvhcxpbylnvzbhh"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2044
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\aoubvaqhpnowcsihynkrelfwwfsqaqecq"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:3016
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\kqzuw"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3024

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmpDCD7.tmp

          Filesize

          1KB

          MD5

          bbcebc1a8702e0f93fd0ad183455989e

          SHA1

          465b9cd2725684f2cf5ca89d573695505e61c4d4

          SHA256

          56bf12fff8fd386a0829a788a94ca6d746365c7971cae2d68da8f1a0c8e89d44

          SHA512

          772ca2ee9fd37885fc817c18cd984f108cd51d5e2fceb6ec36912bec89b92f0d09ed1c265c4d4ec7932fb1014163d01452ce64cc5d79a9ddcd2bde3fc5982a29

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

          Filesize

          2B

          MD5

          f3b25701fe362ec84616a93a45ce9998

          SHA1

          d62636d8caec13f04e28442a0a6fa1afeb024bbb

          SHA256

          b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

          SHA512

          98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

        • memory/1036-43-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-46-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-96-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-95-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-93-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-94-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-92-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1036-91-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-14-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-18-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-20-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-21-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-23-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-24-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-25-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-26-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-29-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1036-31-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-90-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-89-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-35-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-38-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-88-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1036-37-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-87-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-33-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-86-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1036-85-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1036-82-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1036-44-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-52-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-51-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-48-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-45-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1036-50-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2044-59-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2044-79-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2044-55-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2044-63-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2336-8-0x0000000004B30000-0x0000000004B70000-memory.dmp

          Filesize

          256KB

        • memory/2336-2-0x0000000004B30000-0x0000000004B70000-memory.dmp

          Filesize

          256KB

        • memory/2336-4-0x00000000006D0000-0x00000000006DA000-memory.dmp

          Filesize

          40KB

        • memory/2336-0-0x0000000000CD0000-0x0000000000DCE000-memory.dmp

          Filesize

          1016KB

        • memory/2336-6-0x0000000005BD0000-0x0000000005C96000-memory.dmp

          Filesize

          792KB

        • memory/2336-7-0x00000000742A0000-0x000000007498E000-memory.dmp

          Filesize

          6.9MB

        • memory/2336-1-0x00000000742A0000-0x000000007498E000-memory.dmp

          Filesize

          6.9MB

        • memory/2336-5-0x0000000000720000-0x000000000072E000-memory.dmp

          Filesize

          56KB

        • memory/2336-32-0x00000000742A0000-0x000000007498E000-memory.dmp

          Filesize

          6.9MB

        • memory/2336-3-0x0000000000520000-0x0000000000534000-memory.dmp

          Filesize

          80KB

        • memory/2600-34-0x000000006E710000-0x000000006ECBB000-memory.dmp

          Filesize

          5.7MB

        • memory/2600-36-0x000000006E710000-0x000000006ECBB000-memory.dmp

          Filesize

          5.7MB

        • memory/2600-42-0x000000006E710000-0x000000006ECBB000-memory.dmp

          Filesize

          5.7MB

        • memory/2600-41-0x0000000002870000-0x00000000028B0000-memory.dmp

          Filesize

          256KB

        • memory/2600-40-0x0000000002870000-0x00000000028B0000-memory.dmp

          Filesize

          256KB

        • memory/2600-39-0x0000000002870000-0x00000000028B0000-memory.dmp

          Filesize

          256KB

        • memory/3016-67-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/3016-81-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/3016-64-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/3016-60-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/3024-74-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3024-73-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3024-72-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3024-71-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3024-69-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB