Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    06/12/2023, 14:07

General

  • Target

    FACTURA090000.exe

  • Size

    989KB

  • MD5

    f5029b4aa3e668aa60d5c3e52a2fbfe7

  • SHA1

    0130efa0cdf8baf5b25a41888a461aaa3bbb254a

  • SHA256

    a61cdf67459e5b97f33747c8a251b9112e402fa11eeac22c2aefe811af9508b5

  • SHA512

    5efbf0c8af8d267266ee8465888075e13e2631de3638273b8df6f3a9db0ca0d68e1cec1350c9fe62ab34397995b94d9756c20dbff5ae372c7e854a7ea131aa92

  • SSDEEP

    24576:X/uGGqtConVu2cpGa0I50EI2Rb/vBKjahiCcocFO:X/uGGwnSpSIGRi/Qjahc4

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.175.229.139:8087

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-IZFV1M

  • 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.

  • 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 4 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe
    "C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3036
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1620
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jCaIeJ.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2704
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jCaIeJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8F45.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2708
    • C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe
      "C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2628
      • C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe
        C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe /stext "C:\Users\Admin\AppData\Local\Temp\anrhumgnxfi"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2740
      • C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe
        C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe /stext "C:\Users\Admin\AppData\Local\Temp\lpxavxroloaqdgt"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:3016
      • C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe
        C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe /stext "C:\Users\Admin\AppData\Local\Temp\vjckwpbizwsvfuhzeh"
        3⤵
          PID:1556
        • C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe
          C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe /stext "C:\Users\Admin\AppData\Local\Temp\vjckwpbizwsvfuhzeh"
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2040
        • C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe
          C:\Users\Admin\AppData\Local\Temp\FACTURA090000.exe /stext "C:\Users\Admin\AppData\Local\Temp\vjckwpbizwsvfuhzeh"
          3⤵
            PID:1460

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\ProgramData\remcos\logs.dat

              Filesize

              144B

              MD5

              5547374c9c9ac75ad1593d8dfecba104

              SHA1

              56c9a01c96a663a83870f0dcef02478c2de8443b

              SHA256

              2120b7244553657fb6314a9f851949d594a63b3377c5831b3b536c3a48e5ccfc

              SHA512

              d201aa5b0afff40dabbd420202dcb40aa0eb0124b71a9737b9e815beceb81cfffb3fe0e6c7087a0bd9633ba194e8ee367444c239d0d1aeba60810d36bd9c222f

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

              Filesize

              2B

              MD5

              f3b25701fe362ec84616a93a45ce9998

              SHA1

              d62636d8caec13f04e28442a0a6fa1afeb024bbb

              SHA256

              b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

              SHA512

              98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

            • C:\Users\Admin\AppData\Local\Temp\tmp8F45.tmp

              Filesize

              1KB

              MD5

              a48bfee41bcf023f5bc34f930b7f93d6

              SHA1

              85a326d34e46588c1faf9594734827762937c13f

              SHA256

              87b67277dec1571899136fcaa33b64f06f1772b64c85661397bf1e1d1e114c33

              SHA512

              e5aa3a73d1c24edcaae33d29a044ba1f857f90214d1426192ce677cb41314b7972dc8b65ef8ae680b0d6537e4b4ca2979ab8198f94207ae5f46f68c33f16b8da

            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\HNHOJSVFKPND8USG3ZFN.temp

              Filesize

              7KB

              MD5

              975155c88f5d6cb3f72d2e2db170ccb0

              SHA1

              df0b534d6a27f340690c8054b7198e33c4ac2a9a

              SHA256

              e8b3ff96675f982eedd55ee6e42e16251aa4f0f1bf03b40f58a76e101936d40c

              SHA512

              6fbe5df3599a9d9fe2ea87c32701eca4e17d51153a920956c5aab2c8de2c6b838df11085c662ee040fdb17977084ceae1b566349d56d310a028b41f6b77aa540

            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

              Filesize

              7KB

              MD5

              975155c88f5d6cb3f72d2e2db170ccb0

              SHA1

              df0b534d6a27f340690c8054b7198e33c4ac2a9a

              SHA256

              e8b3ff96675f982eedd55ee6e42e16251aa4f0f1bf03b40f58a76e101936d40c

              SHA512

              6fbe5df3599a9d9fe2ea87c32701eca4e17d51153a920956c5aab2c8de2c6b838df11085c662ee040fdb17977084ceae1b566349d56d310a028b41f6b77aa540

            • memory/1620-54-0x000000006ECB0000-0x000000006F25B000-memory.dmp

              Filesize

              5.7MB

            • memory/1620-36-0x000000006ECB0000-0x000000006F25B000-memory.dmp

              Filesize

              5.7MB

            • memory/1620-40-0x000000006ECB0000-0x000000006F25B000-memory.dmp

              Filesize

              5.7MB

            • memory/1620-43-0x0000000002610000-0x0000000002650000-memory.dmp

              Filesize

              256KB

            • memory/1620-45-0x0000000002610000-0x0000000002650000-memory.dmp

              Filesize

              256KB

            • memory/2040-74-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/2040-70-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/2040-72-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/2040-73-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/2628-44-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-87-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/2628-25-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-26-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2628-29-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-119-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-118-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-33-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-34-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-23-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-37-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-111-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-39-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-41-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-22-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-110-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-19-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-46-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-47-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-103-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-20-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-102-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-49-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-50-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-52-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-98-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/2628-21-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-94-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-93-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-91-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-89-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-88-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/2628-83-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/2628-24-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2628-86-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/2704-32-0x000000006ECB0000-0x000000006F25B000-memory.dmp

              Filesize

              5.7MB

            • memory/2704-38-0x0000000002500000-0x0000000002540000-memory.dmp

              Filesize

              256KB

            • memory/2704-42-0x000000006ECB0000-0x000000006F25B000-memory.dmp

              Filesize

              5.7MB

            • memory/2704-48-0x0000000002500000-0x0000000002540000-memory.dmp

              Filesize

              256KB

            • memory/2704-53-0x000000006ECB0000-0x000000006F25B000-memory.dmp

              Filesize

              5.7MB

            • memory/2740-62-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2740-80-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2740-57-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2740-60-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2740-64-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/3016-82-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/3016-63-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

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

              Filesize

              348KB

            • memory/3016-69-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/3036-1-0x0000000074190000-0x000000007487E000-memory.dmp

              Filesize

              6.9MB

            • memory/3036-6-0x00000000055B0000-0x0000000005668000-memory.dmp

              Filesize

              736KB

            • memory/3036-0-0x00000000013B0000-0x00000000014AE000-memory.dmp

              Filesize

              1016KB

            • memory/3036-5-0x00000000004B0000-0x00000000004BA000-memory.dmp

              Filesize

              40KB

            • memory/3036-2-0x0000000005190000-0x00000000051D0000-memory.dmp

              Filesize

              256KB

            • memory/3036-3-0x0000000000430000-0x000000000044A000-memory.dmp

              Filesize

              104KB

            • memory/3036-4-0x0000000000460000-0x0000000000468000-memory.dmp

              Filesize

              32KB

            • memory/3036-31-0x0000000074190000-0x000000007487E000-memory.dmp

              Filesize

              6.9MB