Analysis

  • max time kernel
    149s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    15/02/2024, 11:03

General

  • Target

    PO-2143224.exe

  • Size

    865KB

  • MD5

    d90d929eed0b2f19a2dfc97207e4f1ed

  • SHA1

    abb561c141dab098b5d28f8d98fb290820b0f1a6

  • SHA256

    688e1a87b049676464e3aa5303d9a48f184da32c3fdfa0c092e1744153e761b0

  • SHA512

    6f463e82d2b3cba431bf6a7d7ef52075b52e694ba96599d66fd98564e9de0395f7237504acba82c7f2ff2c95dda366de3b53d02191dc12bde3134b9dd369d784

  • SSDEEP

    24576:BNP+nbEexncWPdhCCKlhOr8c/eQMNYCi0M:mbEqncAC1ieQMNYC

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.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 8 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 20 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe
    "C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2372
    • 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\PO-2143224.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2844
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TQbZIZmgTPXQc.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2704
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TQbZIZmgTPXQc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB951.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2584
    • C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe
      "C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1240
      • C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe
        C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe /stext "C:\Users\Admin\AppData\Local\Temp\tkjjgleykyvuktzpzkrzbz"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1996
      • C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe
        C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe /stext "C:\Users\Admin\AppData\Local\Temp\dmobgepzygnhmintqvdtemdww"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:2228
      • C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe
        C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe /stext "C:\Users\Admin\AppData\Local\Temp\ogumhoztmofmxojxagqupryfegwa"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:596

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          2B

          MD5

          f3b25701fe362ec84616a93a45ce9998

          SHA1

          d62636d8caec13f04e28442a0a6fa1afeb024bbb

          SHA256

          b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

          SHA512

          98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

        • C:\Users\Admin\AppData\Local\Temp\tmpB951.tmp

          Filesize

          1KB

          MD5

          02a04098970db5786b54b04362e35bd2

          SHA1

          fcb766725770a0cf2515e7c2daf74bdc36c9f48f

          SHA256

          46b9bd30fbedb67f61097e7d86aa3942387c921c5c454adcb14a2d3e825fec8f

          SHA512

          2b268ce877062fa2c63cc0ea5fc780a0827dd63aca994f4540f1ff222227aca3b9c58dc638d34fdf870cc37ea5c8a62a35a862c8ba66b35a1102880ffc756131

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\I4GVVACIY4SO497J4JCM.temp

          Filesize

          7KB

          MD5

          8e332a2995a3b3e77b6a46a31a98bc45

          SHA1

          50e0c61552f108d230a0a73c6f3c3af613e7860f

          SHA256

          5e90cabba004a1df052789af0db4d3becb1c104789d5b4418db6c1800dc65e94

          SHA512

          ef48f5f708d1cd27681484085599b91d1caf85b35a17d709be8c4f2477ef60e8f2c93ba437efadc118301a708ab6fad8775f5d43aedba9954ad4151a8812d934

        • memory/596-79-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/596-81-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/596-74-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/596-83-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/596-84-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1240-24-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-49-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-20-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-22-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-106-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-26-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-28-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-29-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-30-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-31-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1240-34-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-99-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-98-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-96-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1240-36-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-95-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1240-44-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-94-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1240-91-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1240-101-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-100-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-62-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-42-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-102-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1240-41-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-103-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-104-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-105-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-53-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-54-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-56-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-55-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-57-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-60-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1240-61-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1996-89-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1996-63-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1996-65-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1996-69-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1996-71-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1996-77-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2228-82-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2228-97-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2228-78-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2228-70-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2372-0-0x0000000000A40000-0x0000000000B1E000-memory.dmp

          Filesize

          888KB

        • memory/2372-1-0x0000000074980000-0x000000007506E000-memory.dmp

          Filesize

          6.9MB

        • memory/2372-2-0x0000000004D90000-0x0000000004DD0000-memory.dmp

          Filesize

          256KB

        • memory/2372-3-0x0000000000940000-0x0000000000952000-memory.dmp

          Filesize

          72KB

        • memory/2372-4-0x0000000000950000-0x0000000000962000-memory.dmp

          Filesize

          72KB

        • memory/2372-5-0x0000000005D40000-0x0000000005E00000-memory.dmp

          Filesize

          768KB

        • memory/2372-6-0x0000000074980000-0x000000007506E000-memory.dmp

          Filesize

          6.9MB

        • memory/2372-7-0x0000000004D90000-0x0000000004DD0000-memory.dmp

          Filesize

          256KB

        • memory/2372-37-0x0000000074980000-0x000000007506E000-memory.dmp

          Filesize

          6.9MB

        • memory/2704-40-0x0000000002A00000-0x0000000002A40000-memory.dmp

          Filesize

          256KB

        • memory/2704-39-0x000000006F810000-0x000000006FDBB000-memory.dmp

          Filesize

          5.7MB

        • memory/2704-43-0x000000006F810000-0x000000006FDBB000-memory.dmp

          Filesize

          5.7MB

        • memory/2704-47-0x0000000002A00000-0x0000000002A40000-memory.dmp

          Filesize

          256KB

        • memory/2704-51-0x000000006F810000-0x000000006FDBB000-memory.dmp

          Filesize

          5.7MB

        • memory/2844-38-0x000000006F810000-0x000000006FDBB000-memory.dmp

          Filesize

          5.7MB

        • memory/2844-45-0x0000000002B10000-0x0000000002B50000-memory.dmp

          Filesize

          256KB

        • memory/2844-46-0x000000006F810000-0x000000006FDBB000-memory.dmp

          Filesize

          5.7MB

        • memory/2844-48-0x0000000002B10000-0x0000000002B50000-memory.dmp

          Filesize

          256KB

        • memory/2844-50-0x0000000002B10000-0x0000000002B50000-memory.dmp

          Filesize

          256KB

        • memory/2844-52-0x000000006F810000-0x000000006FDBB000-memory.dmp

          Filesize

          5.7MB