Analysis

  • max time kernel
    149s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/02/2024, 06:51

General

  • Target
    PO-22385.exe
  • Size 1.2MB
  • Sample240207-hmhfesedd3
  • SHA256 f197f3a4f1a28613822c87e81da383affc805eebfc7f375ee32da141e97c333c
  • MD5 SHA1 SHA512 SSDEEP

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 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 9 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 2 IoCs
  • Suspicious use of SetThreadContext 7 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • 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 31 IoCs
  • Suspicious behavior: MapViewOfSection 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO-22385.exe
    "C:\Users\Admin\AppData\Local\Temp\PO-22385.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4460
    • 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-22385.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:832
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WPasZKJQnCPqBZ.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4404
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WPasZKJQnCPqBZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE659.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1424
    • C:\Users\Admin\AppData\Local\Temp\PO-22385.exe
      "C:\Users\Admin\AppData\Local\Temp\PO-22385.exe"
      2⤵
        PID:2676
      • C:\Users\Admin\AppData\Local\Temp\PO-22385.exe
        "C:\Users\Admin\AppData\Local\Temp\PO-22385.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:2852
        • C:\Users\Admin\AppData\Local\Temp\PO-22385.exe
          C:\Users\Admin\AppData\Local\Temp\PO-22385.exe /stext "C:\Users\Admin\AppData\Local\Temp\vzwlrslicun"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4516
        • C:\Users\Admin\AppData\Local\Temp\PO-22385.exe
          C:\Users\Admin\AppData\Local\Temp\PO-22385.exe /stext "C:\Users\Admin\AppData\Local\Temp\lwibqaa"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:1728
        • C:\Users\Admin\AppData\Local\Temp\PO-22385.exe
          C:\Users\Admin\AppData\Local\Temp\PO-22385.exe /stext "C:\Users\Admin\AppData\Local\Temp\bcdi"
          3⤵
          • Suspicious use of UnmapMainImage
          PID:2020
        • C:\Users\Admin\AppData\Local\Temp\PO-22385.exe
          C:\Users\Admin\AppData\Local\Temp\PO-22385.exe /stext "C:\Users\Admin\AppData\Local\Temp\bcdi"
          3⤵
            PID:1876
          • C:\Users\Admin\AppData\Local\Temp\PO-22385.exe
            C:\Users\Admin\AppData\Local\Temp\PO-22385.exe /stext "C:\Users\Admin\AppData\Local\Temp\sipvojqvmzjrypvwsixkfjwhgbrraucsb"
            3⤵
            • Accesses Microsoft Outlook accounts
            PID:1980
          • C:\Users\Admin\AppData\Local\Temp\PO-22385.exe
            C:\Users\Admin\AppData\Local\Temp\PO-22385.exe /stext "C:\Users\Admin\AppData\Local\Temp\qojdorftqrrmwjzkaxkruwcqfuzihj"
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:3652
          • C:\Users\Admin\AppData\Local\Temp\PO-22385.exe
            C:\Users\Admin\AppData\Local\Temp\PO-22385.exe /stext "C:\Users\Admin\AppData\Local\Temp\dccopc"
            3⤵
              PID:1272
            • C:\Users\Admin\AppData\Local\Temp\PO-22385.exe
              C:\Users\Admin\AppData\Local\Temp\PO-22385.exe /stext "C:\Users\Admin\AppData\Local\Temp\dccopc"
              3⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4284
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2020 -s 12
          1⤵
          • Program crash
          PID:3116
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2020 -ip 2020
          1⤵
            PID:1596

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                __PSScriptPolicyTest_lvdilul2.bmn.ps1

                • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lvdilul2.bmn.ps1
                • Size 60B
                • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                • MD5 SHA1 SHA512

                qojdorftqrrmwjzkaxkruwcqfuzihj

                • Path C:\Users\Admin\AppData\Local\Temp\qojdorftqrrmwjzkaxkruwcqfuzihj
                • Size 4KB
                • SHA256 b92f48c215f2d309a748e67787283bb2c61bbce1faf7dcb3b917f57be92b28e2
                • MD5 SHA1 SHA512 SSDEEP

                tmpE659.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\tmpE659.tmp
                • Size 1KB
                • SHA256 241ff5ea8859637c0ba2cb944cb2316d9a01f2ee62b75d3ae3b4c69127855a22
                • MD5 SHA1 SHA512

                memory/832-93-0x0000000007DA0000-0x0000000007DB1000-memory.dmp

                memory/832-67-0x000000007F720000-0x000000007F730000-memory.dmp

                memory/832-86-0x0000000005510000-0x0000000005520000-memory.dmp

                memory/832-38-0x00000000062D0000-0x0000000006624000-memory.dmp

                memory/832-84-0x0000000007860000-0x0000000007903000-memory.dmp

                memory/832-28-0x0000000006260000-0x00000000062C6000-memory.dmp

                memory/832-87-0x0000000007BA0000-0x0000000007BBA000-memory.dmp

                memory/832-25-0x00000000057B0000-0x00000000057D2000-memory.dmp

                memory/832-73-0x00000000752F0000-0x000000007533C000-memory.dmp

                memory/832-101-0x0000000007EC0000-0x0000000007EC8000-memory.dmp

                memory/832-19-0x0000000005B50000-0x0000000006178000-memory.dmp

                memory/832-18-0x0000000074A40000-0x00000000751F0000-memory.dmp

                memory/832-20-0x0000000005510000-0x0000000005520000-memory.dmp

                memory/832-17-0x0000000002F70000-0x0000000002FA6000-memory.dmp

                memory/832-99-0x0000000007DE0000-0x0000000007DF4000-memory.dmp

                memory/832-21-0x0000000005510000-0x0000000005520000-memory.dmp

                memory/832-98-0x0000000007DD0000-0x0000000007DDE000-memory.dmp

                memory/832-108-0x0000000074A40000-0x00000000751F0000-memory.dmp

                memory/832-27-0x00000000061F0000-0x0000000006256000-memory.dmp

                memory/1728-111-0x0000000000400000-0x0000000000457000-memory.dmp

                memory/1728-115-0x0000000000400000-0x0000000000457000-memory.dmp

                memory/1728-118-0x0000000000400000-0x0000000000457000-memory.dmp

                memory/1728-121-0x0000000000400000-0x0000000000457000-memory.dmp

                memory/1980-138-0x0000000000400000-0x0000000000457000-memory.dmp

                memory/2020-110-0x0000000000400000-0x0000000000478000-memory.dmp

                memory/2852-48-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-149-0x0000000010000000-0x0000000010019000-memory.dmp

                memory/2852-52-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-159-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-56-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-57-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-158-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-58-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-157-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-51-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-156-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-154-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-49-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-155-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-146-0x0000000010000000-0x0000000010019000-memory.dmp

                memory/2852-106-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-152-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-153-0x0000000010000000-0x0000000010019000-memory.dmp

                memory/2852-151-0x0000000010000000-0x0000000010019000-memory.dmp

                memory/2852-92-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-150-0x0000000010000000-0x0000000010019000-memory.dmp

                memory/2852-103-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-90-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-96-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-97-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-95-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-94-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/2852-141-0x0000000000400000-0x0000000000482000-memory.dmp

                memory/3652-131-0x0000000000400000-0x0000000000478000-memory.dmp

                memory/3652-128-0x0000000000400000-0x0000000000478000-memory.dmp

                memory/3652-144-0x0000000000400000-0x0000000000478000-memory.dmp

                memory/4284-142-0x0000000000400000-0x0000000000424000-memory.dmp

                memory/4404-26-0x0000000074A40000-0x00000000751F0000-memory.dmp

                memory/4404-89-0x0000000007120000-0x000000000712A000-memory.dmp

                memory/4404-61-0x00000000752F0000-0x000000007533C000-memory.dmp

                memory/4404-54-0x0000000005D80000-0x0000000005D9E000-memory.dmp

                memory/4404-107-0x0000000074A40000-0x00000000751F0000-memory.dmp

                memory/4404-55-0x0000000005E30000-0x0000000005E7C000-memory.dmp

                memory/4404-59-0x000000007F240000-0x000000007F250000-memory.dmp

                memory/4404-72-0x0000000006D50000-0x0000000006D6E000-memory.dmp

                memory/4404-85-0x0000000002620000-0x0000000002630000-memory.dmp

                memory/4404-91-0x0000000007330000-0x00000000073C6000-memory.dmp

                memory/4404-74-0x0000000002620000-0x0000000002630000-memory.dmp

                memory/4404-88-0x00000000076F0000-0x0000000007D6A000-memory.dmp

                memory/4404-60-0x0000000006D10000-0x0000000006D42000-memory.dmp

                memory/4404-23-0x0000000002620000-0x0000000002630000-memory.dmp

                memory/4404-22-0x0000000002620000-0x0000000002630000-memory.dmp

                memory/4404-100-0x00000000073F0000-0x000000000740A000-memory.dmp

                memory/4460-2-0x0000000005270000-0x0000000005814000-memory.dmp

                memory/4460-53-0x0000000074A40000-0x00000000751F0000-memory.dmp

                memory/4460-5-0x0000000004C90000-0x0000000004C9A000-memory.dmp

                memory/4460-12-0x0000000004EE0000-0x0000000004EF0000-memory.dmp

                memory/4460-3-0x0000000004CC0000-0x0000000004D52000-memory.dmp

                memory/4460-1-0x0000000074A40000-0x00000000751F0000-memory.dmp

                memory/4460-4-0x0000000004EE0000-0x0000000004EF0000-memory.dmp

                memory/4460-9-0x0000000004EA0000-0x0000000004EAE000-memory.dmp

                memory/4460-7-0x0000000004DE0000-0x0000000004DF4000-memory.dmp

                memory/4460-6-0x0000000004FE0000-0x000000000507C000-memory.dmp

                memory/4460-11-0x0000000074A40000-0x00000000751F0000-memory.dmp

                memory/4460-8-0x0000000004E80000-0x0000000004E8A000-memory.dmp

                memory/4460-0-0x0000000000170000-0x00000000002A6000-memory.dmp

                memory/4460-10-0x0000000007D90000-0x0000000007E50000-memory.dmp

                memory/4516-120-0x0000000000400000-0x0000000000424000-memory.dmp

                memory/4516-122-0x0000000000400000-0x0000000000424000-memory.dmp

                memory/4516-113-0x0000000000400000-0x0000000000424000-memory.dmp

                memory/4516-116-0x0000000000400000-0x0000000000424000-memory.dmp

                memory/4516-119-0x0000000000400000-0x0000000000424000-memory.dmp