Analysis

  • max time kernel
    148s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    30/10/2024, 02:24

General

  • Target

    4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe

  • Size

    976KB

  • MD5

    fa638e5dcb26f16f0c960ed10f387782

  • SHA1

    85fefdf55321e998f93ebb52c63c275863e14e21

  • SHA256

    4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769

  • SHA512

    f1ccbd0af2a2bb0935df69f4471260c1056c5cca587294154dc0794f4642b381bbf87de5a757afa711434d17787cfa94e652c60f5a55ac51522626581f790bae

  • SSDEEP

    24576:KVLOy/gpKgVD/MXQPlv2aOxwyi85CDRmueO0kF:K9ObpKkMgPlv2aOyyP5CxX

Malware Config

Extracted

Family

remcos

Botnet

TEEWIRE10/27/24

C2

teebro1800.dynamic-dns.net:2195

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-ISGDIO

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Remcos family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

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

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe
    "C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1248
    • 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\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1516
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yVSkoplfDgy.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2876
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yVSkoplfDgy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1297.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2888
    • C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe
      "C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe"
      2⤵
        PID:2700
      • C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe
        "C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe"
        2⤵
          PID:2472
        • C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe
          "C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe"
          2⤵
            PID:2812
          • C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe
            "C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe"
            2⤵
              PID:2912
            • C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe
              "C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe"
              2⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of SetWindowsHookEx
              PID:2844

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\ProgramData\remcos\logs.dat

                  Filesize

                  144B

                  MD5

                  19c8d95399e21b35ac98311489ddf9c7

                  SHA1

                  0a461112b88cc1b1a9f1c9fd2d3aae882d92e6f8

                  SHA256

                  d27405d30f880fda173347d126f7c187f4cc3adbf9a1c7a0407b70319885d5dc

                  SHA512

                  92aad2d3208405aaa575d298f0dff7c3f12aa25d8acd0f253c2ce7fd61b6ff104ead485a9d47a30f1de840eaf81f78b677c259d267ae531f4bef3956aeb58602

                • C:\Users\Admin\AppData\Local\Temp\tmp1297.tmp

                  Filesize

                  1KB

                  MD5

                  bcf91d2d43b60237c21951070433d9f6

                  SHA1

                  138116d16cd8750de7e2ca14cb0434a88a188ddd

                  SHA256

                  d0ebac8c63917a6bd996e07c23521315d781e0c343aae204d779e39e98a475ae

                  SHA512

                  de9731cfde1e62c9d1b465428610db6cd3c6ad06c9b232f70e35aff144f96e2865facb08e98403c2b3358221049df1a5b450c5195269e1a0572c28fcacca78af

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

                  Filesize

                  7KB

                  MD5

                  5149c5ecf0ba7cc188aa47405e90c1fc

                  SHA1

                  4317540ffffb7e359877221f7067608582e64625

                  SHA256

                  99ab05a88e3d5b7bd16e516d7569511469a10ff28086bc3d2a0bbfeed8e845ec

                  SHA512

                  dab3c195934a9e0543f82f92d3c7e6f789a8b1012ec2ac1bd1f475a9625f6732a800aa6d7ffbfecb77de8398ce97be165bc38a80f79bb2fbf80cb3eb6c696005

                • memory/1248-0-0x00000000748CE000-0x00000000748CF000-memory.dmp

                  Filesize

                  4KB

                • memory/1248-1-0x00000000002E0000-0x00000000003DA000-memory.dmp

                  Filesize

                  1000KB

                • memory/1248-2-0x00000000748C0000-0x0000000074FAE000-memory.dmp

                  Filesize

                  6.9MB

                • memory/1248-3-0x0000000001EC0000-0x0000000001EDE000-memory.dmp

                  Filesize

                  120KB

                • memory/1248-4-0x00000000748CE000-0x00000000748CF000-memory.dmp

                  Filesize

                  4KB

                • memory/1248-5-0x00000000748C0000-0x0000000074FAE000-memory.dmp

                  Filesize

                  6.9MB

                • memory/1248-6-0x0000000005D50000-0x0000000005E0E000-memory.dmp

                  Filesize

                  760KB

                • memory/1248-42-0x00000000748C0000-0x0000000074FAE000-memory.dmp

                  Filesize

                  6.9MB

                • memory/2844-31-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-43-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-37-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                  Filesize

                  4KB

                • memory/2844-33-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-41-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-36-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-29-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-27-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-25-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-23-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-39-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-21-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-48-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-49-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-19-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-54-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-55-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-61-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-62-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-67-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-68-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-74-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB

                • memory/2844-75-0x0000000000400000-0x000000000047F000-memory.dmp

                  Filesize

                  508KB