Analysis

  • max time kernel
    4s
  • max time network
    12s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    12/06/2026, 17:07

General

  • Target
    Stage0.exe
  • Size 844KB
  • Sample260612-vm3gtabv9l
  • SHA256 abd9e0b14bebbe2a41b964a2817b329d9f06f8dd4742e60720c59bf4e3c36149
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • skynet3.ydns.eu:10134

  • skynet2.ydns.eu:10134

Mutex
  • 744e7b6d-d4dd-411b-a584-485cec7bc407

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    skynet2.ydns.eu

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2026-03-24T15:32:36.450100836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    10134

  • default_group

    Xploit

  • enable_debug_mode

    true

  • gc_threshold

    1.0485754e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2497

  • max_packet_size

    1.0485757e+07

  • mutex

    744e7b6d-d4dd-411b-a584-485cec7bc407

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    skynet3.ydns.eu

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • set_critical_process

    true

  • timeout_interval

    4997

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • Family: NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Family: r77

    r77 is an open-source, userland rootkit.

  • r77 rootkit payload 1 IoCs

    Detects the payload of the r77 rootkit.

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • NSIS installer 2 IoCs
  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies registry class 9 IoCs
  • Suspicious behavior: EnumeratesProcesses 62 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 9 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Stage0.exe
    "C:\Users\Admin\AppData\Local\Temp\Stage0.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:6044
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1480
      • C:\Windows\system32\mshta.exe
        mshta vbscript:createobject("wscript.shell").run("""C:\Users\Admin\AppData\Local\Temp\install.bat"" nme",0)(window.close)
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4360
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" nme"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4416
          • C:\Users\Admin\AppData\Local\Temp\xploit.exe
            xploit.exe
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:6028
            • C:\ProgramData\281832\HIDE-LUMI.exe
              "C:\ProgramData\281832\HIDE-LUMI.exe"
              6⤵
                PID:5864
            • C:\Users\Admin\AppData\Local\Temp\HIDE-SHOCK.exe
              HIDE-SHOCK.exe
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:908
              • C:\Users\Admin\AppData\Local\Temp\67133.exe
                "C:\Users\Admin\AppData\Local\Temp\67133.exe"
                6⤵
                  PID:3732
              • C:\Users\Admin\AppData\Local\Temp\HIDE-NanoC.scr
                HIDE-NanoC.scr
                5⤵
                • Executes dropped EXE
                • Checks whether UAC is enabled
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:6060
              • C:\Windows\system32\reg.exe
                Reg Add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows" /V AppInit_DLLs /T REG_SZ /D "C:\Users\Admin\AppData\Local\Temp\r77-x86.dll,C:\Users\Admin\AppData\Local\Temp\r77-x64.dll" /F
                5⤵
                  PID:644
                • C:\Windows\system32\reg.exe
                  Reg Add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows" /V LoadAppInit_DLLs /T REG_DWORD /D 1 /F
                  5⤵
                    PID:3164
                  • C:\Windows\system32\reg.exe
                    Reg Add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows" /V RequireSignedAppInit_DLLs /T REG_DWORD /D 0 /F
                    5⤵
                      PID:548
                    • C:\Windows\system32\taskkill.exe
                      Taskkill /f /im explorer.exe
                      5⤵
                      • Loads dropped DLL
                      • Kills process with taskkill
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:5144
                    • C:\Windows\explorer.exe
                      explorer.exe
                      5⤵
                      • Boot or Logon Autostart Execution: Active Setup
                      • Loads dropped DLL
                      • Enumerates connected drives
                      • Modifies registry class
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      • Suspicious use of FindShellTrayWindow
                      • Suspicious use of SendNotifyMessage
                      PID:5620
                    • C:\Windows\system32\timeout.exe
                      timeout /t 5
                      5⤵
                      • Loads dropped DLL
                      • Delays execution with timeout.exe
                      • Suspicious behavior: EnumeratesProcesses
                      PID:1464
            • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
              "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
              1⤵
                PID:2104
              • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
                "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
                1⤵
                  PID:748
                • C:\Windows\system32\wbem\WmiApSrv.exe
                  C:\Windows\system32\wbem\WmiApSrv.exe
                  1⤵
                    PID:872

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

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                        Downloads

                        67133.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\67133.exe
                        • Size 957KB
                        • SHA256 26b0ea30b6c2bcaebaaec599b5379d2cb2b88c7d03c849c076f8e957ef086827
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        HIDE-NanoC.scr

                        • Path C:\Users\Admin\AppData\Local\Temp\HIDE-NanoC.scr
                        • Size 202KB
                        • SHA256 1cc38705a83580e6894697b50c46cba0687f94231463abcb96e91854d5b26824
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        HIDE-SHOCK.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\HIDE-SHOCK.exe
                        • Size 643KB
                        • SHA256 a10004c59524aa1b7095add83f2788e4f54270502a92e53e66f175e499df42c6
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        install.bat

                        • Path C:\Users\Admin\AppData\Local\Temp\install.bat
                        • Size 908B
                        • SHA256 b4a3a5a8fae3078ab8d6c126080bdd182fa8a383f50d7d0003cdd2b83632bf22
                        • MD5 SHA1 SHA512 TLSH

                        lib.dll

                        • Path C:\Users\Admin\AppData\Local\Temp\lib.dll
                        • Size 951KB
                        • SHA256 b60e987696a1d43d00fa5aab0d80a6755993af47b2d53a126af670ffeaa2bb7b
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        System.dll

                        • Path C:\Users\Admin\AppData\Local\Temp\nsm4AA1.tmp\System.dll
                        • Size 12KB
                        • SHA256 7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        r77-x64.dll

                        • Path C:\Users\Admin\AppData\Local\Temp\r77-x64.dll
                        • Size 244KB
                        • SHA256 be19546c094d96447752b768d1582900d64a4bc009dcd018a8e3f695da02f729
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        r77-x86.dll

                        • Path C:\Users\Admin\AppData\Local\Temp\r77-x86.dll
                        • Size 191KB
                        • SHA256 d7d13884ac4ff5fb2ab2b3e347098b34b1dee29e9d747ff9d1adefafa243927a
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        xploit.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\xploit.exe
                        • Size 221KB
                        • SHA256 3285668dad0199c52afd1f1509220405421d347e9c179d1b552a879a573858b6
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        Path.dat

                        • Path C:\Users\Admin\AppData\Roaming\Imminent\Path.dat
                        • Size 56B
                        • SHA256 46ccfe76495e969de33b60ebc75bc96fe10e3e0b44879818f466e83eb3e6feea
                        • MD5 SHA1 SHA512 TLSH

                        rootkit_debug.txt

                        • Path C:\rootkit_debug.txt
                        • Size 105B
                        • SHA256 44fa6825d3dbc85f2f9550aa0ed37cf5fe4f63ce98843295dc33e7a140d38737
                        • MD5 SHA1 SHA512

                        rootkit_debug.txt

                        • Path C:\rootkit_debug.txt
                        • Size 30B
                        • SHA256 cd6997b532056070997f6ec08aeca2fe43c9455736efbdcb6aad28e6bf536a80
                        • MD5 SHA1 SHA512

                        rootkit_debug.txt

                        • Path C:\rootkit_debug.txt
                        • Size 45B
                        • SHA256 1bdac41f11da4572138a95110cdaffa659839df021355d3ec32e455db59585d2
                        • MD5 SHA1 SHA512

                        memory/908-34-0x00000000055B0000-0x0000000005642000-memory.dmp

                        memory/908-28-0x0000000002DD0000-0x0000000002DF8000-memory.dmp

                        memory/908-38-0x0000000005F10000-0x0000000005F18000-memory.dmp

                        memory/908-35-0x0000000005B40000-0x0000000005BA6000-memory.dmp

                        memory/908-113-0x0000000006950000-0x0000000006967000-memory.dmp

                        memory/908-109-0x0000000006950000-0x0000000006967000-memory.dmp

                        memory/908-111-0x0000000006950000-0x0000000006967000-memory.dmp

                        memory/908-110-0x0000000006950000-0x0000000006967000-memory.dmp

                        memory/908-112-0x0000000006970000-0x0000000006971000-memory.dmp

                        memory/908-52-0x00000000059C0000-0x00000000059D8000-memory.dmp

                        memory/908-57-0x0000000005A10000-0x0000000005A26000-memory.dmp

                        memory/908-58-0x00000000061F0000-0x00000000061FA000-memory.dmp

                        memory/908-32-0x000000000A000000-0x000000000A5A6000-memory.dmp

                        memory/908-80-0x0000000007DE0000-0x0000000007DEE000-memory.dmp

                        memory/908-79-0x0000000007DD0000-0x0000000007DDC000-memory.dmp

                        memory/908-27-0x0000000000890000-0x0000000000938000-memory.dmp

                        memory/908-31-0x00000000099B0000-0x0000000009A4C000-memory.dmp

                        memory/908-37-0x0000000005EF0000-0x0000000005F00000-memory.dmp

                        memory/3732-90-0x000000006D790000-0x000000006DAAB000-memory.dmp

                        memory/6028-116-0x0000000007080000-0x0000000007097000-memory.dmp

                        memory/6028-122-0x0000000007080000-0x0000000007097000-memory.dmp

                        memory/6028-117-0x0000000007080000-0x0000000007097000-memory.dmp

                        memory/6028-118-0x00000000070A0000-0x00000000070A1000-memory.dmp

                        memory/6028-115-0x0000000007080000-0x0000000007097000-memory.dmp

                        memory/6044-1-0x000000001CCB0000-0x000000001CCC0000-memory.dmp

                        memory/6044-0-0x0000000000890000-0x000000000096A000-memory.dmp

                        memory/6060-102-0x00000000077F0000-0x0000000007807000-memory.dmp

                        memory/6060-48-0x0000000006DC0000-0x0000000006DC1000-memory.dmp

                        memory/6060-47-0x0000000006DB0000-0x0000000006DB5000-memory.dmp

                        memory/6060-46-0x0000000006DB0000-0x0000000006DB5000-memory.dmp

                        memory/6060-45-0x0000000006DB0000-0x0000000006DB5000-memory.dmp

                        memory/6060-101-0x00000000077C0000-0x00000000077C1000-memory.dmp

                        memory/6060-99-0x00000000077F0000-0x0000000007807000-memory.dmp

                        memory/6060-98-0x00000000077F0000-0x0000000007807000-memory.dmp

                        memory/6060-100-0x00000000077F0000-0x0000000007807000-memory.dmp