Analysis

  • max time kernel
    118s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    29/11/2023, 16:41

General

  • Target

    e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5exe.exe

  • Size

    654KB

  • MD5

    d0cc28fddecca60c208ae56d78014e95

  • SHA1

    34069e3897de6509b630f9b65b067ae9a74baffc

  • SHA256

    e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5

  • SHA512

    68626b0f448af738fdc41b4c8f71adb956d6ea29e5cd843ad71902b59f6beee88b42805ee50387749b05f2a019f56f45b2efa443883c6d7afd9edcc66d518d80

  • SSDEEP

    12288:wEg7SnvSNDeJDeR9p36kn3nqoMyOw3ZguCvvUH4qtQJ3aPjSEIOLusQmbCpi3U:wEg+vODyDIX36k3uA3Z3Cny4qt8aP2Ey

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

rn72836.sytes.net:6696

127.0.0.1:6696

Mutex

3f30b298-001f-4f08-b22c-606b0d3632bd

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2023-09-08T19:00:17.997607436Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    6696

  • default_group

    rn728

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    3f30b298-001f-4f08-b22c-606b0d3632bd

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    rn72836.sytes.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • NanoCore

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5exe.exe
    "C:\Users\Admin\AppData\Local\Temp\e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5exe.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1408
    • C:\Users\Admin\AppData\Local\Temp\e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5exe.exe
      "C:\Users\Admin\AppData\Local\Temp\e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5exe.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1336
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE59E.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2868
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE744.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2756

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmpE59E.tmp

          Filesize

          1KB

          MD5

          875dc87e150d02c32fff4a9b93e2c597

          SHA1

          5fcabd949c2819d092fc8ebccb9f5ccd643cc414

          SHA256

          aba11d13c09cfc9704e52c7d9704a4eca16276e26f172d3853b78fc3c525e09a

          SHA512

          5780dbd6401991302f6b45e5b3ed9f929b3b6a4d93b0dd95f0800fee9a55912b942bb08929c3605f0fe9bb285a43719f7d4893344ad3999ce71683a4878d3b2f

        • C:\Users\Admin\AppData\Local\Temp\tmpE744.tmp

          Filesize

          1KB

          MD5

          5fea24e883e06e4df6d240dc72abf2c5

          SHA1

          d778bf0f436141e02df4b421e8188abdcc9a84a4

          SHA256

          e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66

          SHA512

          15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924

        • memory/1336-11-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1336-41-0x0000000000D70000-0x0000000000D7E000-memory.dmp

          Filesize

          56KB

        • memory/1336-51-0x0000000004DF0000-0x0000000004E30000-memory.dmp

          Filesize

          256KB

        • memory/1336-50-0x0000000074860000-0x0000000074F4E000-memory.dmp

          Filesize

          6.9MB

        • memory/1336-48-0x0000000004880000-0x0000000004894000-memory.dmp

          Filesize

          80KB

        • memory/1336-7-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1336-9-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1336-47-0x0000000004FD0000-0x0000000004FFE000-memory.dmp

          Filesize

          184KB

        • memory/1336-13-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1336-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1336-17-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1336-19-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1336-46-0x0000000004860000-0x000000000486E000-memory.dmp

          Filesize

          56KB

        • memory/1336-22-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1336-23-0x0000000074860000-0x0000000074F4E000-memory.dmp

          Filesize

          6.9MB

        • memory/1336-24-0x0000000004DF0000-0x0000000004E30000-memory.dmp

          Filesize

          256KB

        • memory/1336-45-0x0000000004850000-0x0000000004864000-memory.dmp

          Filesize

          80KB

        • memory/1336-44-0x00000000010C0000-0x00000000010D0000-memory.dmp

          Filesize

          64KB

        • memory/1336-32-0x0000000000610000-0x000000000061A000-memory.dmp

          Filesize

          40KB

        • memory/1336-33-0x0000000000700000-0x000000000071E000-memory.dmp

          Filesize

          120KB

        • memory/1336-34-0x0000000000620000-0x000000000062A000-memory.dmp

          Filesize

          40KB

        • memory/1336-37-0x0000000000770000-0x0000000000782000-memory.dmp

          Filesize

          72KB

        • memory/1336-38-0x0000000000D20000-0x0000000000D3A000-memory.dmp

          Filesize

          104KB

        • memory/1336-39-0x0000000000D40000-0x0000000000D4E000-memory.dmp

          Filesize

          56KB

        • memory/1336-40-0x0000000000D60000-0x0000000000D72000-memory.dmp

          Filesize

          72KB

        • memory/1336-43-0x00000000010B0000-0x00000000010C4000-memory.dmp

          Filesize

          80KB

        • memory/1336-42-0x0000000000DC0000-0x0000000000DCC000-memory.dmp

          Filesize

          48KB

        • memory/1408-2-0x0000000004A00000-0x0000000004A40000-memory.dmp

          Filesize

          256KB

        • memory/1408-1-0x00000000748E0000-0x0000000074FCE000-memory.dmp

          Filesize

          6.9MB

        • memory/1408-3-0x0000000000550000-0x000000000056A000-memory.dmp

          Filesize

          104KB

        • memory/1408-21-0x00000000748E0000-0x0000000074FCE000-memory.dmp

          Filesize

          6.9MB

        • memory/1408-0-0x00000000010D0000-0x000000000117A000-memory.dmp

          Filesize

          680KB

        • memory/1408-6-0x00000000052C0000-0x0000000005332000-memory.dmp

          Filesize

          456KB

        • memory/1408-5-0x0000000000590000-0x000000000059A000-memory.dmp

          Filesize

          40KB

        • memory/1408-4-0x0000000000570000-0x0000000000578000-memory.dmp

          Filesize

          32KB