Analysis

  • max time kernel
    120s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-08-2022 07:33

General

  • Target

    SecuriteInfo.com.W32.AIDetectNet.01.13157.25336.exe

  • Size

    701KB

  • MD5

    5418fdab1124ad54c35c748aebd79dc6

  • SHA1

    fc0ed4e303b0f3fc209663d984de15d862b43357

  • SHA256

    6c29578e601488f2515975c4d31bd6a5042da0578d9eef2db6801bffba10cf23

  • SHA512

    8c39bf4c391e2cb9f464c416a59afe343a1b518b5df6a8cd4ece7dfdabd66f773bc6aa793d9df29466087bcc9b64a2646f70b25c2dafd1247f2fe87205e54d33

  • SSDEEP

    12288:/g0F75ep2z1cQwU3jyWbhylceQQXJGgSOI0pnIbAdH2I9wRPr6Ka8ARs:/rZ5ys173pbYyeQQXJGgSWp/Wk4mKkR

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

brewsterchristophe.ddns.net:5899

194,147,5,75:5899

Mutex

b8aebc29-8c64-444f-99e6-dc4122e9bbfc

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    194,147,5,75

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-04-29T03:26:40.572298236Z

  • 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

    5899

  • default_group

    Default

  • 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

    b8aebc29-8c64-444f-99e6-dc4122e9bbfc

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    brewsterchristophe.ddns.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
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.13157.25336.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.13157.25336.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1764
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\oINWpZjknmi.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1560
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oINWpZjknmi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp61A1.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1444
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.13157.25336.exe
      "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.13157.25336.exe"
      2⤵
        PID:1980
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.13157.25336.exe
        "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.13157.25336.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:1700
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "UDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7456.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:692
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "UDP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp75AE.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:1712

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp61A1.tmp

      Filesize

      1KB

      MD5

      29da80a81ab444790633d886751a4796

      SHA1

      48bc59462a759117baac997daf31df0d943779d7

      SHA256

      0196880ff4c3d411a6d2cbd5adc3930ac4b3a3b02bfe120961167606eb203f0c

      SHA512

      64c0c9ad2479ac25a47240edb0ca437102b34bbdeec6439c982cb1022cc92762cf51adeb776c1bed48e71bb06c9824efafa8217f779254bed62080d96e3f3ce7

    • C:\Users\Admin\AppData\Local\Temp\tmp7456.tmp

      Filesize

      1KB

      MD5

      3e117bbe8d7a6e76cba1f9df06f835d9

      SHA1

      c9440a1076ed79e2951aa7fb71ed0f98d903ad25

      SHA256

      c3a631385e328b71b80a47b3f92b470b3d41c0a14d04ea2a7890ac5f7bf61cdb

      SHA512

      2397ffef08fb14233ac2d7fc74ddbfee09055ef1940f7e461667edb88780027f492e7e01caea85e3e8e2fd04a52819ef75d9286f68e28dbfadb8a4e00d3dcff1

    • C:\Users\Admin\AppData\Local\Temp\tmp75AE.tmp

      Filesize

      1KB

      MD5

      0a24db62cb5b84309c4803346caaa25d

      SHA1

      67660778f61bb44168c33ed3fe56ed86cf9583e8

      SHA256

      38d38647af394a04ee6add9f05c43244f04e64a6b96257f4b241a5038efa82df

      SHA512

      d25d9df063f44595d5e0bf890755bd387655131ff369eeedf3d11ffcc6202ca4455bbb33a8a926dd06839cbd1ddec3d06809b3c66a82c6518aa14beaa469a548

    • memory/692-77-0x0000000000000000-mapping.dmp

    • memory/1444-61-0x0000000000000000-mapping.dmp

    • memory/1560-98-0x000000006F6F0000-0x000000006FC9B000-memory.dmp

      Filesize

      5.7MB

    • memory/1560-97-0x000000006F6F0000-0x000000006FC9B000-memory.dmp

      Filesize

      5.7MB

    • memory/1560-81-0x000000006F6F0000-0x000000006FC9B000-memory.dmp

      Filesize

      5.7MB

    • memory/1560-59-0x0000000000000000-mapping.dmp

    • memory/1700-64-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1700-91-0x00000000046F0000-0x0000000004704000-memory.dmp

      Filesize

      80KB

    • memory/1700-65-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1700-68-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1700-71-0x000000000041E792-mapping.dmp

    • memory/1700-70-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1700-73-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1700-75-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1700-96-0x0000000004BA0000-0x0000000004BB4000-memory.dmp

      Filesize

      80KB

    • memory/1700-95-0x0000000004ED0000-0x0000000004EFE000-memory.dmp

      Filesize

      184KB

    • memory/1700-94-0x0000000004B40000-0x0000000004B4E000-memory.dmp

      Filesize

      56KB

    • memory/1700-93-0x0000000004750000-0x0000000004764000-memory.dmp

      Filesize

      80KB

    • memory/1700-92-0x0000000004740000-0x0000000004750000-memory.dmp

      Filesize

      64KB

    • memory/1700-82-0x0000000000830000-0x000000000083A000-memory.dmp

      Filesize

      40KB

    • memory/1700-83-0x0000000000840000-0x000000000085E000-memory.dmp

      Filesize

      120KB

    • memory/1700-84-0x00000000020B0000-0x00000000020BA000-memory.dmp

      Filesize

      40KB

    • memory/1700-85-0x00000000020E0000-0x00000000020F2000-memory.dmp

      Filesize

      72KB

    • memory/1700-86-0x00000000041B0000-0x00000000041CA000-memory.dmp

      Filesize

      104KB

    • memory/1700-87-0x00000000041E0000-0x00000000041EE000-memory.dmp

      Filesize

      56KB

    • memory/1700-90-0x0000000004630000-0x000000000463E000-memory.dmp

      Filesize

      56KB

    • memory/1700-89-0x0000000004620000-0x000000000462C000-memory.dmp

      Filesize

      48KB

    • memory/1700-88-0x0000000004240000-0x0000000004252000-memory.dmp

      Filesize

      72KB

    • memory/1700-67-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1712-79-0x0000000000000000-mapping.dmp

    • memory/1764-57-0x00000000005D0000-0x00000000005DC000-memory.dmp

      Filesize

      48KB

    • memory/1764-58-0x0000000005950000-0x00000000059EA000-memory.dmp

      Filesize

      616KB

    • memory/1764-63-0x00000000059F0000-0x0000000005A30000-memory.dmp

      Filesize

      256KB

    • memory/1764-54-0x00000000000C0000-0x0000000000176000-memory.dmp

      Filesize

      728KB

    • memory/1764-56-0x0000000000570000-0x0000000000588000-memory.dmp

      Filesize

      96KB

    • memory/1764-55-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

      Filesize

      8KB