Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-12-2024 00:54

General

  • Target

    8c8ff970b9534520171f97dba6bf582e2b1a33110bdae24412d322295ba5a28b.exe

  • Size

    558KB

  • MD5

    0853af43062bc1ebc6e577dcc06d698c

  • SHA1

    0ae55f26e328d7ae27b334d9e232fba337a7e06a

  • SHA256

    8c8ff970b9534520171f97dba6bf582e2b1a33110bdae24412d322295ba5a28b

  • SHA512

    f8f234f2fb189e7fe5dbebc08b23c1476d261a3c998459f436a4e69712a0c87b0bc442275cdd8359fec27c56e358336c0ef51bc1c6049eb64d11dbcf7941b90b

  • SSDEEP

    12288:RK777777777777N7vPLjIb2b6Gb9k/Yurwua412+J+Oz11Q6Gdu:RK777777777777lvzcb06QAY5uBL1Qc

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

23.105.131.228:1604

Mutex

2fc0dda4-46bf-46a1-9071-1400f4c43df4

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-09-21T09:35:25.099061636Z

  • 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

    1604

  • default_group

    CEOs

  • 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

    2fc0dda4-46bf-46a1-9071-1400f4c43df4

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    23.105.131.228

  • 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.

  • Nanocore 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 7 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 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8c8ff970b9534520171f97dba6bf582e2b1a33110bdae24412d322295ba5a28b.exe
    "C:\Users\Admin\AppData\Local\Temp\8c8ff970b9534520171f97dba6bf582e2b1a33110bdae24412d322295ba5a28b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1188
    • 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\8c8ff970b9534520171f97dba6bf582e2b1a33110bdae24412d322295ba5a28b.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4836
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\umSJYhnmkJ.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3824
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\umSJYhnmkJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp23EE.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1432
    • C:\Users\Admin\AppData\Local\Temp\8c8ff970b9534520171f97dba6bf582e2b1a33110bdae24412d322295ba5a28b.exe
      "C:\Users\Admin\AppData\Local\Temp\8c8ff970b9534520171f97dba6bf582e2b1a33110bdae24412d322295ba5a28b.exe"
      2⤵
        PID:5116
      • C:\Users\Admin\AppData\Local\Temp\8c8ff970b9534520171f97dba6bf582e2b1a33110bdae24412d322295ba5a28b.exe
        "C:\Users\Admin\AppData\Local\Temp\8c8ff970b9534520171f97dba6bf582e2b1a33110bdae24412d322295ba5a28b.exe"
        2⤵
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3604
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DHCP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp28B1.tmp"
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2756
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DHCP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2A87.tmp"
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:4668

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      18KB

      MD5

      8388ce9c83ac3c9390d4393d1b5986eb

      SHA1

      a3d42202c75b3f863b6a0c9f775431d0ea73a0ec

      SHA256

      b06fe4edc772e13aa5210f01c775d514fc95d7ea9402a5bd13da3aed125ad813

      SHA512

      6540389d151cb1626cbd924f24e767ff6415c7c76d69e4b6ca1590e698f93ab591702feb20ac8399cea51ec5bf5e19e3483dc20b02daf27874855829c38c8436

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_quqf4jid.uvj.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp23EE.tmp

      Filesize

      1KB

      MD5

      bfcc6920f7638cb20a65f33557639840

      SHA1

      3f8b9a50d1c104b9da8b3d63ec278e24b0b4ec9a

      SHA256

      407109a75cf406505614909e779f2c1a9559b5fc651286cde4b398c90660f38a

      SHA512

      bb4b481d42cea459abd89c638f690a45c898d3b39c8ecc020d665d4b52af4be04919ed8c437b0bf83536619e6cb78b9ef863e8252786baec926586366d75f8ba

    • C:\Users\Admin\AppData\Local\Temp\tmp28B1.tmp

      Filesize

      1KB

      MD5

      c9601783911a342b4ac5a0206963e75e

      SHA1

      c1727d06249987059b9f473494f35ee1a79a8e3c

      SHA256

      2699ad4a71e0bf2b040a223f34f82c75d9a70f6ac293724c763ffa7042e74cc6

      SHA512

      c6b00de6a1c4a736db20005d7d7bc9f4095a627a05dd980a432ee2adc46d469d376a6c35ea1ecfbe2f4b59a4d5eac0a3450716f0d63418bb1e0c9f6d4350ebd7

    • C:\Users\Admin\AppData\Local\Temp\tmp2A87.tmp

      Filesize

      1KB

      MD5

      0479d5f304ef2d7e3c15fb24a99f88c1

      SHA1

      8edbb1450a656fac5f5e96779ffe440ee8c1aec9

      SHA256

      112557c2b2d0c669a3b115129dc32f005341e965330fa8f2ad3e5de1926594bc

      SHA512

      537e8d87e5cd975f0e69bb145f81d6e9d7b0d82eed143ac351304ea38577137386a51fdb7357ec6d641eb04ff5f51e249bba2db8a4b5bf2934d561394a4a3f15

    • memory/1188-7-0x00000000058B0000-0x00000000058BE000-memory.dmp

      Filesize

      56KB

    • memory/1188-1-0x00000000009E0000-0x0000000000A72000-memory.dmp

      Filesize

      584KB

    • memory/1188-8-0x0000000006850000-0x000000000689C000-memory.dmp

      Filesize

      304KB

    • memory/1188-9-0x0000000074BEE000-0x0000000074BEF000-memory.dmp

      Filesize

      4KB

    • memory/1188-10-0x0000000074BE0000-0x0000000075390000-memory.dmp

      Filesize

      7.7MB

    • memory/1188-11-0x0000000007FB0000-0x000000000801C000-memory.dmp

      Filesize

      432KB

    • memory/1188-0-0x0000000074BEE000-0x0000000074BEF000-memory.dmp

      Filesize

      4KB

    • memory/1188-6-0x0000000005730000-0x00000000057CC000-memory.dmp

      Filesize

      624KB

    • memory/1188-5-0x0000000005620000-0x000000000562A000-memory.dmp

      Filesize

      40KB

    • memory/1188-3-0x0000000005460000-0x00000000054F2000-memory.dmp

      Filesize

      584KB

    • memory/1188-4-0x0000000074BE0000-0x0000000075390000-memory.dmp

      Filesize

      7.7MB

    • memory/1188-29-0x0000000074BE0000-0x0000000075390000-memory.dmp

      Filesize

      7.7MB

    • memory/1188-2-0x0000000005AE0000-0x0000000006084000-memory.dmp

      Filesize

      5.6MB

    • memory/3604-58-0x00000000059C0000-0x00000000059DE000-memory.dmp

      Filesize

      120KB

    • memory/3604-26-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/3604-59-0x0000000005BC0000-0x0000000005BCA000-memory.dmp

      Filesize

      40KB

    • memory/3604-57-0x00000000059B0000-0x00000000059BA000-memory.dmp

      Filesize

      40KB

    • memory/3824-21-0x0000000074BE0000-0x0000000075390000-memory.dmp

      Filesize

      7.7MB

    • memory/3824-71-0x0000000075460000-0x00000000754AC000-memory.dmp

      Filesize

      304KB

    • memory/3824-86-0x0000000007240000-0x00000000072D6000-memory.dmp

      Filesize

      600KB

    • memory/3824-87-0x00000000071C0000-0x00000000071D1000-memory.dmp

      Filesize

      68KB

    • memory/3824-91-0x00000000072E0000-0x00000000072E8000-memory.dmp

      Filesize

      32KB

    • memory/3824-22-0x0000000004BD0000-0x0000000004BF2000-memory.dmp

      Filesize

      136KB

    • memory/3824-97-0x0000000074BE0000-0x0000000075390000-memory.dmp

      Filesize

      7.7MB

    • memory/4836-16-0x00000000052C0000-0x00000000052F6000-memory.dmp

      Filesize

      216KB

    • memory/4836-49-0x0000000006840000-0x000000000685E000-memory.dmp

      Filesize

      120KB

    • memory/4836-52-0x0000000006DA0000-0x0000000006DEC000-memory.dmp

      Filesize

      304KB

    • memory/4836-23-0x0000000006010000-0x0000000006076000-memory.dmp

      Filesize

      408KB

    • memory/4836-82-0x0000000007A40000-0x0000000007AE3000-memory.dmp

      Filesize

      652KB

    • memory/4836-81-0x0000000006E20000-0x0000000006E3E000-memory.dmp

      Filesize

      120KB

    • memory/4836-61-0x0000000075460000-0x00000000754AC000-memory.dmp

      Filesize

      304KB

    • memory/4836-60-0x0000000007800000-0x0000000007832000-memory.dmp

      Filesize

      200KB

    • memory/4836-84-0x0000000007B80000-0x0000000007B9A000-memory.dmp

      Filesize

      104KB

    • memory/4836-83-0x00000000081D0000-0x000000000884A000-memory.dmp

      Filesize

      6.5MB

    • memory/4836-85-0x0000000007C00000-0x0000000007C0A000-memory.dmp

      Filesize

      40KB

    • memory/4836-27-0x00000000062A0000-0x00000000065F4000-memory.dmp

      Filesize

      3.3MB

    • memory/4836-25-0x0000000074BE0000-0x0000000075390000-memory.dmp

      Filesize

      7.7MB

    • memory/4836-88-0x0000000007DB0000-0x0000000007DBE000-memory.dmp

      Filesize

      56KB

    • memory/4836-89-0x0000000007DC0000-0x0000000007DD4000-memory.dmp

      Filesize

      80KB

    • memory/4836-90-0x0000000007EC0000-0x0000000007EDA000-memory.dmp

      Filesize

      104KB

    • memory/4836-24-0x0000000006130000-0x0000000006196000-memory.dmp

      Filesize

      408KB

    • memory/4836-19-0x0000000005930000-0x0000000005F58000-memory.dmp

      Filesize

      6.2MB

    • memory/4836-18-0x0000000074BE0000-0x0000000075390000-memory.dmp

      Filesize

      7.7MB

    • memory/4836-98-0x0000000074BE0000-0x0000000075390000-memory.dmp

      Filesize

      7.7MB

    • memory/4836-17-0x0000000074BE0000-0x0000000075390000-memory.dmp

      Filesize

      7.7MB