Analysis

  • max time kernel
    139s
  • max time network
    154s
  • 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 00:44

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 9 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 23 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:2772
    • 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:3308
    • 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:5008
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\umSJYhnmkJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp19EC.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4728
    • 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:2012
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1F99.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:5084
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp214F.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1092

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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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

    77520e4a1dd4168554137c5b382db6c5

    SHA1

    60396a04bdbd60d8bc1a792c65c407b8d1bc085e

    SHA256

    626af490be1e3c5287b8cd20412264c2a0d8de818d62c1497f16d6acd71cce52

    SHA512

    027b755f9f9f1b80af84611d17eb23ff3c7dd75691468a75b1f937af8dbe1787f349c1d9084fbc13335be2fe6bd303cf4d2443bc3aafbfda8a9fff37a30cfa8f

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hrboelov.t4x.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp19EC.tmp

    Filesize

    1KB

    MD5

    bfcc6920f7638cb20a65f33557639840

    SHA1

    3f8b9a50d1c104b9da8b3d63ec278e24b0b4ec9a

    SHA256

    407109a75cf406505614909e779f2c1a9559b5fc651286cde4b398c90660f38a

    SHA512

    bb4b481d42cea459abd89c638f690a45c898d3b39c8ecc020d665d4b52af4be04919ed8c437b0bf83536619e6cb78b9ef863e8252786baec926586366d75f8ba

  • C:\Users\Admin\AppData\Local\Temp\tmp1F99.tmp

    Filesize

    1KB

    MD5

    c9601783911a342b4ac5a0206963e75e

    SHA1

    c1727d06249987059b9f473494f35ee1a79a8e3c

    SHA256

    2699ad4a71e0bf2b040a223f34f82c75d9a70f6ac293724c763ffa7042e74cc6

    SHA512

    c6b00de6a1c4a736db20005d7d7bc9f4095a627a05dd980a432ee2adc46d469d376a6c35ea1ecfbe2f4b59a4d5eac0a3450716f0d63418bb1e0c9f6d4350ebd7

  • C:\Users\Admin\AppData\Local\Temp\tmp214F.tmp

    Filesize

    1KB

    MD5

    0479d5f304ef2d7e3c15fb24a99f88c1

    SHA1

    8edbb1450a656fac5f5e96779ffe440ee8c1aec9

    SHA256

    112557c2b2d0c669a3b115129dc32f005341e965330fa8f2ad3e5de1926594bc

    SHA512

    537e8d87e5cd975f0e69bb145f81d6e9d7b0d82eed143ac351304ea38577137386a51fdb7357ec6d641eb04ff5f51e249bba2db8a4b5bf2934d561394a4a3f15

  • memory/2012-60-0x0000000006230000-0x000000000624E000-memory.dmp

    Filesize

    120KB

  • memory/2012-33-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2012-61-0x0000000006270000-0x000000000627A000-memory.dmp

    Filesize

    40KB

  • memory/2012-59-0x0000000005680000-0x000000000568A000-memory.dmp

    Filesize

    40KB

  • memory/2772-5-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/2772-11-0x0000000008150000-0x00000000081BC000-memory.dmp

    Filesize

    432KB

  • memory/2772-10-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/2772-0-0x000000007444E000-0x000000007444F000-memory.dmp

    Filesize

    4KB

  • memory/2772-9-0x000000007444E000-0x000000007444F000-memory.dmp

    Filesize

    4KB

  • memory/2772-7-0x0000000005A00000-0x0000000005A0E000-memory.dmp

    Filesize

    56KB

  • memory/2772-8-0x0000000006910000-0x000000000695C000-memory.dmp

    Filesize

    304KB

  • memory/2772-6-0x00000000058C0000-0x000000000595C000-memory.dmp

    Filesize

    624KB

  • memory/2772-4-0x0000000005630000-0x000000000563A000-memory.dmp

    Filesize

    40KB

  • memory/2772-3-0x0000000005650000-0x00000000056E2000-memory.dmp

    Filesize

    584KB

  • memory/2772-2-0x0000000005B60000-0x0000000006104000-memory.dmp

    Filesize

    5.6MB

  • memory/2772-49-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/2772-1-0x0000000000B80000-0x0000000000C12000-memory.dmp

    Filesize

    584KB

  • memory/3308-17-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3308-90-0x00000000077B0000-0x00000000077BE000-memory.dmp

    Filesize

    56KB

  • memory/3308-26-0x0000000005B90000-0x0000000005EE4000-memory.dmp

    Filesize

    3.3MB

  • memory/3308-27-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3308-99-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3308-16-0x0000000002930000-0x0000000002966000-memory.dmp

    Filesize

    216KB

  • memory/3308-18-0x0000000005460000-0x0000000005A88000-memory.dmp

    Filesize

    6.2MB

  • memory/3308-91-0x00000000077C0000-0x00000000077D4000-memory.dmp

    Filesize

    80KB

  • memory/3308-22-0x0000000005180000-0x00000000051A2000-memory.dmp

    Filesize

    136KB

  • memory/3308-23-0x0000000005220000-0x0000000005286000-memory.dmp

    Filesize

    408KB

  • memory/3308-24-0x0000000005290000-0x00000000052F6000-memory.dmp

    Filesize

    408KB

  • memory/3308-19-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3308-78-0x0000000070C30000-0x0000000070C7C000-memory.dmp

    Filesize

    304KB

  • memory/5008-89-0x00000000077B0000-0x00000000077C1000-memory.dmp

    Filesize

    68KB

  • memory/5008-75-0x0000000007C00000-0x000000000827A000-memory.dmp

    Filesize

    6.5MB

  • memory/5008-74-0x0000000007460000-0x0000000007503000-memory.dmp

    Filesize

    652KB

  • memory/5008-76-0x00000000075B0000-0x00000000075CA000-memory.dmp

    Filesize

    104KB

  • memory/5008-46-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/5008-77-0x0000000007630000-0x000000000763A000-memory.dmp

    Filesize

    40KB

  • memory/5008-73-0x00000000071F0000-0x000000000720E000-memory.dmp

    Filesize

    120KB

  • memory/5008-21-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/5008-62-0x0000000007210000-0x0000000007242000-memory.dmp

    Filesize

    200KB

  • memory/5008-63-0x0000000070C30000-0x0000000070C7C000-memory.dmp

    Filesize

    304KB

  • memory/5008-88-0x0000000007830000-0x00000000078C6000-memory.dmp

    Filesize

    600KB

  • memory/5008-92-0x00000000078F0000-0x000000000790A000-memory.dmp

    Filesize

    104KB

  • memory/5008-93-0x00000000078D0000-0x00000000078D8000-memory.dmp

    Filesize

    32KB

  • memory/5008-50-0x0000000006290000-0x00000000062AE000-memory.dmp

    Filesize

    120KB

  • memory/5008-51-0x00000000064B0000-0x00000000064FC000-memory.dmp

    Filesize

    304KB

  • memory/5008-100-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/5008-25-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB