Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-05-2024 09:22

General

  • Target

    62ce4e89f91a70f82f5a61bf76c4ab592982f761eef609bd7ea7b196f9415e83.exe

  • Size

    697KB

  • MD5

    c4c93bc9f72bed159b6b2eba554d9ff9

  • SHA1

    5064d1765a61f37b166eccea7747d27e41332c67

  • SHA256

    62ce4e89f91a70f82f5a61bf76c4ab592982f761eef609bd7ea7b196f9415e83

  • SHA512

    d313f7791c09e47a832d0934a5e8875f580ac05c0d30f90263c4fa7dc6119cc6e34bdd328d2d1761f2fb82b318ebbacd64b656a5082724b4e181edc04290f409

  • SSDEEP

    12288:Fi0pei36RcXKEl4qS5e99HNkaMAU7Bv7zB8tbcCt4pJ:FFpp36+6EWRerNTnU7BT2lco4

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

december2n.duckdns.org:65140

december2nd.ddns.net:65140

Mutex

899d14c1-6714-492c-b745-3165bff717a5

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    december2nd.ddns.net

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2024-02-27T02:16:51.671967236Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    65140

  • default_group

    NO GREE

  • 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

    899d14c1-6714-492c-b745-3165bff717a5

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    december2n.duckdns.org

  • primary_dns_server

  • 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.

  • 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
  • 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).

  • 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 14 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\62ce4e89f91a70f82f5a61bf76c4ab592982f761eef609bd7ea7b196f9415e83.exe
    "C:\Users\Admin\AppData\Local\Temp\62ce4e89f91a70f82f5a61bf76c4ab592982f761eef609bd7ea7b196f9415e83.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4480
    • 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\62ce4e89f91a70f82f5a61bf76c4ab592982f761eef609bd7ea7b196f9415e83.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4464
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\aJDyPjUKcXvqr.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5056
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aJDyPjUKcXvqr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB779.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3352
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2128
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "LAN Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBAF3.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2952
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "LAN Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBC8A.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2592

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    18KB

    MD5

    1a5ff9597c4836920f8212b2fc8271b8

    SHA1

    6d72a9f5d6f32192a366d5effffc8f4aad70b7f1

    SHA256

    259beb6e2769ca0787e3264a3810cdaa70f1fab1f8090ba1191d20b950450bc5

    SHA512

    f2ad65b45b74ef8b8ba19d4b2576c320d472ff750fe7721b571dd49489ebf888a8613981d398fcb281a79183c2fe270e9bc38ff64afcdd9f07cd01fa73886a14

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m4lcyr41.jww.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpB779.tmp
    Filesize

    1KB

    MD5

    77580ac48611ba539feacf7422dec739

    SHA1

    6e4c803311421bb945580b0a449e58dbafa5a1c5

    SHA256

    72a501e00367894577e7a389cf03c2e658d76d2126d64570cf8aefa0662abb23

    SHA512

    b9c657d8aa9d0a936f0d31757fb248bd66b6d3bd68dc6a4719fbf8295f7ec0f99f2093317bf4e612da07684557aafa8069fc94e725e172864821ab2ce000a836

  • C:\Users\Admin\AppData\Local\Temp\tmpBAF3.tmp
    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmpBC8A.tmp
    Filesize

    1KB

    MD5

    ecf141ec69adbb2a5c3dd5c85cd0ec39

    SHA1

    0ad224632fa58d103142c05c44a142f3d7208291

    SHA256

    64d8cfa0b25afee269839cd5fc0b66e5643bc318e5f4d3ce1b9dba2456c83316

    SHA512

    4821b062d6672f3ed07833cfd7ab9abb533850b451b632d781fbfad8238fcd5ac52855f1f239547ae2d1c1477959f022430302a75cfd3c19a8473af72a1ef201

  • memory/2128-55-0x00000000058B0000-0x00000000058BC000-memory.dmp
    Filesize

    48KB

  • memory/2128-56-0x00000000059E0000-0x00000000059FE000-memory.dmp
    Filesize

    120KB

  • memory/2128-57-0x0000000005A80000-0x0000000005A8A000-memory.dmp
    Filesize

    40KB

  • memory/2128-54-0x00000000058A0000-0x00000000058AA000-memory.dmp
    Filesize

    40KB

  • memory/2128-24-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/4464-46-0x0000000006250000-0x000000000629C000-memory.dmp
    Filesize

    304KB

  • memory/4464-70-0x00000000751E0000-0x000000007522C000-memory.dmp
    Filesize

    304KB

  • memory/4464-16-0x00007FFB340B0000-0x00007FFB342A5000-memory.dmp
    Filesize

    2.0MB

  • memory/4464-94-0x00007FFB340B0000-0x00007FFB342A5000-memory.dmp
    Filesize

    2.0MB

  • memory/4464-18-0x0000000005320000-0x0000000005948000-memory.dmp
    Filesize

    6.2MB

  • memory/4464-88-0x00000000078B0000-0x00000000078CA000-memory.dmp
    Filesize

    104KB

  • memory/4464-21-0x0000000005280000-0x00000000052A2000-memory.dmp
    Filesize

    136KB

  • memory/4464-23-0x0000000005BF0000-0x0000000005C56000-memory.dmp
    Filesize

    408KB

  • memory/4464-22-0x0000000005A50000-0x0000000005AB6000-memory.dmp
    Filesize

    408KB

  • memory/4464-87-0x00000000077B0000-0x00000000077C4000-memory.dmp
    Filesize

    80KB

  • memory/4464-15-0x0000000004C70000-0x0000000004CA6000-memory.dmp
    Filesize

    216KB

  • memory/4464-30-0x0000000005C60000-0x0000000005FB4000-memory.dmp
    Filesize

    3.3MB

  • memory/4464-85-0x0000000007770000-0x0000000007781000-memory.dmp
    Filesize

    68KB

  • memory/4464-45-0x0000000006230000-0x000000000624E000-memory.dmp
    Filesize

    120KB

  • memory/4464-84-0x00000000077F0000-0x0000000007886000-memory.dmp
    Filesize

    600KB

  • memory/4464-83-0x00000000075E0000-0x00000000075EA000-memory.dmp
    Filesize

    40KB

  • memory/4480-9-0x000000000D2C0000-0x000000000D33C000-memory.dmp
    Filesize

    496KB

  • memory/4480-7-0x00000000058E0000-0x00000000058EC000-memory.dmp
    Filesize

    48KB

  • memory/4480-4-0x00007FFB340B0000-0x00007FFB342A5000-memory.dmp
    Filesize

    2.0MB

  • memory/4480-3-0x0000000005340000-0x00000000053D2000-memory.dmp
    Filesize

    584KB

  • memory/4480-2-0x00000000058F0000-0x0000000005E94000-memory.dmp
    Filesize

    5.6MB

  • memory/4480-17-0x00007FFB340B0000-0x00007FFB342A5000-memory.dmp
    Filesize

    2.0MB

  • memory/4480-1-0x00000000007E0000-0x0000000000894000-memory.dmp
    Filesize

    720KB

  • memory/4480-10-0x0000000010AA0000-0x0000000010B3C000-memory.dmp
    Filesize

    624KB

  • memory/4480-8-0x0000000002C60000-0x0000000002C70000-memory.dmp
    Filesize

    64KB

  • memory/4480-6-0x00000000058C0000-0x00000000058E2000-memory.dmp
    Filesize

    136KB

  • memory/4480-0-0x00007FFB340B0000-0x00007FFB342A5000-memory.dmp
    Filesize

    2.0MB

  • memory/4480-5-0x0000000005290000-0x000000000529A000-memory.dmp
    Filesize

    40KB

  • memory/5056-82-0x0000000007830000-0x000000000784A000-memory.dmp
    Filesize

    104KB

  • memory/5056-81-0x0000000007E70000-0x00000000084EA000-memory.dmp
    Filesize

    6.5MB

  • memory/5056-71-0x0000000007700000-0x00000000077A3000-memory.dmp
    Filesize

    652KB

  • memory/5056-86-0x0000000007A60000-0x0000000007A6E000-memory.dmp
    Filesize

    56KB

  • memory/5056-20-0x00007FFB340B0000-0x00007FFB342A5000-memory.dmp
    Filesize

    2.0MB

  • memory/5056-69-0x00000000076E0000-0x00000000076FE000-memory.dmp
    Filesize

    120KB

  • memory/5056-89-0x0000000007B50000-0x0000000007B58000-memory.dmp
    Filesize

    32KB

  • memory/5056-58-0x0000000007480000-0x00000000074B2000-memory.dmp
    Filesize

    200KB

  • memory/5056-59-0x00000000751E0000-0x000000007522C000-memory.dmp
    Filesize

    304KB

  • memory/5056-95-0x00007FFB340B0000-0x00007FFB342A5000-memory.dmp
    Filesize

    2.0MB