Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-05-2024 08:30

General

  • Target

    ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe

  • Size

    945KB

  • MD5

    a1f6c95a377a8c4c194a018614a6b463

  • SHA1

    cd8ce511a2ac57aec39892c0b27832a18e77fc39

  • SHA256

    ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c

  • SHA512

    fb93341612485022964338a421fbf6a77876d1efc492307e18a4fa28354643f8675cf685847ee8ffc9315232449f1c6b8aab674bb2beb0dc5e14ca6e020510a5

  • SSDEEP

    12288:gI0MYBl4BwkivLUyyqexCwG879IO0MgsaQ/nsy9LHr24HwmU3V50:50MYfMweyTivP7yO7aQ/nsWRQJV5

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

december2nd.ddns.net:65024

december2n.duckdns.org:65024

Mutex

2c009a56-c28c-48f4-8875-acf9e1222e9f

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    december2n.duckdns.org

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2024-02-17T09:12:36.211032636Z

  • 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

    65024

  • 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

    2c009a56-c28c-48f4-8875-acf9e1222e9f

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    december2nd.ddns.net

  • 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 16 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\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe
    "C:\Users\Admin\AppData\Local\Temp\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2624
    • 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\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4132
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fupTmRCVq.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1524
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp924D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4896
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:4396
      • 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:3680
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DHCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9606.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:220
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DHCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp979D.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:3912

    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\CLR_v4.0_32\UsageLogs\powershell.exe.log
      Filesize

      2KB

      MD5

      3d086a433708053f9bf9523e1d87a4e8

      SHA1

      b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

      SHA256

      6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

      SHA512

      931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

      18KB

      MD5

      d713617d76fccfbd51897ffd3ef285fd

      SHA1

      bd7b373a319ab41f6ab562249aaf889dbe28c9d3

      SHA256

      3bcdda0ba6e8ee3b33a4dc0c8cb5ff62fea77fb5e1f93542597237c8e1a274ed

      SHA512

      32da5db98aa739a6d1745fa17a3b91d7b6c57d20948f652f3136eac9ee62521e4c9d6567b1c9a0e3efbebd85037fe34efa315c8499fbd915b14248f41c76b6bc

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fms10gkt.wfs.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp924D.tmp
      Filesize

      1KB

      MD5

      af4404b2f40347b8dc341fc4a8f2cfcf

      SHA1

      5d157fb481c54c9c9aa0c397c96d892943738976

      SHA256

      c6b214362ad6eea7d8e857a9f794eab01930feeb3707b168ca29d1efbc70b412

      SHA512

      31ee8bc3ef818b3495f87bb6cfece9ea97e3f41d059426a9f85489c0a780bb26cab93920aba1962c6b84be5fe3eb3c2999af1a3e0e10e1c8804486dab410a983

    • C:\Users\Admin\AppData\Local\Temp\tmp9606.tmp
      Filesize

      1KB

      MD5

      8cad1b41587ced0f1e74396794f31d58

      SHA1

      11054bf74fcf5e8e412768035e4dae43aa7b710f

      SHA256

      3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

      SHA512

      99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

    • C:\Users\Admin\AppData\Local\Temp\tmp979D.tmp
      Filesize

      1KB

      MD5

      2f26d92c1eeead3896820e56ec46f6f1

      SHA1

      d95533b61eed7d89e4ada56bc566d60e42ac1f61

      SHA256

      99a158463ce40c750bad6991ae1fceece305a0dbf8e209dd7147b5d539756bfa

      SHA512

      6c1ed12d5e1afcd9e7f327e0153786fd8594f75a995f341c408ef014e69917452a9fe99c511f0249aceb57b3045b707f1fd3f404e4086cfbf0aadcb3318db892

    • memory/1524-75-0x0000000007700000-0x000000000771E000-memory.dmp
      Filesize

      120KB

    • memory/1524-95-0x0000000007DE0000-0x0000000007DE8000-memory.dmp
      Filesize

      32KB

    • memory/1524-64-0x0000000007740000-0x0000000007772000-memory.dmp
      Filesize

      200KB

    • memory/1524-52-0x0000000006830000-0x000000000687C000-memory.dmp
      Filesize

      304KB

    • memory/1524-51-0x0000000006790000-0x00000000067AE000-memory.dmp
      Filesize

      120KB

    • memory/1524-102-0x0000000075390000-0x0000000075B40000-memory.dmp
      Filesize

      7.7MB

    • memory/1524-65-0x0000000075C40000-0x0000000075C8C000-memory.dmp
      Filesize

      304KB

    • memory/1524-76-0x0000000007780000-0x0000000007823000-memory.dmp
      Filesize

      652KB

    • memory/1524-38-0x0000000075390000-0x0000000075B40000-memory.dmp
      Filesize

      7.7MB

    • memory/1524-88-0x0000000007AC0000-0x0000000007ADA000-memory.dmp
      Filesize

      104KB

    • memory/1524-20-0x0000000075390000-0x0000000075B40000-memory.dmp
      Filesize

      7.7MB

    • memory/1524-21-0x0000000075390000-0x0000000075B40000-memory.dmp
      Filesize

      7.7MB

    • memory/1524-93-0x0000000007D00000-0x0000000007D14000-memory.dmp
      Filesize

      80KB

    • memory/2624-15-0x000000007539E000-0x000000007539F000-memory.dmp
      Filesize

      4KB

    • memory/2624-50-0x0000000075390000-0x0000000075B40000-memory.dmp
      Filesize

      7.7MB

    • memory/2624-19-0x0000000075390000-0x0000000075B40000-memory.dmp
      Filesize

      7.7MB

    • memory/2624-5-0x0000000005B70000-0x0000000005B7A000-memory.dmp
      Filesize

      40KB

    • memory/2624-3-0x0000000005AD0000-0x0000000005B62000-memory.dmp
      Filesize

      584KB

    • memory/2624-7-0x0000000006D40000-0x0000000006D50000-memory.dmp
      Filesize

      64KB

    • memory/2624-8-0x0000000006D70000-0x0000000006D86000-memory.dmp
      Filesize

      88KB

    • memory/2624-6-0x00000000070C0000-0x00000000070DE000-memory.dmp
      Filesize

      120KB

    • memory/2624-0-0x000000007539E000-0x000000007539F000-memory.dmp
      Filesize

      4KB

    • memory/2624-4-0x0000000075390000-0x0000000075B40000-memory.dmp
      Filesize

      7.7MB

    • memory/2624-10-0x00000000096B0000-0x000000000974C000-memory.dmp
      Filesize

      624KB

    • memory/2624-9-0x0000000007110000-0x000000000718C000-memory.dmp
      Filesize

      496KB

    • memory/2624-2-0x0000000006080000-0x0000000006624000-memory.dmp
      Filesize

      5.6MB

    • memory/2624-1-0x0000000000FC0000-0x00000000010B2000-memory.dmp
      Filesize

      968KB

    • memory/3680-60-0x0000000005720000-0x000000000572A000-memory.dmp
      Filesize

      40KB

    • memory/3680-63-0x0000000006710000-0x000000000671A000-memory.dmp
      Filesize

      40KB

    • memory/3680-62-0x00000000059A0000-0x00000000059BE000-memory.dmp
      Filesize

      120KB

    • memory/3680-61-0x0000000005730000-0x000000000573C000-memory.dmp
      Filesize

      48KB

    • memory/3680-48-0x0000000000400000-0x000000000043A000-memory.dmp
      Filesize

      232KB

    • memory/4132-18-0x0000000005560000-0x0000000005B88000-memory.dmp
      Filesize

      6.2MB

    • memory/4132-24-0x0000000005B90000-0x0000000005BF6000-memory.dmp
      Filesize

      408KB

    • memory/4132-77-0x0000000075C40000-0x0000000075C8C000-memory.dmp
      Filesize

      304KB

    • memory/4132-37-0x0000000005D50000-0x00000000060A4000-memory.dmp
      Filesize

      3.3MB

    • memory/4132-27-0x0000000075390000-0x0000000075B40000-memory.dmp
      Filesize

      7.7MB

    • memory/4132-87-0x0000000007CC0000-0x000000000833A000-memory.dmp
      Filesize

      6.5MB

    • memory/4132-89-0x00000000076F0000-0x00000000076FA000-memory.dmp
      Filesize

      40KB

    • memory/4132-90-0x0000000007900000-0x0000000007996000-memory.dmp
      Filesize

      600KB

    • memory/4132-91-0x0000000007880000-0x0000000007891000-memory.dmp
      Filesize

      68KB

    • memory/4132-92-0x00000000078B0000-0x00000000078BE000-memory.dmp
      Filesize

      56KB

    • memory/4132-26-0x0000000005C00000-0x0000000005C66000-memory.dmp
      Filesize

      408KB

    • memory/4132-22-0x0000000075390000-0x0000000075B40000-memory.dmp
      Filesize

      7.7MB

    • memory/4132-94-0x00000000079C0000-0x00000000079DA000-memory.dmp
      Filesize

      104KB

    • memory/4132-23-0x0000000005490000-0x00000000054B2000-memory.dmp
      Filesize

      136KB

    • memory/4132-16-0x0000000004D80000-0x0000000004DB6000-memory.dmp
      Filesize

      216KB

    • memory/4132-17-0x0000000075390000-0x0000000075B40000-memory.dmp
      Filesize

      7.7MB

    • memory/4132-101-0x0000000075390000-0x0000000075B40000-memory.dmp
      Filesize

      7.7MB