Analysis

  • max time kernel
    157s
  • max time network
    165s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-05-2024 08:36

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 30 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\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: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\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1684
    • 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:4324
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1C58.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4400
    • 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:3484
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp60E3.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2680
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "SMTP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp624B.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1240
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4092 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2892

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_w0uksevy.hw2.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp1C58.tmp

      Filesize

      1KB

      MD5

      0b7bab11a2af0180e35fd228be4d67e8

      SHA1

      2e0aa315f165afe0d09a7d50dcafa93bc5bbad2d

      SHA256

      f915fec06afb59de8434e8e87f1a4603a56e2a30dca7e1c00db439114f80ff28

      SHA512

      a2c8808dab79c4a5bf8d76c16eb8914080989498ba1229a18826aed6be9e480d1eba24f9625d279219bd43f70292399c66647e47bf788011ac0125fcd6f99f77

    • C:\Users\Admin\AppData\Local\Temp\tmp60E3.tmp

      Filesize

      1KB

      MD5

      8cad1b41587ced0f1e74396794f31d58

      SHA1

      11054bf74fcf5e8e412768035e4dae43aa7b710f

      SHA256

      3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

      SHA512

      99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

    • C:\Users\Admin\AppData\Local\Temp\tmp624B.tmp

      Filesize

      1KB

      MD5

      0339b45ef206f4becc88be0d65e24b9e

      SHA1

      6503a1851f4ccd8c80a31f96bd7ae40d962c9fad

      SHA256

      3d568a47a8944a47f4aed6982755ac7ff7dda469cc1c81c213ecaa5d89de1f83

      SHA512

      c98f4513db34d50510dd986e0d812545c442bd5bef26932032b165759627fab4e00c95fe907ab3416a8a1042bfa77aa516c479f1ff7d1ec2f21ae66df8f72551

    • memory/1684-14-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/1684-13-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/1684-42-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/1684-97-0x0000000007040000-0x0000000007048000-memory.dmp

      Filesize

      32KB

    • memory/1684-96-0x0000000007050000-0x000000000706A000-memory.dmp

      Filesize

      104KB

    • memory/1684-88-0x0000000006D50000-0x0000000006DF3000-memory.dmp

      Filesize

      652KB

    • memory/1684-69-0x0000000070A10000-0x0000000070A5C000-memory.dmp

      Filesize

      304KB

    • memory/1684-64-0x0000000005CD0000-0x0000000005CEE000-memory.dmp

      Filesize

      120KB

    • memory/1684-27-0x0000000004C00000-0x0000000004C22000-memory.dmp

      Filesize

      136KB

    • memory/1684-47-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/1684-100-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/1684-15-0x0000000002370000-0x00000000023A6000-memory.dmp

      Filesize

      216KB

    • memory/1684-17-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/3484-59-0x0000000005450000-0x000000000545C000-memory.dmp

      Filesize

      48KB

    • memory/3484-60-0x0000000005780000-0x000000000579E000-memory.dmp

      Filesize

      120KB

    • memory/3484-62-0x0000000006600000-0x000000000660A000-memory.dmp

      Filesize

      40KB

    • memory/3484-24-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/3484-57-0x0000000005440000-0x000000000544A000-memory.dmp

      Filesize

      40KB

    • memory/4324-21-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/4324-92-0x0000000007BD0000-0x0000000007C66000-memory.dmp

      Filesize

      600KB

    • memory/4324-29-0x0000000005660000-0x00000000056C6000-memory.dmp

      Filesize

      408KB

    • memory/4324-101-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/4324-95-0x0000000007B90000-0x0000000007BA4000-memory.dmp

      Filesize

      80KB

    • memory/4324-94-0x0000000007B80000-0x0000000007B8E000-memory.dmp

      Filesize

      56KB

    • memory/4324-93-0x0000000007B50000-0x0000000007B61000-memory.dmp

      Filesize

      68KB

    • memory/4324-28-0x00000000055F0000-0x0000000005656000-memory.dmp

      Filesize

      408KB

    • memory/4324-22-0x00000000057B0000-0x0000000005DD8000-memory.dmp

      Filesize

      6.2MB

    • memory/4324-58-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/4324-91-0x00000000079C0000-0x00000000079CA000-memory.dmp

      Filesize

      40KB

    • memory/4324-90-0x0000000006AD0000-0x0000000006AEA000-memory.dmp

      Filesize

      104KB

    • memory/4324-61-0x0000000006100000-0x0000000006454000-memory.dmp

      Filesize

      3.3MB

    • memory/4324-89-0x0000000007F90000-0x000000000860A000-memory.dmp

      Filesize

      6.5MB

    • memory/4324-63-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/4324-83-0x0000000006BF0000-0x0000000006C0E000-memory.dmp

      Filesize

      120KB

    • memory/4324-65-0x0000000006690000-0x00000000066DC000-memory.dmp

      Filesize

      304KB

    • memory/4324-66-0x00000000075F0000-0x0000000007622000-memory.dmp

      Filesize

      200KB

    • memory/4324-67-0x0000000070A10000-0x0000000070A5C000-memory.dmp

      Filesize

      304KB

    • memory/4480-10-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/4480-1-0x0000000000830000-0x0000000000922000-memory.dmp

      Filesize

      968KB

    • memory/4480-9-0x0000000005680000-0x0000000005696000-memory.dmp

      Filesize

      88KB

    • memory/4480-12-0x0000000009620000-0x00000000096BC000-memory.dmp

      Filesize

      624KB

    • memory/4480-0-0x0000000074F0E000-0x0000000074F0F000-memory.dmp

      Filesize

      4KB

    • memory/4480-5-0x0000000005320000-0x000000000532A000-memory.dmp

      Filesize

      40KB

    • memory/4480-11-0x0000000006F90000-0x000000000700C000-memory.dmp

      Filesize

      496KB

    • memory/4480-4-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/4480-8-0x0000000005650000-0x0000000005660000-memory.dmp

      Filesize

      64KB

    • memory/4480-26-0x0000000074F00000-0x00000000756B0000-memory.dmp

      Filesize

      7.7MB

    • memory/4480-2-0x0000000005900000-0x0000000005EA4000-memory.dmp

      Filesize

      5.6MB

    • memory/4480-7-0x0000000074F0E000-0x0000000074F0F000-memory.dmp

      Filesize

      4KB

    • memory/4480-6-0x0000000005600000-0x000000000561E000-memory.dmp

      Filesize

      120KB

    • memory/4480-3-0x0000000005350000-0x00000000053E2000-memory.dmp

      Filesize

      584KB