Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-05-2024 08:26

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 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\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:964
    • 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:4848
    • 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:4200
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA930.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3912
    • 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:3120
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "AGP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAF0C.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2132
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "AGP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB1EC.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4744

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

    bca86e4a50b25f0f2d707f274af33c9a

    SHA1

    77c931c3a9ca9ec13517bbac6fd596b52dcf5930

    SHA256

    fbf6a95fa0e78098191c46af625ef937ff41991a9bd420869cee49b192212fdf

    SHA512

    65181359e20c17d675d2232c06d7cfdfb8b743fb323b8d0971e0103018123f010944c4a9095dc42f7d9510c38712886ff34bed07536b13f7fae04e25826bcb82

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_s1nc4i5a.xqa.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpA930.tmp
    Filesize

    1KB

    MD5

    b196f968b0d5cf29b66132ec32c43639

    SHA1

    6eb793678b3b221b49641476a3e2424767a02787

    SHA256

    f8f0cb8d6b1e45a9527cd1ab597546e81901020bcc03da82ea9036ba17078010

    SHA512

    3d124b1418014e8765e0bf320f7c9a96c67b0265ad855ebf782e2b5dd17d3be28f022e408ccce8a7d9f44f5681eff3676f3117ce25348b5266c80104e4eee816

  • C:\Users\Admin\AppData\Local\Temp\tmpAF0C.tmp
    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmpB1EC.tmp
    Filesize

    1KB

    MD5

    7a81ae69c04c8d95261eb5f490b7f869

    SHA1

    9f4f484d306fea15b2e7f9f16db660833bb1f8ce

    SHA256

    ce3933e772f663a834335cc2071e5e7b2d49a065b51d84a259054b8ef663e785

    SHA512

    8260ab83106752a488e164bbed63ef334d34399bc9a5c09a0cfceba6aef48eafe5c64e4dfbd353ac3edfff2523b16c2b0287d34833a293c4436e068fae656de8

  • memory/964-0-0x00000000751DE000-0x00000000751DF000-memory.dmp
    Filesize

    4KB

  • memory/964-17-0x00000000751D0000-0x0000000075980000-memory.dmp
    Filesize

    7.7MB

  • memory/964-8-0x0000000006150000-0x0000000006166000-memory.dmp
    Filesize

    88KB

  • memory/964-9-0x0000000006460000-0x00000000064DC000-memory.dmp
    Filesize

    496KB

  • memory/964-10-0x0000000008AD0000-0x0000000008B6C000-memory.dmp
    Filesize

    624KB

  • memory/964-15-0x00000000751DE000-0x00000000751DF000-memory.dmp
    Filesize

    4KB

  • memory/964-3-0x0000000004B00000-0x0000000004B92000-memory.dmp
    Filesize

    584KB

  • memory/964-2-0x0000000005010000-0x00000000055B4000-memory.dmp
    Filesize

    5.6MB

  • memory/964-4-0x0000000004AD0000-0x0000000004ADA000-memory.dmp
    Filesize

    40KB

  • memory/964-7-0x0000000005000000-0x0000000005010000-memory.dmp
    Filesize

    64KB

  • memory/964-50-0x00000000751D0000-0x0000000075980000-memory.dmp
    Filesize

    7.7MB

  • memory/964-5-0x00000000751D0000-0x0000000075980000-memory.dmp
    Filesize

    7.7MB

  • memory/964-1-0x0000000000110000-0x0000000000202000-memory.dmp
    Filesize

    968KB

  • memory/964-6-0x0000000004DA0000-0x0000000004DBE000-memory.dmp
    Filesize

    120KB

  • memory/3120-62-0x0000000005A60000-0x0000000005A7E000-memory.dmp
    Filesize

    120KB

  • memory/3120-63-0x0000000005D80000-0x0000000005D8A000-memory.dmp
    Filesize

    40KB

  • memory/3120-61-0x00000000059E0000-0x00000000059EC000-memory.dmp
    Filesize

    48KB

  • memory/3120-60-0x0000000005890000-0x000000000589A000-memory.dmp
    Filesize

    40KB

  • memory/3120-47-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/4200-86-0x0000000007550000-0x00000000075F3000-memory.dmp
    Filesize

    652KB

  • memory/4200-93-0x0000000007AC0000-0x0000000007AD4000-memory.dmp
    Filesize

    80KB

  • memory/4200-49-0x00000000751D0000-0x0000000075980000-memory.dmp
    Filesize

    7.7MB

  • memory/4200-43-0x00000000751D0000-0x0000000075980000-memory.dmp
    Filesize

    7.7MB

  • memory/4200-98-0x00000000751D0000-0x0000000075980000-memory.dmp
    Filesize

    7.7MB

  • memory/4200-95-0x0000000007BA0000-0x0000000007BA8000-memory.dmp
    Filesize

    32KB

  • memory/4200-94-0x0000000007BC0000-0x0000000007BDA000-memory.dmp
    Filesize

    104KB

  • memory/4200-88-0x0000000007880000-0x000000000789A000-memory.dmp
    Filesize

    104KB

  • memory/4200-42-0x00000000060A0000-0x00000000063F4000-memory.dmp
    Filesize

    3.3MB

  • memory/4200-29-0x00000000751D0000-0x0000000075980000-memory.dmp
    Filesize

    7.7MB

  • memory/4200-92-0x0000000007AB0000-0x0000000007ABE000-memory.dmp
    Filesize

    56KB

  • memory/4200-91-0x0000000007A80000-0x0000000007A91000-memory.dmp
    Filesize

    68KB

  • memory/4200-90-0x0000000007B00000-0x0000000007B96000-memory.dmp
    Filesize

    600KB

  • memory/4200-89-0x00000000078F0000-0x00000000078FA000-memory.dmp
    Filesize

    40KB

  • memory/4200-76-0x0000000075A50000-0x0000000075A9C000-memory.dmp
    Filesize

    304KB

  • memory/4200-87-0x0000000007EC0000-0x000000000853A000-memory.dmp
    Filesize

    6.5MB

  • memory/4848-36-0x0000000005E10000-0x0000000005E76000-memory.dmp
    Filesize

    408KB

  • memory/4848-64-0x00000000073A0000-0x00000000073D2000-memory.dmp
    Filesize

    200KB

  • memory/4848-18-0x00000000056E0000-0x0000000005D08000-memory.dmp
    Filesize

    6.2MB

  • memory/4848-75-0x00000000069D0000-0x00000000069EE000-memory.dmp
    Filesize

    120KB

  • memory/4848-65-0x0000000075A50000-0x0000000075A9C000-memory.dmp
    Filesize

    304KB

  • memory/4848-20-0x00000000751D0000-0x0000000075980000-memory.dmp
    Filesize

    7.7MB

  • memory/4848-21-0x00000000751D0000-0x0000000075980000-memory.dmp
    Filesize

    7.7MB

  • memory/4848-35-0x00000000055C0000-0x0000000005626000-memory.dmp
    Filesize

    408KB

  • memory/4848-28-0x0000000005520000-0x0000000005542000-memory.dmp
    Filesize

    136KB

  • memory/4848-55-0x0000000006940000-0x000000000698C000-memory.dmp
    Filesize

    304KB

  • memory/4848-52-0x00000000063E0000-0x00000000063FE000-memory.dmp
    Filesize

    120KB

  • memory/4848-19-0x00000000751D0000-0x0000000075980000-memory.dmp
    Filesize

    7.7MB

  • memory/4848-16-0x0000000002AA0000-0x0000000002AD6000-memory.dmp
    Filesize

    216KB

  • memory/4848-102-0x00000000751D0000-0x0000000075980000-memory.dmp
    Filesize

    7.7MB