Analysis

  • max time kernel
    147s
  • 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
    11-05-2024 08:32

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:3260
    • 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:3152
    • 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:3236
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA316.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:548
    • 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:1548
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA79A.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4328
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAD58.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1104

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

    54840cac41f62b06a77e13fee2d0a20b

    SHA1

    f3d7c1c61ad791df17c181569b7145df304d6495

    SHA256

    b666a101e801c096a9fa527af5bf120c80871027041f1d21ba215afb024c922f

    SHA512

    69b2cceb7088f044924b1ec2a398a9c3c81974624a632774488e4da5762415c43a5bfec663f66f88844c6b06e80581adf52a3e6d24430846475225b501f37a98

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0mzptz3t.ud4.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpA316.tmp
    Filesize

    1KB

    MD5

    f7c5ed2cd473833b154217a52a430c51

    SHA1

    589d8d69330ed81aa7eab30717f4c384b80774c6

    SHA256

    f52d3cb7276344ea53186879470ef28cd1bd72838d711ec9630fe8c45a887cab

    SHA512

    9cd86b088fe15999de8a6027b379cd5a4c75267ee867fbaa01b52ae1a0a1bef099932bf7998a329c3721adc264f804b66581c23b1f42e65b2abcb9cb7478fd9a

  • C:\Users\Admin\AppData\Local\Temp\tmpA79A.tmp
    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmpAD58.tmp
    Filesize

    1KB

    MD5

    5fea24e883e06e4df6d240dc72abf2c5

    SHA1

    d778bf0f436141e02df4b421e8188abdcc9a84a4

    SHA256

    e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66

    SHA512

    15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924

  • memory/1548-60-0x0000000005C90000-0x0000000005CAE000-memory.dmp
    Filesize

    120KB

  • memory/1548-61-0x0000000006A30000-0x0000000006A3A000-memory.dmp
    Filesize

    40KB

  • memory/1548-59-0x00000000059A0000-0x00000000059AC000-memory.dmp
    Filesize

    48KB

  • memory/1548-58-0x0000000005990000-0x000000000599A000-memory.dmp
    Filesize

    40KB

  • memory/1548-41-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/3152-50-0x0000000005EB0000-0x0000000005EFC000-memory.dmp
    Filesize

    304KB

  • memory/3152-93-0x0000000007500000-0x0000000007508000-memory.dmp
    Filesize

    32KB

  • memory/3152-17-0x0000000005090000-0x00000000056B8000-memory.dmp
    Filesize

    6.2MB

  • memory/3152-18-0x0000000074A50000-0x0000000075200000-memory.dmp
    Filesize

    7.7MB

  • memory/3152-100-0x0000000074A50000-0x0000000075200000-memory.dmp
    Filesize

    7.7MB

  • memory/3152-19-0x0000000074A50000-0x0000000075200000-memory.dmp
    Filesize

    7.7MB

  • memory/3152-21-0x0000000074A50000-0x0000000075200000-memory.dmp
    Filesize

    7.7MB

  • memory/3152-84-0x0000000007080000-0x0000000007123000-memory.dmp
    Filesize

    652KB

  • memory/3152-83-0x0000000006E10000-0x0000000006E2E000-memory.dmp
    Filesize

    120KB

  • memory/3152-89-0x00000000073E0000-0x00000000073F1000-memory.dmp
    Filesize

    68KB

  • memory/3152-63-0x0000000075300000-0x000000007534C000-memory.dmp
    Filesize

    304KB

  • memory/3152-15-0x00000000025E0000-0x0000000002616000-memory.dmp
    Filesize

    216KB

  • memory/3152-85-0x0000000007820000-0x0000000007E9A000-memory.dmp
    Filesize

    6.5MB

  • memory/3152-86-0x00000000071E0000-0x00000000071FA000-memory.dmp
    Filesize

    104KB

  • memory/3152-87-0x0000000007250000-0x000000000725A000-memory.dmp
    Filesize

    40KB

  • memory/3152-33-0x0000000005840000-0x0000000005862000-memory.dmp
    Filesize

    136KB

  • memory/3152-91-0x0000000007420000-0x0000000007434000-memory.dmp
    Filesize

    80KB

  • memory/3152-49-0x0000000005E90000-0x0000000005EAE000-memory.dmp
    Filesize

    120KB

  • memory/3236-22-0x0000000074A50000-0x0000000075200000-memory.dmp
    Filesize

    7.7MB

  • memory/3236-90-0x0000000007DE0000-0x0000000007DEE000-memory.dmp
    Filesize

    56KB

  • memory/3236-88-0x0000000007E30000-0x0000000007EC6000-memory.dmp
    Filesize

    600KB

  • memory/3236-92-0x0000000007EF0000-0x0000000007F0A000-memory.dmp
    Filesize

    104KB

  • memory/3236-43-0x0000000006380000-0x00000000066D4000-memory.dmp
    Filesize

    3.3MB

  • memory/3236-39-0x00000000061A0000-0x0000000006206000-memory.dmp
    Filesize

    408KB

  • memory/3236-64-0x0000000075300000-0x000000007534C000-memory.dmp
    Filesize

    304KB

  • memory/3236-40-0x0000000006310000-0x0000000006376000-memory.dmp
    Filesize

    408KB

  • memory/3236-99-0x0000000074A50000-0x0000000075200000-memory.dmp
    Filesize

    7.7MB

  • memory/3236-62-0x0000000007A20000-0x0000000007A52000-memory.dmp
    Filesize

    200KB

  • memory/3260-9-0x0000000006C10000-0x0000000006C8C000-memory.dmp
    Filesize

    496KB

  • memory/3260-3-0x00000000056F0000-0x0000000005782000-memory.dmp
    Filesize

    584KB

  • memory/3260-4-0x00000000056A0000-0x00000000056AA000-memory.dmp
    Filesize

    40KB

  • memory/3260-5-0x0000000074A50000-0x0000000075200000-memory.dmp
    Filesize

    7.7MB

  • memory/3260-6-0x0000000005980000-0x000000000599E000-memory.dmp
    Filesize

    120KB

  • memory/3260-7-0x00000000059C0000-0x00000000059D0000-memory.dmp
    Filesize

    64KB

  • memory/3260-8-0x00000000059F0000-0x0000000005A06000-memory.dmp
    Filesize

    88KB

  • memory/3260-0-0x0000000074A5E000-0x0000000074A5F000-memory.dmp
    Filesize

    4KB

  • memory/3260-48-0x0000000074A50000-0x0000000075200000-memory.dmp
    Filesize

    7.7MB

  • memory/3260-10-0x0000000009340000-0x00000000093DC000-memory.dmp
    Filesize

    624KB

  • memory/3260-2-0x0000000005C00000-0x00000000061A4000-memory.dmp
    Filesize

    5.6MB

  • memory/3260-1-0x0000000000BA0000-0x0000000000C92000-memory.dmp
    Filesize

    968KB

  • memory/3260-28-0x0000000074A50000-0x0000000075200000-memory.dmp
    Filesize

    7.7MB

  • memory/3260-16-0x0000000074A5E000-0x0000000074A5F000-memory.dmp
    Filesize

    4KB