Analysis

  • max time kernel
    149s
  • max time network
    154s
  • 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 08:37

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:2604
    • 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:3328
    • 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:2636
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE0AB.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1596
    • 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:3216
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE791.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4984
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE9F3.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2108

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

    73ec8015784acc179e92200970c5e297

    SHA1

    e05f7581cf801593fd486f13fef15ef0a7df413c

    SHA256

    903f75f42dddbc451e872bf9bf6fc236eed6444efd11fe40fe816447bbd778d8

    SHA512

    9dc9928a2933dae4767394159a880abf948a3deb8f327d6c602651c62a7a4415a53bdda2426992f26f8a6cf484c725b614f42b517abaadc715824d084c546f35

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r4qycsip.joj.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpE0AB.tmp
    Filesize

    1KB

    MD5

    b7304fae98f79cca9a46e35ea6295e70

    SHA1

    c5728f90dc7eac1d991beb6b145a15acffe88f4b

    SHA256

    5af6ba12665361e283e4affac08134f50e2a855aa0e901554d5d906acb375305

    SHA512

    4accba4d47714ddcd52d2cf33c5af476933ec4b47b1a871f35e4760c6a8ec77875149c6e8afa8f0f10a83ba0adf0a684fcaf545af8b9a2129018b12e94a582af

  • C:\Users\Admin\AppData\Local\Temp\tmpE791.tmp
    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmpE9F3.tmp
    Filesize

    1KB

    MD5

    a77c223a0fc492dccd6fb9975f7a8766

    SHA1

    5e813636ae9b8138d78919348a5da3a6e8bd74b5

    SHA256

    589df7325d42409c50827600fedb240171ee4bdab85916474a37800c2382829e

    SHA512

    315cea8fde3c594404f5d3c96c710af1214cff6d08ccdb40634a739e108ff810e02624735a2b8c3e3720157b4a55327f317c3c23c3a681b46b9ab0f19060f7c0

  • memory/2604-15-0x000000007481E000-0x000000007481F000-memory.dmp
    Filesize

    4KB

  • memory/2604-3-0x0000000005B30000-0x0000000005BC2000-memory.dmp
    Filesize

    584KB

  • memory/2604-8-0x0000000006030000-0x0000000006046000-memory.dmp
    Filesize

    88KB

  • memory/2604-9-0x0000000007160000-0x00000000071DC000-memory.dmp
    Filesize

    496KB

  • memory/2604-10-0x00000000096F0000-0x000000000978C000-memory.dmp
    Filesize

    624KB

  • memory/2604-50-0x0000000074810000-0x0000000074FC0000-memory.dmp
    Filesize

    7.7MB

  • memory/2604-1-0x0000000000FF0000-0x00000000010E2000-memory.dmp
    Filesize

    968KB

  • memory/2604-6-0x0000000005DC0000-0x0000000005DDE000-memory.dmp
    Filesize

    120KB

  • memory/2604-5-0x0000000074810000-0x0000000074FC0000-memory.dmp
    Filesize

    7.7MB

  • memory/2604-2-0x0000000006040000-0x00000000065E4000-memory.dmp
    Filesize

    5.6MB

  • memory/2604-7-0x0000000005E10000-0x0000000005E20000-memory.dmp
    Filesize

    64KB

  • memory/2604-4-0x0000000005AF0000-0x0000000005AFA000-memory.dmp
    Filesize

    40KB

  • memory/2604-0-0x000000007481E000-0x000000007481F000-memory.dmp
    Filesize

    4KB

  • memory/2604-23-0x0000000074810000-0x0000000074FC0000-memory.dmp
    Filesize

    7.7MB

  • memory/2636-22-0x0000000074810000-0x0000000074FC0000-memory.dmp
    Filesize

    7.7MB

  • memory/2636-25-0x0000000074810000-0x0000000074FC0000-memory.dmp
    Filesize

    7.7MB

  • memory/2636-20-0x0000000074810000-0x0000000074FC0000-memory.dmp
    Filesize

    7.7MB

  • memory/2636-83-0x00000000750A0000-0x00000000750EC000-memory.dmp
    Filesize

    304KB

  • memory/2636-44-0x00000000062A0000-0x00000000065F4000-memory.dmp
    Filesize

    3.3MB

  • memory/2636-38-0x0000000006230000-0x0000000006296000-memory.dmp
    Filesize

    408KB

  • memory/2636-102-0x0000000074810000-0x0000000074FC0000-memory.dmp
    Filesize

    7.7MB

  • memory/3216-77-0x0000000005220000-0x000000000522C000-memory.dmp
    Filesize

    48KB

  • memory/3216-78-0x0000000005620000-0x000000000563E000-memory.dmp
    Filesize

    120KB

  • memory/3216-76-0x0000000005210000-0x000000000521A000-memory.dmp
    Filesize

    40KB

  • memory/3216-39-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/3216-79-0x0000000005720000-0x000000000572A000-memory.dmp
    Filesize

    40KB

  • memory/3328-24-0x0000000074810000-0x0000000074FC0000-memory.dmp
    Filesize

    7.7MB

  • memory/3328-72-0x0000000007D60000-0x00000000083DA000-memory.dmp
    Filesize

    6.5MB

  • memory/3328-60-0x00000000750A0000-0x00000000750EC000-memory.dmp
    Filesize

    304KB

  • memory/3328-73-0x00000000076E0000-0x00000000076FA000-memory.dmp
    Filesize

    104KB

  • memory/3328-26-0x0000000005C10000-0x0000000005C32000-memory.dmp
    Filesize

    136KB

  • memory/3328-70-0x0000000006950000-0x000000000696E000-memory.dmp
    Filesize

    120KB

  • memory/3328-29-0x0000000005CB0000-0x0000000005D16000-memory.dmp
    Filesize

    408KB

  • memory/3328-80-0x0000000007950000-0x00000000079E6000-memory.dmp
    Filesize

    600KB

  • memory/3328-52-0x00000000069D0000-0x0000000006A1C000-memory.dmp
    Filesize

    304KB

  • memory/3328-51-0x00000000063A0000-0x00000000063BE000-memory.dmp
    Filesize

    120KB

  • memory/3328-74-0x0000000007740000-0x000000000774A000-memory.dmp
    Filesize

    40KB

  • memory/3328-71-0x0000000007430000-0x00000000074D3000-memory.dmp
    Filesize

    652KB

  • memory/3328-59-0x0000000006910000-0x0000000006942000-memory.dmp
    Filesize

    200KB

  • memory/3328-81-0x00000000078D0000-0x00000000078E1000-memory.dmp
    Filesize

    68KB

  • memory/3328-82-0x0000000007920000-0x000000000792E000-memory.dmp
    Filesize

    56KB

  • memory/3328-19-0x0000000074810000-0x0000000074FC0000-memory.dmp
    Filesize

    7.7MB

  • memory/3328-93-0x0000000007930000-0x0000000007944000-memory.dmp
    Filesize

    80KB

  • memory/3328-94-0x0000000007A20000-0x0000000007A3A000-memory.dmp
    Filesize

    104KB

  • memory/3328-95-0x0000000007A10000-0x0000000007A18000-memory.dmp
    Filesize

    32KB

  • memory/3328-98-0x0000000074810000-0x0000000074FC0000-memory.dmp
    Filesize

    7.7MB

  • memory/3328-17-0x0000000074810000-0x0000000074FC0000-memory.dmp
    Filesize

    7.7MB

  • memory/3328-18-0x00000000055E0000-0x0000000005C08000-memory.dmp
    Filesize

    6.2MB

  • memory/3328-16-0x0000000002A60000-0x0000000002A96000-memory.dmp
    Filesize

    216KB