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 08:30

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 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:5028
    • 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:4976
    • 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:4792
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA690.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2588
    • 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:536
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpABA1.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4484
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpADE4.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3588

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

    77b63d13f43b9301a188d03b8559f2e0

    SHA1

    e7f1f64b5df42f25fe2c4e9cf241f0e37e8b65a8

    SHA256

    b40b50d78f99d8c42b3a6c039660a584f41ac8d77fe112034531c4127f1da67b

    SHA512

    0629e19fea59d6770e5d776f322aaefa0452994782926cdf6e9c38fef3a39744226a219e33a724701601b83b95eb55af459c7c671687950b8e0e04a09ce3edac

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gulb1vbm.2hh.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpA690.tmp
    Filesize

    1KB

    MD5

    f7c5ed2cd473833b154217a52a430c51

    SHA1

    589d8d69330ed81aa7eab30717f4c384b80774c6

    SHA256

    f52d3cb7276344ea53186879470ef28cd1bd72838d711ec9630fe8c45a887cab

    SHA512

    9cd86b088fe15999de8a6027b379cd5a4c75267ee867fbaa01b52ae1a0a1bef099932bf7998a329c3721adc264f804b66581c23b1f42e65b2abcb9cb7478fd9a

  • C:\Users\Admin\AppData\Local\Temp\tmpABA1.tmp
    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmpADE4.tmp
    Filesize

    1KB

    MD5

    5fea24e883e06e4df6d240dc72abf2c5

    SHA1

    d778bf0f436141e02df4b421e8188abdcc9a84a4

    SHA256

    e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66

    SHA512

    15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924

  • memory/536-60-0x0000000004FB0000-0x0000000004FBC000-memory.dmp
    Filesize

    48KB

  • memory/536-61-0x0000000005290000-0x00000000052AE000-memory.dmp
    Filesize

    120KB

  • memory/536-62-0x0000000005FF0000-0x0000000005FFA000-memory.dmp
    Filesize

    40KB

  • memory/536-59-0x0000000004FA0000-0x0000000004FAA000-memory.dmp
    Filesize

    40KB

  • memory/536-32-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/4792-63-0x00000000073C0000-0x00000000073F2000-memory.dmp
    Filesize

    200KB

  • memory/4792-80-0x0000000007730000-0x0000000007741000-memory.dmp
    Filesize

    68KB

  • memory/4792-76-0x0000000007B70000-0x00000000081EA000-memory.dmp
    Filesize

    6.5MB

  • memory/4792-75-0x0000000007400000-0x00000000074A3000-memory.dmp
    Filesize

    652KB

  • memory/4792-74-0x00000000067E0000-0x00000000067FE000-memory.dmp
    Filesize

    120KB

  • memory/4792-20-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/4792-21-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/4792-64-0x00000000750D0000-0x000000007511C000-memory.dmp
    Filesize

    304KB

  • memory/4792-78-0x00000000075A0000-0x00000000075AA000-memory.dmp
    Filesize

    40KB

  • memory/4792-24-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/4792-33-0x0000000005BC0000-0x0000000005C26000-memory.dmp
    Filesize

    408KB

  • memory/4792-97-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/4792-39-0x0000000005D30000-0x0000000006084000-memory.dmp
    Filesize

    3.3MB

  • memory/4792-94-0x0000000007850000-0x0000000007858000-memory.dmp
    Filesize

    32KB

  • memory/4792-93-0x0000000007870000-0x000000000788A000-memory.dmp
    Filesize

    104KB

  • memory/4792-26-0x0000000005B50000-0x0000000005BB6000-memory.dmp
    Filesize

    408KB

  • memory/4792-79-0x00000000077B0000-0x0000000007846000-memory.dmp
    Filesize

    600KB

  • memory/4792-50-0x0000000006200000-0x000000000621E000-memory.dmp
    Filesize

    120KB

  • memory/4792-51-0x0000000006220000-0x000000000626C000-memory.dmp
    Filesize

    304KB

  • memory/4792-92-0x0000000007770000-0x0000000007784000-memory.dmp
    Filesize

    80KB

  • memory/4792-91-0x0000000007760000-0x000000000776E000-memory.dmp
    Filesize

    56KB

  • memory/4792-77-0x0000000007530000-0x000000000754A000-memory.dmp
    Filesize

    104KB

  • memory/4976-81-0x00000000750D0000-0x000000007511C000-memory.dmp
    Filesize

    304KB

  • memory/4976-25-0x0000000005730000-0x0000000005752000-memory.dmp
    Filesize

    136KB

  • memory/4976-15-0x0000000004A30000-0x0000000004A66000-memory.dmp
    Filesize

    216KB

  • memory/4976-101-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/4976-19-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/4976-18-0x00000000050D0000-0x00000000056F8000-memory.dmp
    Filesize

    6.2MB

  • memory/4976-17-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/5028-10-0x00000000090E0000-0x000000000917C000-memory.dmp
    Filesize

    624KB

  • memory/5028-0-0x000000007482E000-0x000000007482F000-memory.dmp
    Filesize

    4KB

  • memory/5028-3-0x0000000005560000-0x00000000055F2000-memory.dmp
    Filesize

    584KB

  • memory/5028-4-0x0000000005480000-0x000000000548A000-memory.dmp
    Filesize

    40KB

  • memory/5028-5-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/5028-6-0x0000000005A80000-0x0000000005A9E000-memory.dmp
    Filesize

    120KB

  • memory/5028-7-0x0000000005AC0000-0x0000000005AD0000-memory.dmp
    Filesize

    64KB

  • memory/5028-8-0x0000000005AF0000-0x0000000005B06000-memory.dmp
    Filesize

    88KB

  • memory/5028-9-0x00000000069B0000-0x0000000006A2C000-memory.dmp
    Filesize

    496KB

  • memory/5028-49-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/5028-16-0x000000007482E000-0x000000007482F000-memory.dmp
    Filesize

    4KB

  • memory/5028-2-0x0000000005B10000-0x00000000060B4000-memory.dmp
    Filesize

    5.6MB

  • memory/5028-1-0x0000000000990000-0x0000000000A82000-memory.dmp
    Filesize

    968KB

  • memory/5028-22-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB