Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-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:928
    • 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:1080
    • 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:2920
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8722.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3512
    • 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:5104
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8B58.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3344
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8C82.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1348

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

    7e72f71f448724ce1138f1f5144b34a3

    SHA1

    478133d8ced1674c9f1493f01b2bc84474d0d04f

    SHA256

    3ea6ef6eb28e88aa4f99be29266162a3fd2c439429d5e878244e2980487b6a49

    SHA512

    eb30fa76c7cc428e55eca1bb19e80f39835de3301f1259f099634e1a3892b0a6b78795e5b2e9c2127b851cf720912a089b8e84f9e694b17c6a4601712c889492

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kfjvz3gy.c5l.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp8722.tmp
    Filesize

    1KB

    MD5

    05c226023ee985f2f04595b94152203a

    SHA1

    387c43dbb6ab0e984f13fa2a434430fab589fc89

    SHA256

    994606ea901207b37edd4b4f449279edaab2ea3eded449476de986b9bb5efadb

    SHA512

    26b98771a626af95691bfc31c8a53e388a080662f13af84d4466380c2039ff8f0d46c07615176f972eb0264447c210f9bd8b3ae674161164edf2929d9f8399f7

  • C:\Users\Admin\AppData\Local\Temp\tmp8B58.tmp
    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmp8C82.tmp
    Filesize

    1KB

    MD5

    e7d3c8560fe3e223f6dfa16c2066930e

    SHA1

    8e7729d6856489a28fb1fd6d2fbc3661d6394f18

    SHA256

    ec5bea77c4f620d54db7e0ea1ee81551631b7d9e42ae619deaa9a14f5f69415f

    SHA512

    f6a4f3bf0fa30a459a662250f502772f431c1cef5562f8a3e9770529c5d24e7226b46531af8c9e96a556f417a275caaa70df96fddaa482c5218bb6b47f2614ae

  • memory/928-10-0x0000000008AA0000-0x0000000008B3C000-memory.dmp
    Filesize

    624KB

  • memory/928-4-0x0000000004E90000-0x0000000004E9A000-memory.dmp
    Filesize

    40KB

  • memory/928-8-0x00000000053F0000-0x0000000005406000-memory.dmp
    Filesize

    88KB

  • memory/928-9-0x0000000006410000-0x000000000648C000-memory.dmp
    Filesize

    496KB

  • memory/928-6-0x0000000005160000-0x000000000517E000-memory.dmp
    Filesize

    120KB

  • memory/928-5-0x0000000074BA0000-0x0000000075350000-memory.dmp
    Filesize

    7.7MB

  • memory/928-15-0x0000000074BAE000-0x0000000074BAF000-memory.dmp
    Filesize

    4KB

  • memory/928-7-0x00000000051B0000-0x00000000051C0000-memory.dmp
    Filesize

    64KB

  • memory/928-2-0x0000000005460000-0x0000000005A04000-memory.dmp
    Filesize

    5.6MB

  • memory/928-20-0x0000000074BA0000-0x0000000075350000-memory.dmp
    Filesize

    7.7MB

  • memory/928-3-0x0000000004EB0000-0x0000000004F42000-memory.dmp
    Filesize

    584KB

  • memory/928-49-0x0000000074BA0000-0x0000000075350000-memory.dmp
    Filesize

    7.7MB

  • memory/928-1-0x0000000000390000-0x0000000000482000-memory.dmp
    Filesize

    968KB

  • memory/928-0-0x0000000074BAE000-0x0000000074BAF000-memory.dmp
    Filesize

    4KB

  • memory/1080-27-0x00000000055B0000-0x00000000055D2000-memory.dmp
    Filesize

    136KB

  • memory/1080-75-0x0000000006F10000-0x0000000006FB3000-memory.dmp
    Filesize

    652KB

  • memory/1080-31-0x0000000005730000-0x0000000005796000-memory.dmp
    Filesize

    408KB

  • memory/1080-42-0x00000000058A0000-0x0000000005BF4000-memory.dmp
    Filesize

    3.3MB

  • memory/1080-30-0x0000000005650000-0x00000000056B6000-memory.dmp
    Filesize

    408KB

  • memory/1080-16-0x0000000004740000-0x0000000004776000-memory.dmp
    Filesize

    216KB

  • memory/1080-100-0x0000000074BA0000-0x0000000075350000-memory.dmp
    Filesize

    7.7MB

  • memory/1080-21-0x0000000074BA0000-0x0000000075350000-memory.dmp
    Filesize

    7.7MB

  • memory/1080-50-0x0000000005D10000-0x0000000005D2E000-memory.dmp
    Filesize

    120KB

  • memory/1080-51-0x00000000062A0000-0x00000000062EC000-memory.dmp
    Filesize

    304KB

  • memory/1080-19-0x0000000004E50000-0x0000000005478000-memory.dmp
    Filesize

    6.2MB

  • memory/1080-18-0x0000000074BA0000-0x0000000075350000-memory.dmp
    Filesize

    7.7MB

  • memory/1080-17-0x0000000074BA0000-0x0000000075350000-memory.dmp
    Filesize

    7.7MB

  • memory/1080-93-0x0000000007380000-0x000000000739A000-memory.dmp
    Filesize

    104KB

  • memory/1080-92-0x0000000007280000-0x0000000007294000-memory.dmp
    Filesize

    80KB

  • memory/1080-91-0x0000000007270000-0x000000000727E000-memory.dmp
    Filesize

    56KB

  • memory/1080-63-0x0000000006ED0000-0x0000000006F02000-memory.dmp
    Filesize

    200KB

  • memory/1080-90-0x0000000007240000-0x0000000007251000-memory.dmp
    Filesize

    68KB

  • memory/1080-74-0x0000000006260000-0x000000000627E000-memory.dmp
    Filesize

    120KB

  • memory/1080-64-0x0000000075450000-0x000000007549C000-memory.dmp
    Filesize

    304KB

  • memory/1080-77-0x0000000007040000-0x000000000705A000-memory.dmp
    Filesize

    104KB

  • memory/1080-76-0x0000000007680000-0x0000000007CFA000-memory.dmp
    Filesize

    6.5MB

  • memory/1080-89-0x00000000072C0000-0x0000000007356000-memory.dmp
    Filesize

    600KB

  • memory/1080-88-0x00000000070B0000-0x00000000070BA000-memory.dmp
    Filesize

    40KB

  • memory/2920-78-0x0000000075450000-0x000000007549C000-memory.dmp
    Filesize

    304KB

  • memory/2920-36-0x0000000074BA0000-0x0000000075350000-memory.dmp
    Filesize

    7.7MB

  • memory/2920-94-0x00000000071D0000-0x00000000071D8000-memory.dmp
    Filesize

    32KB

  • memory/2920-101-0x0000000074BA0000-0x0000000075350000-memory.dmp
    Filesize

    7.7MB

  • memory/2920-29-0x0000000074BA0000-0x0000000075350000-memory.dmp
    Filesize

    7.7MB

  • memory/5104-59-0x00000000053A0000-0x00000000053AA000-memory.dmp
    Filesize

    40KB

  • memory/5104-62-0x0000000006520000-0x000000000652A000-memory.dmp
    Filesize

    40KB

  • memory/5104-61-0x0000000005730000-0x000000000574E000-memory.dmp
    Filesize

    120KB

  • memory/5104-60-0x00000000053B0000-0x00000000053BC000-memory.dmp
    Filesize

    48KB

  • memory/5104-47-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB