Analysis

  • max time kernel
    73s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 08:32

General

  • Target

    SecuriteInfo.com.Win32.PWSX-gen.23719.26078.exe

  • Size

    325KB

  • MD5

    fd3e30e6cc538bb462a2907e2372802d

  • SHA1

    815cbdc11aaaea43bc3fbac418afa420e38ebd43

  • SHA256

    09bb497c378ed884983055338dce20e8db38ed9b966da929b0f1d5d646a52808

  • SHA512

    114e1f4ba5a35ab5c1aafaf309e68b87dcef7297aab96c2d81ca6ae9073c3cc44b6ebdce39bd83743939c92f34f2c64338554f2659877892326c717ffd847e70

  • SSDEEP

    6144:5KgJA/UVYk+V8tHRLaam09031jpj8kIsjMUWCVdKrLuzGq:5K+dVYk+qjaR09031jpjOsjMNCi/vq

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

brewsterchristophe.ddns.net:5899

194,147,5,75:5899

Mutex

b8aebc29-8c64-444f-99e6-dc4122e9bbfc

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    194,147,5,75

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-04-29T03:26:40.572298236Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    5899

  • default_group

    Default

  • 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

    b8aebc29-8c64-444f-99e6-dc4122e9bbfc

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    brewsterchristophe.ddns.net

  • primary_dns_server

    8.8.8.8

  • 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.

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.23719.26078.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.23719.26078.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1576
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
      "Powershell" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.23719.26078.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Systhhbbem.exe'
      2⤵
      • Drops startup file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:568
    • 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:748
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "PCI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp840F.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:540
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "PCI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9CDD.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1664

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp840F.tmp

    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmp9CDD.tmp

    Filesize

    1KB

    MD5

    09063e7cc0d66a9aed53f2e2d2409103

    SHA1

    96f8fa15b5a3b2646f6691770a158c69ea7405a4

    SHA256

    369b159ef60c988373a3c85e0b10b5ff2178504465f11965ab0d66f14124f9a1

    SHA512

    c460a3cab70270c5cefe0464df6ddb9d50bb58ac9c49c7e62c9a55cc6bc30b6411cbc28ae418dd91b1ba1190f8394ccd937452ae70d7062740207d2ffc68e2ec

  • memory/540-73-0x0000000000000000-mapping.dmp

  • memory/568-72-0x0000000071B00000-0x00000000720AB000-memory.dmp

    Filesize

    5.7MB

  • memory/568-81-0x0000000071B00000-0x00000000720AB000-memory.dmp

    Filesize

    5.7MB

  • memory/568-56-0x0000000000000000-mapping.dmp

  • memory/748-65-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/748-79-0x0000000000470000-0x000000000047A000-memory.dmp

    Filesize

    40KB

  • memory/748-93-0x0000000001150000-0x0000000001164000-memory.dmp

    Filesize

    80KB

  • memory/748-66-0x000000000041E792-mapping.dmp

  • memory/748-70-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/748-68-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/748-62-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/748-60-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/748-59-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/748-92-0x0000000004880000-0x00000000048AE000-memory.dmp

    Filesize

    184KB

  • memory/748-91-0x0000000001080000-0x000000000108E000-memory.dmp

    Filesize

    56KB

  • memory/748-77-0x0000000000450000-0x000000000045A000-memory.dmp

    Filesize

    40KB

  • memory/748-78-0x00000000004C0000-0x00000000004DE000-memory.dmp

    Filesize

    120KB

  • memory/748-63-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/748-80-0x0000000004F25000-0x0000000004F36000-memory.dmp

    Filesize

    68KB

  • memory/748-90-0x0000000001070000-0x0000000001084000-memory.dmp

    Filesize

    80KB

  • memory/748-82-0x0000000000500000-0x0000000000512000-memory.dmp

    Filesize

    72KB

  • memory/748-83-0x00000000007B0000-0x00000000007CA000-memory.dmp

    Filesize

    104KB

  • memory/748-84-0x0000000000E00000-0x0000000000E0E000-memory.dmp

    Filesize

    56KB

  • memory/748-85-0x0000000000F20000-0x0000000000F32000-memory.dmp

    Filesize

    72KB

  • memory/748-86-0x0000000000F30000-0x0000000000F3E000-memory.dmp

    Filesize

    56KB

  • memory/748-87-0x0000000000F40000-0x0000000000F4C000-memory.dmp

    Filesize

    48KB

  • memory/748-88-0x0000000000F90000-0x0000000000FA4000-memory.dmp

    Filesize

    80KB

  • memory/748-89-0x0000000000FE0000-0x0000000000FF0000-memory.dmp

    Filesize

    64KB

  • memory/1576-55-0x0000000075C81000-0x0000000075C83000-memory.dmp

    Filesize

    8KB

  • memory/1576-57-0x0000000000200000-0x000000000021C000-memory.dmp

    Filesize

    112KB

  • memory/1576-54-0x0000000000350000-0x00000000003A6000-memory.dmp

    Filesize

    344KB

  • memory/1664-75-0x0000000000000000-mapping.dmp