Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-10-2022 08:23

General

  • Target

    Oo1oWkdd1sWEXZi.exe

  • Size

    597KB

  • MD5

    eb2c8db75164f19db991a81d99fde8f2

  • SHA1

    8a2da583834198794fb8b4bd97b43e42bb64933c

  • SHA256

    dfe392c3a51b78b1249dfb572bf0fed754d0acfc1cffcb4e0e03bd2a80ad9d84

  • SHA512

    0c33fcb2a7f282ac85cee1eacfd2bbe1af6d40eaaaba26fffc6fbb6c5aa5b5b7b174450274e3353c763e30edc890616da079a113ce8e159212007e8b9b0b88c1

  • SSDEEP

    12288:iCl12iNTAyIPYuQgQv0aZSvhGp7Mz63gQZGeA0Jn+qBVMaG:rz1VduQgQvNZSv8pgz63gOpAAX8

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

godisgood1.hopto.org:7712

185.225.73.164:7712

Mutex

bcd7727e-ef56-4958-8ed9-949f5c5ea8f6

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    185.225.73.164

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-05-24T09:37:49.129028236Z

  • 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

    7712

  • 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

    bcd7727e-ef56-4958-8ed9-949f5c5ea8f6

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    godisgood1.hopto.org

  • 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.

  • 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
  • Checks whether UAC is enabled 1 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). Likely ransomware behaviour.

  • 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 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Oo1oWkdd1sWEXZi.exe
    "C:\Users\Admin\AppData\Local\Temp\Oo1oWkdd1sWEXZi.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:440
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pUrhgjGSiOBw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF9C6.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4204
    • C:\Users\Admin\AppData\Local\Temp\Oo1oWkdd1sWEXZi.exe
      "{path}"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1476
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DDP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8D9.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4192
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DDP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpEB6.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3188

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp8D9.tmp

    Filesize

    1KB

    MD5

    bee8e4d2a50179f9c6c214568e222ec5

    SHA1

    80e43e3b519d7e558b9e64e3252a42345c5eb9b5

    SHA256

    dd19708f6812d2da8602a8149fc43f7242ebc12b6ef87509e3ae444f9e277fb8

    SHA512

    70e516de7acc98c7a70dab129931019a8d8b522bf254d303bbb05e8137f82610a7f68cd02255c0a3bc8014793264756c169b0d07ac3b84d1b7781c19226d5f3d

  • C:\Users\Admin\AppData\Local\Temp\tmpEB6.tmp

    Filesize

    1KB

    MD5

    2271642ca970891700e3f48439739ed8

    SHA1

    cd472df2349f7db9e1e460d0ee28acd97b8a8793

    SHA256

    7aba66abbcb0b13455609174db23aed495a9adbef0e0acd28baa9c92445eda68

    SHA512

    4669a4ef8ec28cdb852ffc1401576b1bf9a9d837797d7d92bc88c18b3097404f36854e50167b309706fef400cabc43c876569ce2797ba85eb169a2783b8fe807

  • C:\Users\Admin\AppData\Local\Temp\tmpF9C6.tmp

    Filesize

    1KB

    MD5

    1a4cb0f90f966fe644651df6316e1e56

    SHA1

    650287bb8dc9bdc631318576ed5aed9bf2a25bca

    SHA256

    9698dcba9a4821257de3cb17032c927c934961dfc015283baaa75dd86b545850

    SHA512

    eba3b70142c27d272d9cccc8b31e7967dca71e3b78d6de85776381cf4f6ce4e1cc4eb74a5c97df5981c86ecda3a8b4d7d0e1e640fc87683b9aacf73ccc9360f9

  • memory/440-135-0x0000000005790000-0x000000000582C000-memory.dmp

    Filesize

    624KB

  • memory/440-136-0x00000000056D0000-0x00000000056DA000-memory.dmp

    Filesize

    40KB

  • memory/440-132-0x0000000000C00000-0x0000000000C9A000-memory.dmp

    Filesize

    616KB

  • memory/440-134-0x0000000005620000-0x00000000056B2000-memory.dmp

    Filesize

    584KB

  • memory/440-133-0x0000000005CA0000-0x0000000006244000-memory.dmp

    Filesize

    5.6MB

  • memory/1476-139-0x0000000000000000-mapping.dmp

  • memory/1476-140-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3188-143-0x0000000000000000-mapping.dmp

  • memory/4192-141-0x0000000000000000-mapping.dmp

  • memory/4204-137-0x0000000000000000-mapping.dmp