General

  • Target

    2BAD850D4FC1355D5CBDEF48A773968DFD53BAE047865.exe

  • Size

    4.7MB

  • Sample

    221021-s7mkzshfhm

  • MD5

    4efc94d8768163a6e25a53e7d002e962

  • SHA1

    35bbd174ee8a9dc8b269b3bcb2ef42f468af6e43

  • SHA256

    2bad850d4fc1355d5cbdef48a773968dfd53bae047865fe20b131bcf854eb833

  • SHA512

    bafb841aeefc403984cf3236db92ee4a6e4cc0a5b772b7869bf3b604094db39323bb4315cd98a5832ba341023464717ecd9a30e66f62f1dd03ba0031944feb3b

  • SSDEEP

    98304:JAB7bQf3s64R9ybzUcwti78OqJ7TPBF3ZlHHgkWJ0P39qXSaDv:u7CzUcwti7TQlF3ZxxWJSUnDv

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

6.tcp.ngrok.io:16463

Mutex

5a49404a-bea8-4369-a3bc-4b84d110805c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    6.tcp.ngrok.io

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-06-03T21:54:46.634588736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    16463

  • 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

    5a49404a-bea8-4369-a3bc-4b84d110805c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    6.tcp.ngrok.io

  • 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

Targets

    • Target

      2BAD850D4FC1355D5CBDEF48A773968DFD53BAE047865.exe

    • Size

      4.7MB

    • MD5

      4efc94d8768163a6e25a53e7d002e962

    • SHA1

      35bbd174ee8a9dc8b269b3bcb2ef42f468af6e43

    • SHA256

      2bad850d4fc1355d5cbdef48a773968dfd53bae047865fe20b131bcf854eb833

    • SHA512

      bafb841aeefc403984cf3236db92ee4a6e4cc0a5b772b7869bf3b604094db39323bb4315cd98a5832ba341023464717ecd9a30e66f62f1dd03ba0031944feb3b

    • SSDEEP

      98304:JAB7bQf3s64R9ybzUcwti78OqJ7TPBF3ZlHHgkWJ0P39qXSaDv:u7CzUcwti7TQlF3ZxxWJSUnDv

    • Modifies Windows Defender Real-time Protection settings

    • Modifies security service

    • NanoCore

      NanoCore is a remote access tool (RAT) with a variety of capabilities.

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

2
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

3
T1112

Disabling Security Tools

1
T1089

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks