General

  • Target

    8XN2B1_Payment_Receipt.vbs

  • Size

    552B

  • Sample

    211129-yptjgacfdr

  • MD5

    7578770adaa094d49594be394effcb3b

  • SHA1

    8d919e1d10a590babbb1e88707f41b5653080cba

  • SHA256

    a9459089985852c3661d048010c4661523b904cd94f31fb245ca7d75ab220532

  • SHA512

    363d36082d2be9e50ee113e7061ae1ecbd1096ab21d71e900281d94f7bfc34a546e3e15b42a95f03542dd8ceed0c0d6ce22ed36c7afba4e6344cdeeffc03593a

Malware Config

Extracted

Family

njrat

Version

1.9

Botnet

HacKed

Mutex

Microsoft.Exe

Attributes
  • reg_key

    Microsoft.Exe

Extracted

Family

nanocore

Version

1.2.2.0

C2

jamcav.duckdns.org:6746

Mutex

9bb8b571-1a08-4fb2-8447-a1da0968f2fa

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    jamcav.duckdns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-08-20T15:54:30.577245636Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    6746

  • default_group

    jam

  • 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

    9bb8b571-1a08-4fb2-8447-a1da0968f2fa

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    jamcav.duckdns.org

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Targets

    • Target

      8XN2B1_Payment_Receipt.vbs

    • Size

      552B

    • MD5

      7578770adaa094d49594be394effcb3b

    • SHA1

      8d919e1d10a590babbb1e88707f41b5653080cba

    • SHA256

      a9459089985852c3661d048010c4661523b904cd94f31fb245ca7d75ab220532

    • SHA512

      363d36082d2be9e50ee113e7061ae1ecbd1096ab21d71e900281d94f7bfc34a546e3e15b42a95f03542dd8ceed0c0d6ce22ed36c7afba4e6344cdeeffc03593a

    • BitRAT

      BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

    • BitRAT Payload

    • NanoCore

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

    • njRAT/Bladabindi

      Widely used RAT written in .NET.

    • suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

      suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

    • suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)

      suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)

    • suricata: ET MALWARE Possible NanoCore C2 60B

      suricata: ET MALWARE Possible NanoCore C2 60B

    • Blocklisted process makes network request

    • Modifies Windows Firewall

    • UPX packed file

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

    • Adds Run key to start application

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Tasks