General

  • Target

    INV3677290.xlsx

  • Size

    598KB

  • Sample

    200630-4a7357y57j

  • MD5

    557d7d397e7566fde718dd615add8e67

  • SHA1

    9ee2b02b3bc95d1ecaf9699198474e63c7b6d367

  • SHA256

    3c321c5bdc82d554ea695bb5927a9c23ffa7dd9301fabc68981ad4e0ac956a51

  • SHA512

    64ebf2803477edf7ccd614d286cbef6f3f7604b4f60de89f5a7a96199e44b4ddb19543dde3663b6080ab60f93185ccd3b40c7295a0e073188a28614f697eff14

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

mogs20.hopto.org:1085

185.244.30.251:1085

Mutex

1c8e1b25-da1c-4b7f-872b-7991ecf830f7

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    185.244.30.251

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-03-26T22:47:50.934251036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1085

  • default_group

    ANGEL RAPHAEL

  • 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

    1c8e1b25-da1c-4b7f-872b-7991ecf830f7

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    mogs20.hopto.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

      INV3677290.xlsx

    • Size

      598KB

    • MD5

      557d7d397e7566fde718dd615add8e67

    • SHA1

      9ee2b02b3bc95d1ecaf9699198474e63c7b6d367

    • SHA256

      3c321c5bdc82d554ea695bb5927a9c23ffa7dd9301fabc68981ad4e0ac956a51

    • SHA512

      64ebf2803477edf7ccd614d286cbef6f3f7604b4f60de89f5a7a96199e44b4ddb19543dde3663b6080ab60f93185ccd3b40c7295a0e073188a28614f697eff14

    • NanoCore

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

    • Blacklisted process makes network request

    • Executes dropped EXE

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • Adds Run entry to start application

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Exploitation for Client Execution

1
T1203

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Scripting

1
T1064

Modify Registry

1
T1112

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Tasks