General

  • Target

    packs.zip

  • Size

    85.9MB

  • Sample

    230609-s2ctlace43

  • MD5

    be4bb766344987170ebd89c1beb5ad21

  • SHA1

    f8c58ed0d9278d96647ff0e265958d8223f784a2

  • SHA256

    80266abf7c6d6541542ea6893bd0b9769ef4cb8a883f33171ba808efe9a5099e

  • SHA512

    6b272e569ee02f440b8c4d8dbf309ef444877b483f434c82c771a78787131b221f2af91a9ed237ed27d43c017a8fbd32a0eded9f324d7b44842cc72014cba9f1

  • SSDEEP

    786432:nvCudIpEhlYXhlJlx2vJgahQmFKTmhlVmhl6hl+P1XEhkehZtN3+cJDhlQZohl7u:nv2/T8KP1XEF+cJcZAK9

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

Oranjun-60963.portmap.io:60963

127.0.0.1:60963

Mutex

6bda8f93-44d6-4376-9ae5-7bed6258711c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2019-03-13T20:16:30.682088336Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    60963

  • default_group

    Client

  • 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

    6bda8f93-44d6-4376-9ae5-7bed6258711c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    Oranjun-60963.portmap.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

      packs.zip

    • Size

      85.9MB

    • MD5

      be4bb766344987170ebd89c1beb5ad21

    • SHA1

      f8c58ed0d9278d96647ff0e265958d8223f784a2

    • SHA256

      80266abf7c6d6541542ea6893bd0b9769ef4cb8a883f33171ba808efe9a5099e

    • SHA512

      6b272e569ee02f440b8c4d8dbf309ef444877b483f434c82c771a78787131b221f2af91a9ed237ed27d43c017a8fbd32a0eded9f324d7b44842cc72014cba9f1

    • SSDEEP

      786432:nvCudIpEhlYXhlJlx2vJgahQmFKTmhlVmhl6hl+P1XEhkehZtN3+cJDhlQZohl7u:nv2/T8KP1XEF+cJcZAK9

    • NanoCore

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

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Registers COM server for autorun

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Change Default File Association

1
T1042

Registry Run Keys / Startup Folder

2
T1060

Hidden Files and Directories

1
T1158

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

3
T1112

Hidden Files and Directories

1
T1158

Discovery

Query Registry

7
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

7
T1082

Command and Control

Web Service

1
T1102

Tasks