Analysis

  • max time kernel
    150s
  • max time network
    99s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 16:14

General

  • Target

    bf54b77c214eb42b2e8b4972caa2ca0501a4f80ce010123f16d62bb9175e0c1e.exe

  • Size

    832KB

  • MD5

    2425d035be1c4323d4955cbada9a45bb

  • SHA1

    8679481c5af7ffa6a6f94300a5f1639525f5dd8d

  • SHA256

    bf54b77c214eb42b2e8b4972caa2ca0501a4f80ce010123f16d62bb9175e0c1e

  • SHA512

    09206c50fa794c3acd946a537eff34c4602cf2ee275be66bcc5673f5a1026d4932548f6d51dc21fd233474519454a9a365999016cff12642dd858ac8e58a8e25

  • SSDEEP

    12288:wR6fOyrH84cJN7DZqhyeO/1ng5HpEPUaSrOIFbIS6wU18XdREfLv+3oCpN558k:vfOOH8zj8UePEP0CIhIS64dRt31558k

Malware Config

Extracted

Family

nanocore

Version

1.2.1.1

C2

jesusfountain.redirectme.net:54557

Mutex

93e4b02c-abdc-4e66-ae1c-828d68851ee9

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2014-10-21T10:21:59.185241736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    54557

  • default_group

    Project School

  • 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

    93e4b02c-abdc-4e66-ae1c-828d68851ee9

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    jesusfountain.redirectme.net

  • primary_dns_server

  • 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

    1.2.1.1

  • wan_timeout

    8000

Signatures

  • NanoCore

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 39 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf54b77c214eb42b2e8b4972caa2ca0501a4f80ce010123f16d62bb9175e0c1e.exe
    "C:\Users\Admin\AppData\Local\Temp\bf54b77c214eb42b2e8b4972caa2ca0501a4f80ce010123f16d62bb9175e0c1e.exe"
    1⤵
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1492
    • C:\Users\Admin\AppData\Local\Temp\bf54b77c214eb42b2e8b4972caa2ca0501a4f80ce010123f16d62bb9175e0c1e.exe
      "C:\Users\Admin\AppData\Local\Temp\bf54b77c214eb42b2e8b4972caa2ca0501a4f80ce010123f16d62bb9175e0c1e.exe"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1356

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Discovery

System Information Discovery

2
T1082

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1356-60-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/1356-57-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/1356-58-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/1356-61-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/1356-63-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/1356-64-0x000000000041EDAE-mapping.dmp
  • memory/1356-66-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/1356-68-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/1356-70-0x0000000074F30000-0x00000000754DB000-memory.dmp
    Filesize

    5.7MB

  • memory/1356-71-0x0000000074F30000-0x00000000754DB000-memory.dmp
    Filesize

    5.7MB

  • memory/1492-55-0x0000000074F30000-0x00000000754DB000-memory.dmp
    Filesize

    5.7MB

  • memory/1492-56-0x0000000074F30000-0x00000000754DB000-memory.dmp
    Filesize

    5.7MB

  • memory/1492-54-0x0000000076BA1000-0x0000000076BA3000-memory.dmp
    Filesize

    8KB