Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    05-07-2022 02:18

General

  • Target

    Payment.exe

  • Size

    642KB

  • MD5

    c13fd617e3d71f62344df59f397b1270

  • SHA1

    9d771b382e9f505fd84a35876919ebfae6dc6343

  • SHA256

    de7bcd7ffa573ffb32e5523cdea0a0fa39bde98a4610f9e791720fa33bf7207a

  • SHA512

    7f24cabbf7420e92beeb95e486434d610b765c54eb8704b1171b6ce6b9c1e7a40cc887ae041eb6d345c49a43dbb991cda6cfc9119fcead62056ea76564dc36f1

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

derananocore.ddns.net:1187

194.87.84.118:1187

Mutex

aee28d0a-78bc-4586-8c8c-8f93e292a11b

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    194.87.84.118

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-04-09T10:37:01.806212736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1187

  • 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

    aee28d0a-78bc-4586-8c8c-8f93e292a11b

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    derananocore.ddns.net

  • 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

Signatures

  • NanoCore

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

  • suricata: ET MALWARE Possible NanoCore C2 60B

    suricata: ET MALWARE Possible NanoCore C2 60B

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3124
    • C:\Users\Admin\AppData\Local\Temp\Payment.exe
      "C:\Users\Admin\AppData\Local\Temp\Payment.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:3140

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Payment.exe.log
    Filesize

    1KB

    MD5

    fc57dcb1a143324278cf61d88f8c67ad

    SHA1

    807d546b4296091d11a8df6a11157a5f12dd7fd5

    SHA256

    a75686eed807c36b056311dddc898582fd4063135fc5728d2bdd3c6e1f5ab688

    SHA512

    33ac55a68ac8371bf00af55e38455e886dc6aa681388622a55bf4473b1f4eda4d75a8211ea61df288ccdb26e838785da08094a7f1aac878da6ccd2e573f3bcb8

  • memory/3124-130-0x0000000000D80000-0x0000000000E26000-memory.dmp
    Filesize

    664KB

  • memory/3124-131-0x0000000005E80000-0x0000000006424000-memory.dmp
    Filesize

    5.6MB

  • memory/3124-132-0x00000000057C0000-0x0000000005852000-memory.dmp
    Filesize

    584KB

  • memory/3124-133-0x0000000005870000-0x000000000587A000-memory.dmp
    Filesize

    40KB

  • memory/3124-134-0x0000000009700000-0x000000000979C000-memory.dmp
    Filesize

    624KB

  • memory/3124-135-0x0000000009840000-0x00000000098A6000-memory.dmp
    Filesize

    408KB

  • memory/3140-136-0x0000000000000000-mapping.dmp
  • memory/3140-137-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB