Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01-12-2022 15:45

General

  • Target

    0a0671ce1039d895af0984a16b1f54ee.exe

  • Size

    809KB

  • MD5

    0a0671ce1039d895af0984a16b1f54ee

  • SHA1

    b85f0fcd100cda02d076f99b178d5c7546aacdbd

  • SHA256

    ccbaf764d75b62d77aaa93db6a20926161eba9762d398a53e3bebb007443edba

  • SHA512

    2a59aee635ff0353c86c6cba6f308844d669f9d576ad7d509ea17604e6b802e7ee4c13d028314b6011216027f09d2cce4482f4b075e8512a7de78936ecbb8825

  • SSDEEP

    12288:tOvuqJwk3uG9JwObO+92SmULZuZMh1AOn6PK7l9lLAgNB:TqJwk3uWlb/2UL0ZMh1A5PK7lHLA0

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

tzitziklishop.ddns.net:1665

127.0.0.1:1665

Mutex

54c43eb3-9a5e-48cf-bbb9-9a65e46643a1

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-09-09T09:23:36.606577636Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1665

  • default_group

    NOV282022

  • 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

    54c43eb3-9a5e-48cf-bbb9-9a65e46643a1

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    tzitziklishop.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.

  • 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
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0a0671ce1039d895af0984a16b1f54ee.exe
    "C:\Users\Admin\AppData\Local\Temp\0a0671ce1039d895af0984a16b1f54ee.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1344
    • C:\Users\Admin\AppData\Local\Temp\0a0671ce1039d895af0984a16b1f54ee.exe
      "C:\Users\Admin\AppData\Local\Temp\0a0671ce1039d895af0984a16b1f54ee.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1788
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5F50.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1124
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UDP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6173.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1044

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp5F50.tmp
    Filesize

    1KB

    MD5

    9ec73cb1a4bc5bb187faf1db725066e8

    SHA1

    0a0699887a8b72e369093640140697e42977ea5a

    SHA256

    be3ea046edb1cec6c8dc8302087eeaf684212c5fcb8546d5bf247ce75644b828

    SHA512

    b340640887d46fac1f1f61f1f7a146095d22ffe98f3ce9adf7e67441fe377f2176d63d08826eed2d21ae0d7f1d7eab93eab7f4c06a7baf8f01eef97f8ed2767b

  • C:\Users\Admin\AppData\Local\Temp\tmp6173.tmp
    Filesize

    1KB

    MD5

    0a24db62cb5b84309c4803346caaa25d

    SHA1

    67660778f61bb44168c33ed3fe56ed86cf9583e8

    SHA256

    38d38647af394a04ee6add9f05c43244f04e64a6b96257f4b241a5038efa82df

    SHA512

    d25d9df063f44595d5e0bf890755bd387655131ff369eeedf3d11ffcc6202ca4455bbb33a8a926dd06839cbd1ddec3d06809b3c66a82c6518aa14beaa469a548

  • memory/1044-75-0x0000000000000000-mapping.dmp
  • memory/1124-73-0x0000000000000000-mapping.dmp
  • memory/1344-59-0x0000000005270000-0x00000000052D0000-memory.dmp
    Filesize

    384KB

  • memory/1344-58-0x00000000051D0000-0x000000000526A000-memory.dmp
    Filesize

    616KB

  • memory/1344-55-0x0000000074F41000-0x0000000074F43000-memory.dmp
    Filesize

    8KB

  • memory/1344-56-0x0000000000540000-0x0000000000556000-memory.dmp
    Filesize

    88KB

  • memory/1344-57-0x00000000007A0000-0x00000000007AE000-memory.dmp
    Filesize

    56KB

  • memory/1344-54-0x00000000002D0000-0x00000000003A0000-memory.dmp
    Filesize

    832KB

  • memory/1788-64-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1788-67-0x000000000041E792-mapping.dmp
  • memory/1788-69-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1788-71-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1788-63-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1788-66-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1788-61-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1788-60-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1788-77-0x0000000000450000-0x000000000045A000-memory.dmp
    Filesize

    40KB

  • memory/1788-78-0x0000000000690000-0x00000000006AE000-memory.dmp
    Filesize

    120KB

  • memory/1788-79-0x0000000000460000-0x000000000046A000-memory.dmp
    Filesize

    40KB