Analysis

  • max time kernel
    146s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    29/10/2022, 09:10

General

  • Target

    6d0e16a696f75f4189967dd79a7bfa083782dbe67f304b58844de65f2e5376dd.exe

  • Size

    223KB

  • MD5

    9b46248dc2f485ada038d2a9c08e2bfe

  • SHA1

    fb49bc36f45dc1601aae5f03e55de967d0bf9510

  • SHA256

    6d0e16a696f75f4189967dd79a7bfa083782dbe67f304b58844de65f2e5376dd

  • SHA512

    6766941a901c8e6a2a72cace6e30135ff28166c4518e0135ebc1abcf40c1b9775e3d77c4d48e7e7290baf20785f1b1a72f3070c4f28583c94a8d4b483b798348

  • SSDEEP

    6144:1cA0zUMatIMcN1wd0ClrkeCW3HHCfJLShBC:1cJzhayNwPCWeeB

Malware Config

Extracted

Family

nanocore

Version

1.2.2.2

C2

123ram777.no-ip.org:9045

mrlee0740.no-ip.org:9045

Mutex

169c9b38-e5d5-470a-a982-d094c796da58

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    mrlee0740.no-ip.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2015-04-28T15:09:58.917317836Z

  • 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

    9045

  • 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

    169c9b38-e5d5-470a-a982-d094c796da58

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    123ram777.no-ip.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

    1.2.2.2

  • wan_timeout

    8000

Signatures

  • NanoCore

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

  • Drops startup file 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6d0e16a696f75f4189967dd79a7bfa083782dbe67f304b58844de65f2e5376dd.exe
    "C:\Users\Admin\AppData\Local\Temp\6d0e16a696f75f4189967dd79a7bfa083782dbe67f304b58844de65f2e5376dd.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Users\Admin\AppData\Local\Temp\6d0e16a696f75f4189967dd79a7bfa083782dbe67f304b58844de65f2e5376dd.exe
      "C:\Users\Admin\AppData\Local\Temp\6d0e16a696f75f4189967dd79a7bfa083782dbe67f304b58844de65f2e5376dd.exe"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:268
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "AGP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9B66.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1144

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp9B66.tmp

    Filesize

    1KB

    MD5

    1312cbd6542f141dbf62af0536632d83

    SHA1

    f49a1536d0d250f08a4f7ef4864ca85637e87657

    SHA256

    a41c771700d1cf60a998135f53c1703fd654ef82b182be610107ab7853596b30

    SHA512

    5e6678e84aedf7ddb03ed4f71a115c3b5e2f4e7414ed2ab272db66550fe6fce1330e822771b4b96db8d4f9be6cd9775ac84e33e60e08970e4fda7b20f07b721e

  • \Users\Admin\AppData\Roaming\pFwLiiVlr\Kznz68mka.exe

    Filesize

    223KB

    MD5

    9b46248dc2f485ada038d2a9c08e2bfe

    SHA1

    fb49bc36f45dc1601aae5f03e55de967d0bf9510

    SHA256

    6d0e16a696f75f4189967dd79a7bfa083782dbe67f304b58844de65f2e5376dd

    SHA512

    6766941a901c8e6a2a72cace6e30135ff28166c4518e0135ebc1abcf40c1b9775e3d77c4d48e7e7290baf20785f1b1a72f3070c4f28583c94a8d4b483b798348

  • memory/268-64-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/268-59-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/268-58-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/268-61-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/268-62-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/268-74-0x0000000074030000-0x00000000745DB000-memory.dmp

    Filesize

    5.7MB

  • memory/268-73-0x0000000074030000-0x00000000745DB000-memory.dmp

    Filesize

    5.7MB

  • memory/268-67-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/268-69-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1204-55-0x0000000074030000-0x00000000745DB000-memory.dmp

    Filesize

    5.7MB

  • memory/1204-56-0x0000000074030000-0x00000000745DB000-memory.dmp

    Filesize

    5.7MB

  • memory/1204-54-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

    Filesize

    8KB