Analysis

  • max time kernel
    97s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    04-07-2022 06:23

General

  • Target

    CV.exe

  • Size

    559KB

  • MD5

    3bbf14c6d3a535492bae4c32d890f931

  • SHA1

    e345246d1f217357f4e351ff68b7967252149795

  • SHA256

    10719517c091034e447d93a999e4797a32bdea3c651601ded9560fca01087cab

  • SHA512

    90750190857b8632894db2a9b1ec8c144f0397d048a3b0472f1835093831051fcf06e17c5d57e58fcd051d7546c76bed41484ffde9875b5bed7b44a94a32a98a

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 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CV.exe
    "C:\Users\Admin\AppData\Local\Temp\CV.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1528
    • C:\Users\Admin\AppData\Local\Temp\CV.exe
      "C:\Users\Admin\AppData\Local\Temp\CV.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:2012

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

  • memory/1528-54-0x0000000001040000-0x00000000010D2000-memory.dmp
    Filesize

    584KB

  • memory/1528-55-0x0000000075C51000-0x0000000075C53000-memory.dmp
    Filesize

    8KB

  • memory/1528-56-0x0000000000520000-0x0000000000536000-memory.dmp
    Filesize

    88KB

  • memory/1528-57-0x0000000000540000-0x0000000000556000-memory.dmp
    Filesize

    88KB

  • memory/1528-58-0x00000000007C0000-0x00000000007CA000-memory.dmp
    Filesize

    40KB

  • memory/1528-59-0x0000000005050000-0x00000000050CE000-memory.dmp
    Filesize

    504KB

  • memory/1528-60-0x0000000000D10000-0x0000000000D4A000-memory.dmp
    Filesize

    232KB

  • memory/2012-61-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2012-62-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2012-64-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2012-65-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2012-68-0x000000000041E792-mapping.dmp
  • memory/2012-67-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2012-70-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2012-72-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2012-74-0x0000000000350000-0x000000000035A000-memory.dmp
    Filesize

    40KB

  • memory/2012-75-0x0000000000360000-0x000000000037E000-memory.dmp
    Filesize

    120KB

  • memory/2012-76-0x0000000000380000-0x000000000038A000-memory.dmp
    Filesize

    40KB

  • memory/2012-77-0x00000000003F0000-0x0000000000402000-memory.dmp
    Filesize

    72KB

  • memory/2012-78-0x00000000005A0000-0x00000000005BA000-memory.dmp
    Filesize

    104KB

  • memory/2012-79-0x0000000000510000-0x000000000051E000-memory.dmp
    Filesize

    56KB

  • memory/2012-81-0x00000000005E0000-0x00000000005EE000-memory.dmp
    Filesize

    56KB

  • memory/2012-80-0x00000000005D0000-0x00000000005E2000-memory.dmp
    Filesize

    72KB

  • memory/2012-82-0x0000000000600000-0x000000000060C000-memory.dmp
    Filesize

    48KB

  • memory/2012-83-0x0000000000820000-0x0000000000834000-memory.dmp
    Filesize

    80KB

  • memory/2012-84-0x0000000000830000-0x0000000000840000-memory.dmp
    Filesize

    64KB

  • memory/2012-85-0x0000000000840000-0x0000000000854000-memory.dmp
    Filesize

    80KB

  • memory/2012-86-0x0000000000850000-0x000000000085E000-memory.dmp
    Filesize

    56KB

  • memory/2012-87-0x0000000000BE0000-0x0000000000C0E000-memory.dmp
    Filesize

    184KB

  • memory/2012-88-0x0000000000D30000-0x0000000000D44000-memory.dmp
    Filesize

    80KB