Analysis

  • max time kernel
    148s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-05-2024 01:34

General

  • Target

    1efe6215336d8fe3bda6202a6f63ff3d_JaffaCakes118.exe

  • Size

    220KB

  • MD5

    1efe6215336d8fe3bda6202a6f63ff3d

  • SHA1

    51fe8588665a74fabc6fa6bbd79dbdc898655a2a

  • SHA256

    c6d07585739fc43d3b149456c6cdb05229a476461f3471100f3da57c74a9ed2f

  • SHA512

    cd81ace56fc7f972c2a47cc9c9b17b4814e12e023df25eb3be43f51388f30cbd32c3a1c522780cbdade3deac9716b7c8244766246ce222c2d2c9d3ba1f821ce3

  • SSDEEP

    6144:cjimLQxsvx9S+8gGXowyltIccNhtPHXYPfGqflFtdRHY6j:cIix9S+rGowylbcNhxHXQtDdRHY6

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

127.0.0.1:1000

Mutex

c7b6ddda-5a09-4d57-a9dd-c2cd701a01a3

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2018-08-21T20:25:37.706060436Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    1000

  • 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

    c7b6ddda-5a09-4d57-a9dd-c2cd701a01a3

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

  • 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

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • NanoCore

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

  • Drops startup file 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1efe6215336d8fe3bda6202a6f63ff3d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\1efe6215336d8fe3bda6202a6f63ff3d_JaffaCakes118.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4016
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\CasPol.exe
      "\Windows\Microsoft.NET\Framework\v2.0.50727\CasPol.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:3212

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3212-9-0x00000000746D0000-0x0000000074C81000-memory.dmp

    Filesize

    5.7MB

  • memory/3212-11-0x00000000746D0000-0x0000000074C81000-memory.dmp

    Filesize

    5.7MB

  • memory/3212-18-0x00000000746D0000-0x0000000074C81000-memory.dmp

    Filesize

    5.7MB

  • memory/3212-17-0x00000000746D0000-0x0000000074C81000-memory.dmp

    Filesize

    5.7MB

  • memory/3212-16-0x00000000746D2000-0x00000000746D3000-memory.dmp

    Filesize

    4KB

  • memory/3212-7-0x00000000746D2000-0x00000000746D3000-memory.dmp

    Filesize

    4KB

  • memory/3212-6-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3212-8-0x00000000746D0000-0x0000000074C81000-memory.dmp

    Filesize

    5.7MB

  • memory/4016-1-0x000000001B450000-0x000000001B4F6000-memory.dmp

    Filesize

    664KB

  • memory/4016-0-0x00007FFCCD625000-0x00007FFCCD626000-memory.dmp

    Filesize

    4KB

  • memory/4016-5-0x00007FFCCD370000-0x00007FFCCDD11000-memory.dmp

    Filesize

    9.6MB

  • memory/4016-15-0x00007FFCCD370000-0x00007FFCCDD11000-memory.dmp

    Filesize

    9.6MB

  • memory/4016-4-0x00007FFCCD625000-0x00007FFCCD626000-memory.dmp

    Filesize

    4KB

  • memory/4016-3-0x00007FFCCD370000-0x00007FFCCDD11000-memory.dmp

    Filesize

    9.6MB

  • memory/4016-2-0x00007FFCCD370000-0x00007FFCCDD11000-memory.dmp

    Filesize

    9.6MB