Analysis

  • max time kernel
    144s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-07-2024 11:13

General

  • Target

    3d248944ca3304d6c97ab8b934c869d2_JaffaCakes118.exe

  • Size

    315KB

  • MD5

    3d248944ca3304d6c97ab8b934c869d2

  • SHA1

    04b032186ecd5b3099c54bd2eec6e8c7a5fdffff

  • SHA256

    5b5a0f32647df552d3337225f9cb3467844987d1ffaeddcf190f524b097abc13

  • SHA512

    8d556ada681e26418a06214725ebf5647035253b9085f1a3186171e162d8dd10d11d75c3cc943a562de526739556ff5ce83fdffb5017dd2261a83710ccd3342c

  • SSDEEP

    6144:gf5yfbYDms7zY0U5T1tiXt7Mey/oRbw5o07L26:45dDmj55T1gZy/N5o0XJ

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

wumpwifi.onthewifi.com:2017

185.56.90.77:2017

Mutex

023952f5-9a94-49ae-b9eb-3069891b2f3b

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    185.56.90.77

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2018-01-28T00:48:54.002261736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    2017

  • default_group

    Thai Beverage

  • 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

    023952f5-9a94-49ae-b9eb-3069891b2f3b

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    wumpwifi.onthewifi.com

  • 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
  • Executes dropped EXE 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).

  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3d248944ca3304d6c97ab8b934c869d2_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\3d248944ca3304d6c97ab8b934c869d2_JaffaCakes118.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3664
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3632
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v Load /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\Skyppe\Skyppe update.exe.lnk" /f
        3⤵
          PID:1196
      • C:\Users\Admin\AppData\Local\Temp\svhost.exe
        "C:\Users\Admin\AppData\Local\Temp\svhost.exe"
        2⤵
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:4664

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\svhost.exe
      Filesize

      89KB

      MD5

      84c42d0f2c1ae761bef884638bc1eacd

      SHA1

      4353881e7f4e9c7610f4e0489183b55bb58bb574

      SHA256

      331487446653875bf1e628b797a5283e40056654f7ff328eafbe39b0304480d3

      SHA512

      43c307a38faa3a4b311597034cf75035a4434a1024d2a54e867e6a94b53b677898d71a858438d119000e872a7a6e92c5b31d277a8c207a94375ed4fd3c7beb87

    • memory/3664-0-0x0000000074412000-0x0000000074413000-memory.dmp
      Filesize

      4KB

    • memory/3664-1-0x0000000074410000-0x00000000749C1000-memory.dmp
      Filesize

      5.7MB

    • memory/3664-2-0x0000000074410000-0x00000000749C1000-memory.dmp
      Filesize

      5.7MB

    • memory/3664-22-0x0000000074410000-0x00000000749C1000-memory.dmp
      Filesize

      5.7MB

    • memory/4664-11-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/4664-14-0x0000000074410000-0x00000000749C1000-memory.dmp
      Filesize

      5.7MB

    • memory/4664-16-0x0000000074410000-0x00000000749C1000-memory.dmp
      Filesize

      5.7MB

    • memory/4664-15-0x0000000074410000-0x00000000749C1000-memory.dmp
      Filesize

      5.7MB

    • memory/4664-20-0x0000000074410000-0x00000000749C1000-memory.dmp
      Filesize

      5.7MB

    • memory/4664-23-0x0000000074410000-0x00000000749C1000-memory.dmp
      Filesize

      5.7MB

    • memory/4664-24-0x0000000074410000-0x00000000749C1000-memory.dmp
      Filesize

      5.7MB