Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-05-2024 12:49

General

  • Target

    17be2ac55cbe59518142b65a45f3c843_JaffaCakes118.exe

  • Size

    941KB

  • MD5

    17be2ac55cbe59518142b65a45f3c843

  • SHA1

    1b300ed88094e236d4da80d3ca9392adb151a99c

  • SHA256

    08ece3e8398eb5fa03b77aa3e34888dc57aca623449a3dd99bdeb921f7496bb6

  • SHA512

    2069bf5d7e3b381dee9204ae316b9b105930bd515a1b18a226ac06f3829318cb36dad42a9d7b4e79ba31693a9111d3f0310ad4fac71c2233193a6ac44412f296

  • SSDEEP

    3072:Eyvghdg5tcvQ8KmtyfuK4MG7sXgcDU1M93RTiWp2+pt0ajjI0hOTM6yr2rFP0oBd:/LkvxjyH4PQ93A+c6jIvM6uSFP6

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

sealpage.servepics.com:8443

Mutex

8b193074-55e7-422d-8e72-a7a8c491e038

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    sealpage.servepics.com

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2018-07-22T17:24:02.091657736Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8443

  • 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

    8b193074-55e7-422d-8e72-a7a8c491e038

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

  • primary_dns_server

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    false

  • 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.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 3 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\17be2ac55cbe59518142b65a45f3c843_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\17be2ac55cbe59518142b65a45f3c843_JaffaCakes118.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2492
    • C:\Users\Admin\AppData\Local\Temp\syhost.exe
      "C:\Users\Admin\AppData\Local\Temp\syhost.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1660
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3DD4.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3428
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3E33.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:5248

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\syhost.exe

    Filesize

    89KB

    MD5

    84c42d0f2c1ae761bef884638bc1eacd

    SHA1

    4353881e7f4e9c7610f4e0489183b55bb58bb574

    SHA256

    331487446653875bf1e628b797a5283e40056654f7ff328eafbe39b0304480d3

    SHA512

    43c307a38faa3a4b311597034cf75035a4434a1024d2a54e867e6a94b53b677898d71a858438d119000e872a7a6e92c5b31d277a8c207a94375ed4fd3c7beb87

  • C:\Users\Admin\AppData\Local\Temp\tmp3DD4.tmp

    Filesize

    1KB

    MD5

    cbcdc0b2715b9af7f0112d4fbfff39a8

    SHA1

    d60c5de8b75de63dcbe673310cc59230944e65fa

    SHA256

    6b358cc2afb30aba70b4c174c3b52daa230ef6f0287948cb47c49d8310e18fe4

    SHA512

    4d8089cde29084ea5a5c93ed00059e93ae4f2a2ce7d3cd6eea0e8bf86e9e72761b9b19d7b5e9c9659fbd5c44f102e4a6eefda45f90c1b473b5b630bddf95d30c

  • C:\Users\Admin\AppData\Local\Temp\tmp3E33.tmp

    Filesize

    1KB

    MD5

    a246b3561d823177f3586e629f144233

    SHA1

    0f05d12e55a1d2e5e6a4f307c193882fba093315

    SHA256

    6abae7707b06e52b58f537b335e367cc54b093e899d78f16e94ceaf7ceafca52

    SHA512

    4246aa9a96331e2c7e36b37fa778e31ecae055c77164e0dc673aa50cdec368f08d356ab06ef1a4540816c474828048ab1bebed7e211a4eb929f2918e1fac9c6d

  • memory/1660-7-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1660-10-0x0000000075530000-0x0000000075AE1000-memory.dmp

    Filesize

    5.7MB

  • memory/1660-11-0x0000000075530000-0x0000000075AE1000-memory.dmp

    Filesize

    5.7MB

  • memory/1660-12-0x0000000075530000-0x0000000075AE1000-memory.dmp

    Filesize

    5.7MB

  • memory/1660-20-0x0000000075530000-0x0000000075AE1000-memory.dmp

    Filesize

    5.7MB

  • memory/1660-23-0x0000000075530000-0x0000000075AE1000-memory.dmp

    Filesize

    5.7MB

  • memory/1660-24-0x0000000075530000-0x0000000075AE1000-memory.dmp

    Filesize

    5.7MB

  • memory/2492-0-0x0000000075532000-0x0000000075533000-memory.dmp

    Filesize

    4KB

  • memory/2492-2-0x0000000075530000-0x0000000075AE1000-memory.dmp

    Filesize

    5.7MB

  • memory/2492-1-0x0000000075530000-0x0000000075AE1000-memory.dmp

    Filesize

    5.7MB

  • memory/2492-22-0x0000000075530000-0x0000000075AE1000-memory.dmp

    Filesize

    5.7MB