Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-07-2024 00:43

General

  • Target

    2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe

  • Size

    416KB

  • MD5

    2e8da64c68d2020b127637af76999eae

  • SHA1

    576a0e6b2ad0d3683982f9ed380f50020f851fb2

  • SHA256

    39609f52c5351fcce7e031a6c0c43bbb32899d3a23204cec330f97cc05c602bb

  • SHA512

    c142f053d074a7a1f426779b6bdc4f6d249eb85d2dedc9a49114ebd4180369389ba66dde3bd93dc842e164131e862aa1c65db2824e26672337ed975caf7a0e59

  • SSDEEP

    12288:xQe926EQ2q+MpWBbDu9SkDNhSt6GR0CoFbJ30rPdQuo:3ppW10NhSRRgb6rPd

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

owens.ddns.net:4040

Mutex

e8fc5dec-c000-4a89-a1aa-ebb0418b2e71

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2017-09-02T02:48:13.513691336Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    4040

  • default_group

    Nov 2017

  • 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

    e8fc5dec-c000-4a89-a1aa-ebb0418b2e71

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    owens.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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1584
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\2e8da64c68d2020b127637af76999eae_JaffaCakes118.exe" "C:\Users\Admin\AppData\Local\winlogins.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:744
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Local\winlogins.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1524
      • C:\Users\Admin\AppData\Local\winlogins.exe
        "C:\Users\Admin\AppData\Local\winlogins.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4500
        • C:\Users\Admin\AppData\Local\winlogins.exe
          "C:\Users\Admin\AppData\Local\winlogins.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Drops file in Program Files directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:4408

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\winlogins.exe.log

    Filesize

    706B

    MD5

    0110f3d722cddd9753644c78a308ff57

    SHA1

    c461bb3812ae8a3c77d0ec99850b3a88eda2ccc7

    SHA256

    03c3a90b4c2615ddd7bc4b663ba3cce4969223c0a21c53624c6f792ffde91de4

    SHA512

    8a581416a1a9e355e6cda1d4f2a93df807421ec2706c717c5d5d2acd004af2c14ee77d94c48e6643320dd2cd2e1072b9cfd8ecf37c0e8fb38df7d9f0c40cdf63

  • C:\Users\Admin\AppData\Local\winlogins.exe

    Filesize

    416KB

    MD5

    2e8da64c68d2020b127637af76999eae

    SHA1

    576a0e6b2ad0d3683982f9ed380f50020f851fb2

    SHA256

    39609f52c5351fcce7e031a6c0c43bbb32899d3a23204cec330f97cc05c602bb

    SHA512

    c142f053d074a7a1f426779b6bdc4f6d249eb85d2dedc9a49114ebd4180369389ba66dde3bd93dc842e164131e862aa1c65db2824e26672337ed975caf7a0e59

  • memory/1584-6-0x0000000007A80000-0x0000000008024000-memory.dmp

    Filesize

    5.6MB

  • memory/1584-4-0x0000000007430000-0x00000000074C2000-memory.dmp

    Filesize

    584KB

  • memory/1584-1-0x0000000000450000-0x00000000004C2000-memory.dmp

    Filesize

    456KB

  • memory/1584-5-0x00000000750D0000-0x0000000075880000-memory.dmp

    Filesize

    7.7MB

  • memory/1584-0-0x00000000750DE000-0x00000000750DF000-memory.dmp

    Filesize

    4KB

  • memory/1584-7-0x00000000010A0000-0x00000000010AC000-memory.dmp

    Filesize

    48KB

  • memory/1584-10-0x00000000750DE000-0x00000000750DF000-memory.dmp

    Filesize

    4KB

  • memory/1584-11-0x00000000750D0000-0x0000000075880000-memory.dmp

    Filesize

    7.7MB

  • memory/1584-13-0x00000000750D0000-0x0000000075880000-memory.dmp

    Filesize

    7.7MB

  • memory/1584-2-0x00000000028B0000-0x00000000028F6000-memory.dmp

    Filesize

    280KB

  • memory/1584-3-0x0000000000DD0000-0x0000000000DF0000-memory.dmp

    Filesize

    128KB

  • memory/4408-32-0x0000000005B30000-0x0000000005B3A000-memory.dmp

    Filesize

    40KB

  • memory/4408-22-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/4408-27-0x00000000055C0000-0x00000000055CA000-memory.dmp

    Filesize

    40KB

  • memory/4408-30-0x0000000005890000-0x000000000589A000-memory.dmp

    Filesize

    40KB

  • memory/4408-31-0x0000000005B10000-0x0000000005B2E000-memory.dmp

    Filesize

    120KB

  • memory/4500-19-0x00000000750D0000-0x0000000075880000-memory.dmp

    Filesize

    7.7MB

  • memory/4500-20-0x00000000750D0000-0x0000000075880000-memory.dmp

    Filesize

    7.7MB

  • memory/4500-21-0x0000000007E80000-0x0000000007F1C000-memory.dmp

    Filesize

    624KB

  • memory/4500-18-0x00000000750D0000-0x0000000075880000-memory.dmp

    Filesize

    7.7MB

  • memory/4500-26-0x00000000750D0000-0x0000000075880000-memory.dmp

    Filesize

    7.7MB

  • memory/4500-17-0x00000000750D0000-0x0000000075880000-memory.dmp

    Filesize

    7.7MB