Analysis

  • max time kernel
    141s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-07-2024 01:57

General

  • Target

    3fbf4f14ff480243f53b0477defd3995_JaffaCakes118.exe

  • Size

    913KB

  • MD5

    3fbf4f14ff480243f53b0477defd3995

  • SHA1

    d178ff6dc580c833f91786c8783dd250cbce2b82

  • SHA256

    cc18b66023cf4fbe41954d1b2e5cc60604692ea30ad3defb5f80338263be2460

  • SHA512

    fca674a5101e06920d27554332068beecefb15f48cb1fddf00134a49525f0e8098f1b75fee7a4f13d90279c64ec68d51fac8eabfda4352798ff0f67151dac738

  • SSDEEP

    24576:uzS1ZKZRQVusF2xRzNCqYcW+ZPXtwuBLfjJMvNZVMO1:OOcZRQ8JC/3qXzjOvNnMO1

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

ericfresh.ddns.net:5050

194.5.98.231:5050

Mutex

1cc63107-cf54-416d-8fa1-7e896d8292b1

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    194.5.98.231

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-11-01T16:21:10.866219736Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    5050

  • default_group

    ERICFRESH

  • 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

    1cc63107-cf54-416d-8fa1-7e896d8292b1

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    ericfresh.ddns.net

  • 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.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3fbf4f14ff480243f53b0477defd3995_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\3fbf4f14ff480243f53b0477defd3995_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1504
    • C:\Users\Admin\AppData\Local\Temp\3fbf4f14ff480243f53b0477defd3995_JaffaCakes118.exe
      "{path}"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2624
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "AGP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE0DA.tmp"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2868

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\3fbf4f14ff480243f53b0477defd3995_JaffaCakes118.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\tmpE0DA.tmp

    Filesize

    1KB

    MD5

    27bda92b7c2570646e2c6409a5120cf9

    SHA1

    874d50950a579a580cefab51107dd8fcc9ee518a

    SHA256

    bd7cd2b5e0dac58ed92e38127028387af636a08f1eb9ce539596cd2cb7fdcc9d

    SHA512

    025b97b3048b8c9912e166308eb235a25da26c4aeed5569d875a96e2825e05b443faf881d7a7af7b9a3ac44152226f8fffbfdd2624f0abc830887efef3d03a12

  • memory/1504-10-0x000000000AB90000-0x000000000AC2C000-memory.dmp

    Filesize

    624KB

  • memory/1504-2-0x00000000081C0000-0x0000000008764000-memory.dmp

    Filesize

    5.6MB

  • memory/1504-4-0x0000000003110000-0x000000000311A000-memory.dmp

    Filesize

    40KB

  • memory/1504-5-0x0000000074F00000-0x00000000756B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1504-6-0x0000000007E20000-0x0000000007E2A000-memory.dmp

    Filesize

    40KB

  • memory/1504-7-0x0000000074F0E000-0x0000000074F0F000-memory.dmp

    Filesize

    4KB

  • memory/1504-8-0x0000000074F00000-0x00000000756B0000-memory.dmp

    Filesize

    7.7MB

  • memory/1504-9-0x000000000AA50000-0x000000000AAEC000-memory.dmp

    Filesize

    624KB

  • memory/1504-0-0x0000000074F0E000-0x0000000074F0F000-memory.dmp

    Filesize

    4KB

  • memory/1504-3-0x0000000007CD0000-0x0000000007D62000-memory.dmp

    Filesize

    584KB

  • memory/1504-1-0x0000000000D70000-0x0000000000E5A000-memory.dmp

    Filesize

    936KB

  • memory/1504-14-0x0000000074F00000-0x00000000756B0000-memory.dmp

    Filesize

    7.7MB

  • memory/2624-11-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2624-16-0x0000000074F00000-0x00000000756B0000-memory.dmp

    Filesize

    7.7MB

  • memory/2624-15-0x0000000074F00000-0x00000000756B0000-memory.dmp

    Filesize

    7.7MB

  • memory/2624-21-0x00000000055E0000-0x00000000055EA000-memory.dmp

    Filesize

    40KB

  • memory/2624-22-0x0000000005800000-0x000000000581E000-memory.dmp

    Filesize

    120KB

  • memory/2624-23-0x0000000006730000-0x000000000673A000-memory.dmp

    Filesize

    40KB

  • memory/2624-24-0x0000000074F00000-0x00000000756B0000-memory.dmp

    Filesize

    7.7MB

  • memory/2624-25-0x0000000074F00000-0x00000000756B0000-memory.dmp

    Filesize

    7.7MB