Analysis

  • max time kernel
    142s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    15-12-2024 15:59

General

  • Target

    f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe

  • Size

    873KB

  • MD5

    f4b7c7fd4a506534cd052fde285714cb

  • SHA1

    9d2abc759ce6f9f5eef3082258c9d742ac57b5bc

  • SHA256

    0e3d407a6703aa6daac111afc3ef6db70db97cc98bff8b33cc96d97d10a78cdf

  • SHA512

    ff127c0c8665a292448053eef48cb33016546dc51875c48c5ba1c618dd82fab9a4d7226260632dacf0d09796fed518a7e3e7c73abdfda75861d4a8991be217e5

  • SSDEEP

    24576:/kxpckImocfg6puArbvH+2UU7DnBnpx9eRRkBflmIlTVo:/opBeBOFpjcGBgaT

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.244.30.63:1916

127.0.0.1:1916

Mutex

bce1779d-9a41-430e-abc2-737cf5900556

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-05-21T21:52:34.187380636Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1916

  • default_group

    Nano

  • 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

    bce1779d-9a41-430e-abc2-737cf5900556

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    185.244.30.63

  • 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.

  • Nanocore family
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

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

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • 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 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2368
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZvYoLsHRg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp565A.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2788
    • C:\Users\Admin\AppData\Local\Temp\f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118.exe"
      2⤵
      • Checks whether UAC is enabled
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:2616

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp565A.tmp

    Filesize

    1KB

    MD5

    8b987d3d0542db02ccba9da5de735faf

    SHA1

    8dfa4fdc463cc400d058835704d24480ae4f8e09

    SHA256

    c31167a7ee236fbd4d50a711d2ac21ea29aa3f9df01c8eec59e070d94319e7dc

    SHA512

    f824f292842be682699b26b4f58891efda6a3f47f715ba4ae904ae4ce98aba9ffb18e66c4575dc0b38d70594baf18940dfc01270f64f05c7d7a82f5384a5f4fb

  • memory/2368-0-0x000000007463E000-0x000000007463F000-memory.dmp

    Filesize

    4KB

  • memory/2368-1-0x00000000010A0000-0x0000000001180000-memory.dmp

    Filesize

    896KB

  • memory/2368-2-0x0000000000E40000-0x0000000000EE2000-memory.dmp

    Filesize

    648KB

  • memory/2368-3-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2368-4-0x0000000000600000-0x0000000000616000-memory.dmp

    Filesize

    88KB

  • memory/2368-5-0x000000007463E000-0x000000007463F000-memory.dmp

    Filesize

    4KB

  • memory/2368-6-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2368-7-0x0000000006A20000-0x0000000006AC6000-memory.dmp

    Filesize

    664KB

  • memory/2368-8-0x0000000000A60000-0x0000000000A9A000-memory.dmp

    Filesize

    232KB

  • memory/2368-29-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2616-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2616-26-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2616-20-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2616-18-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2616-16-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2616-28-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2616-15-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2616-24-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2616-30-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2616-31-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2616-33-0x0000000000560000-0x000000000056A000-memory.dmp

    Filesize

    40KB

  • memory/2616-34-0x00000000006B0000-0x00000000006CE000-memory.dmp

    Filesize

    120KB

  • memory/2616-35-0x0000000000570000-0x000000000057A000-memory.dmp

    Filesize

    40KB

  • memory/2616-36-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2616-37-0x0000000074630000-0x0000000074D1E000-memory.dmp

    Filesize

    6.9MB