Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-08-2024 02:06

General

  • Target

    350d5e7320be3cf579bf1afacdbb46c0N.exe

  • Size

    506KB

  • MD5

    350d5e7320be3cf579bf1afacdbb46c0

  • SHA1

    f7220fb639e1c780f6ea23b1d657964f22bcf49a

  • SHA256

    f65d1cded5374ab70cfb0f316f045bc01a0f7dba4cb1cb1edf19a923282b525d

  • SHA512

    82d08ec44f4d8153ccdd42996604cf2ceab26c853d1a0b1a87257710b6ce115f9bde9dbd3ad93e54bed2f6337872fd877db994050926b0ff315f2bb7fa9ffdde

  • SSDEEP

    12288:0zQFwN0QMq3ZyMliWHt3hewrmrvTKdnMgmuCy:+QFmN3ZhlPt3hewyTK

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

savagesquad.ooguy.com:5314

Mutex

ffbf0a1f-4996-4697-ad52-3b9f73eda21c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2019-07-07T02:55:03.718306736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    5314

  • default_group

    FUD

  • 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

    ffbf0a1f-4996-4697-ad52-3b9f73eda21c

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    savagesquad.ooguy.com

  • primary_dns_server

  • 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 computer location settings 2 TTPs 1 IoCs

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

  • 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).

  • 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 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\350d5e7320be3cf579bf1afacdbb46c0N.exe
    "C:\Users\Admin\AppData\Local\Temp\350d5e7320be3cf579bf1afacdbb46c0N.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4992
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VsRwbjnFmPB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7E43.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1324
    • C:\Users\Admin\AppData\Local\Temp\350d5e7320be3cf579bf1afacdbb46c0N.exe
      "C:\Users\Admin\AppData\Local\Temp\350d5e7320be3cf579bf1afacdbb46c0N.exe"
      2⤵
      • Checks whether UAC is enabled
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:3060

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\350d5e7320be3cf579bf1afacdbb46c0N.exe.log

    Filesize

    588B

    MD5

    49461f799113a05a28d6b992090c22ce

    SHA1

    4049a26ca32ff9ed84fd748b75b36b73e17510ce

    SHA256

    efa0ab0bd196baf69522d0e11a8bb384a1f0e1806590db7b6ed34abcf6faf5c3

    SHA512

    dffd0fc9f13c5821f9a55bbfb0e1cb980b29903228805fda0331de68ef1ecfa7e716ebcb50c1a2429e5373f6c9e31977472e04769adf9feac8c7fe10f1814bc5

  • C:\Users\Admin\AppData\Local\Temp\tmp7E43.tmp

    Filesize

    1KB

    MD5

    6fdc6da05762a26f3ef1cd3283b47a72

    SHA1

    68e2780e8dfcf37796d7ef1287fd2559b3a50d8c

    SHA256

    99bdefc451c9ffad51d709944906ccc7c651c1e44e908bc40bc5f581651defbf

    SHA512

    3e07e3d22296c4ea70aced2793f036f1df8bdb4bdbb675551a15d213bd252175052c774777fab4f14d9f2598fb59e406a8bd09968d536e2ef6f8827b390f58bd

  • memory/3060-14-0x0000000074D60000-0x0000000075311000-memory.dmp

    Filesize

    5.7MB

  • memory/3060-10-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3060-15-0x0000000074D60000-0x0000000075311000-memory.dmp

    Filesize

    5.7MB

  • memory/3060-17-0x0000000074D60000-0x0000000075311000-memory.dmp

    Filesize

    5.7MB

  • memory/3060-18-0x0000000074D60000-0x0000000075311000-memory.dmp

    Filesize

    5.7MB

  • memory/3060-19-0x0000000074D60000-0x0000000075311000-memory.dmp

    Filesize

    5.7MB

  • memory/4992-3-0x0000000074D62000-0x0000000074D63000-memory.dmp

    Filesize

    4KB

  • memory/4992-4-0x0000000074D60000-0x0000000075311000-memory.dmp

    Filesize

    5.7MB

  • memory/4992-2-0x0000000074D60000-0x0000000075311000-memory.dmp

    Filesize

    5.7MB

  • memory/4992-1-0x0000000074D60000-0x0000000075311000-memory.dmp

    Filesize

    5.7MB

  • memory/4992-13-0x0000000074D60000-0x0000000075311000-memory.dmp

    Filesize

    5.7MB

  • memory/4992-0-0x0000000074D62000-0x0000000074D63000-memory.dmp

    Filesize

    4KB