Overview

overview

10

Static

static

1

Payment Ad...DF.exe

windows7-x64

10

Payment Ad...DF.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    90s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/12/2022, 07:37

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    Payment Advice - Advice Ref A1T4C80vSIxi ACH credits Customer Ref1093817130 Second Party Ref128141001808.PDF.exe
  • Size 536KB
  • Sample221213-jftesagh7z
  • SHA256 d0fb8dde68fa31c19a906a06576f80ddab87d8247fcd6ba879840df4d517080f
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
nanocoreevasionkeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

  • nanocore

Version

  • 1.2.2.0

C2

  • svetanakravenova248.ddns.net:5634

Mutex

  • 28aa6c07-7c21-4208-97f7-23c9618edcb1

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    svetanakravenova248.ddns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-09-13T17:11:19.119527236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    5634

  • 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

    28aa6c07-7c21-4208-97f7-23c9618edcb1

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    svetanakravenova248.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.

    keyloggertrojanstealerspywarenanocore
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • 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). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment Advice - Advice Ref A1T4C80vSIxi ACH credits Customer Ref1093817130 Second Party Ref128141001808.PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Advice - Advice Ref A1T4C80vSIxi ACH credits Customer Ref1093817130 Second Party Ref128141001808.PDF.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1264
    • C:\Users\Admin\AppData\Local\Temp\eilcgysvar.exe
      "C:\Users\Admin\AppData\Local\Temp\eilcgysvar.exe" C:\Users\Admin\AppData\Local\Temp\qeezzbzjs.ywy
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2364
      • C:\Users\Admin\AppData\Local\Temp\eilcgysvar.exe
        "C:\Users\Admin\AppData\Local\Temp\eilcgysvar.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:1196

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        eilcgysvar.exe
        • Path C:\Users\Admin\AppData\Local\Temp\eilcgysvar.exe
        • Size 141KB
        • SHA256 e3aacc9d73d0b2641838536569637e68f64812f710993a41afc28241fde55519
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        eilcgysvar.exe
        • Path C:\Users\Admin\AppData\Local\Temp\eilcgysvar.exe
        • Size 141KB
        • SHA256 e3aacc9d73d0b2641838536569637e68f64812f710993a41afc28241fde55519
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        eilcgysvar.exe
        • Path C:\Users\Admin\AppData\Local\Temp\eilcgysvar.exe
        • Size 141KB
        • SHA256 e3aacc9d73d0b2641838536569637e68f64812f710993a41afc28241fde55519
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        qeezzbzjs.ywy
        • Path C:\Users\Admin\AppData\Local\Temp\qeezzbzjs.ywy
        • Size 7KB
        • SHA256 afcae0944bea93b853a1a7ae2750e4e16719dbed1116087ca22ce6600e1f767d
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        zprbkkzaop.ibi
        • Path C:\Users\Admin\AppData\Local\Temp\zprbkkzaop.ibi
        • Size 280KB
        • SHA256 842e7da3b57f67ef8851abb52bead9e8899c061d8003ce7df511bf668f29a420
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/1196-139-0x0000000000400000-0x000000000044A000-memory.dmp
        Download

        memory/1196-140-0x0000000004A40000-0x0000000004FE4000-memory.dmp
        Download

        memory/1196-141-0x0000000004980000-0x0000000004A12000-memory.dmp
        Download

        memory/1196-142-0x0000000005060000-0x00000000050FC000-memory.dmp
        Download

        memory/1196-143-0x0000000005170000-0x000000000517A000-memory.dmp
        Download

        memory/1196-144-0x00000000063F0000-0x0000000006456000-memory.dmp
        Download