Analysis

  • max time kernel
    91s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 01:51

General

  • Target

    AOS Neptune_028E.exe

  • Size

    868KB

  • MD5

    6113ddc1b5a8d0984b259768fa03a681

  • SHA1

    269592ed330417b87d325174e1a6ae180b0a4243

  • SHA256

    cc9cd3fab00a7ca68c26cbf9bfcf691aafd004232149c04d2d082a1fe06b9f32

  • SHA512

    7ef9de0d9952af32c408040920cb94445b4c166d33a8c25247cd28b75bce6360511f7fdc0954082f43202e2ba9bf0c1ba448df67876808c949c016d08c19e289

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\0F48153F20\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.6.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 10 Pro64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 2:47:47 AM MassLogger Started: 5/21/2022 2:47:44 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\AOS Neptune_028E.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    y8wG[wgBvT]F

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 32 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 18 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AOS Neptune_028E.exe
    "C:\Users\Admin\AppData\Local\Temp\AOS Neptune_028E.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Users\Admin\AppData\Local\Temp\AOS Neptune_028E.exe
      "{path}"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:992

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\AOS Neptune_028E.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/992-163-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-193-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-653-0x0000000007380000-0x00000000073D0000-memory.dmp

    Filesize

    320KB

  • memory/992-652-0x0000000005930000-0x0000000005996000-memory.dmp

    Filesize

    408KB

  • memory/992-135-0x0000000000000000-mapping.dmp

  • memory/992-136-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-161-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-139-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-141-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-143-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-145-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-147-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-149-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-151-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-153-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-155-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-157-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-165-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-199-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-197-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-159-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-167-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-169-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-171-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-173-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-175-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-177-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-179-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-181-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-183-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-185-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-187-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-189-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-191-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/992-195-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1204-130-0x00000000000B0000-0x0000000000190000-memory.dmp

    Filesize

    896KB

  • memory/1204-132-0x0000000004B90000-0x0000000004C22000-memory.dmp

    Filesize

    584KB

  • memory/1204-131-0x00000000050A0000-0x0000000005644000-memory.dmp

    Filesize

    5.6MB

  • memory/1204-134-0x00000000084C0000-0x000000000855C000-memory.dmp

    Filesize

    624KB

  • memory/1204-133-0x0000000004B20000-0x0000000004B2A000-memory.dmp

    Filesize

    40KB