Analysis

  • max time kernel
    39s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25-05-2022 00:42

General

  • Target

    6caef307fcb2d7cfdcf569e2e023cd333715be0a457ce9d686490be881900c6d.exe

  • Size

    587KB

  • MD5

    aa8c8d93529a2223e7e520bac4b1162e

  • SHA1

    6ebda446f500738099ddebdb2998209a86d3168c

  • SHA256

    6caef307fcb2d7cfdcf569e2e023cd333715be0a457ce9d686490be881900c6d

  • SHA512

    12d0b9e366ae8f35d9edfa1be5d78493d7520b404c55b5896f93fc03b0aee654dd3ab3abdde30b561514ad2fd8d2b16a54646eba5b9cf69f1960049cdd0c0955

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\8506BBE7FF\Log.txt

Family

masslogger

Ransom Note
<|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.13 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/25/2022 2:45:19 AM MassLogger Started: 5/25/2022 2:45:04 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\6caef307fcb2d7cfdcf569e2e023cd333715be0a457ce9d686490be881900c6d.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| USB Spread ||> Disabled <|| Downloader ||> Disabled <|| Bot Killer ||> Disabled <|| Window Searcher ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> Disabled

Signatures

  • MassLogger

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

  • 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 35 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 behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6caef307fcb2d7cfdcf569e2e023cd333715be0a457ce9d686490be881900c6d.exe
    "C:\Users\Admin\AppData\Local\Temp\6caef307fcb2d7cfdcf569e2e023cd333715be0a457ce9d686490be881900c6d.exe"
    1⤵
    • Checks computer location settings
    • Accesses Microsoft Outlook profiles
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • outlook_office_path
    • outlook_win_path
    PID:1984

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1984-54-0x0000000001080000-0x000000000111A000-memory.dmp
    Filesize

    616KB

  • memory/1984-55-0x0000000000A60000-0x0000000000AA4000-memory.dmp
    Filesize

    272KB

  • memory/1984-56-0x00000000756E1000-0x00000000756E3000-memory.dmp
    Filesize

    8KB

  • memory/1984-57-0x0000000004CA5000-0x0000000004CB6000-memory.dmp
    Filesize

    68KB

  • memory/1984-58-0x0000000000EA0000-0x0000000000EB4000-memory.dmp
    Filesize

    80KB