Analysis

  • max time kernel
    123s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    11-05-2022 14:08

General

  • Target

    eff032aac3bd1383f47cbba29306f786b2fa93c66ff7b71874fdd78938188f5f.exe

  • Size

    1.2MB

  • MD5

    72612c0ae5454485e2c5201555673ccc

  • SHA1

    6d7e8a9e95aa3eab29be870aa05eb5d4d787085a

  • SHA256

    eff032aac3bd1383f47cbba29306f786b2fa93c66ff7b71874fdd78938188f5f

  • SHA512

    6b998f4730b8c2bbf707c60b68713ebac5a54d762a5c09fc12ba28abcb1ecaa00a4ba198ebbf88ab9602e2567dc0e5491b9fec915223862e0747428fbca545a2

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note
<|| v2.4.0.0 ||> 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: 5/11/2022 4:31:45 PM MassLogger Started: 5/11/2022 4:31:32 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\eff032aac3bd1383f47cbba29306f786b2fa93c66ff7b71874fdd78938188f5f.exe MassLogger Melt: false MassLogger Exit after delivery: true As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\eff032aac3bd1383f47cbba29306f786b2fa93c66ff7b71874fdd78938188f5f.exe
    "C:\Users\Admin\AppData\Local\Temp\eff032aac3bd1383f47cbba29306f786b2fa93c66ff7b71874fdd78938188f5f.exe"
    1⤵
    • Checks computer location settings
    • Accesses Microsoft Outlook profiles
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • outlook_office_path
    • outlook_win_path
    PID:748

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/748-54-0x00000000009F0000-0x0000000000B38000-memory.dmp
    Filesize

    1.3MB

  • memory/748-55-0x0000000005BE0000-0x0000000005CBC000-memory.dmp
    Filesize

    880KB

  • memory/748-56-0x0000000000390000-0x0000000000398000-memory.dmp
    Filesize

    32KB

  • memory/748-57-0x00000000069C0000-0x0000000006A9A000-memory.dmp
    Filesize

    872KB

  • memory/748-58-0x0000000006C40000-0x0000000006CFA000-memory.dmp
    Filesize

    744KB

  • memory/748-59-0x0000000006D00000-0x0000000006DB8000-memory.dmp
    Filesize

    736KB

  • memory/748-60-0x0000000005A00000-0x0000000005A78000-memory.dmp
    Filesize

    480KB

  • memory/748-61-0x00000000061A5000-0x00000000061B6000-memory.dmp
    Filesize

    68KB