Analysis

  • max time kernel
    100s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    24-05-2022 21:08

General

  • Target

    40396e0b47a75f9c6c49a7b1b0d4b71b4999c1ffbfc6c4053e7d5606de75169b.exe

  • Size

    673KB

  • MD5

    f4f631e39cbe07cd2c95f0095b50fb3d

  • SHA1

    b4921da5ae410b94e6c1c5087f0635a001875821

  • SHA256

    40396e0b47a75f9c6c49a7b1b0d4b71b4999c1ffbfc6c4053e7d5606de75169b

  • SHA512

    a76d6809ab4d798a12a55d260fc74cc2259aea73ae33137fc15c09e2064ffeb644d45115e4bce724110ae480b12bda6ff2643ca6ccc494039560c17adaae38c8

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\3B8E3C2477\Log.txt

Family

masslogger

Ransom Note
<|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.50 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: 5/24/2022 11:10:05 PM MassLogger Started: 5/24/2022 11:09:57 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\40396e0b47a75f9c6c49a7b1b0d4b71b4999c1ffbfc6c4053e7d5606de75169b.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

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    tonyrikardo@yandex.com
  • Password:
    akachukwu123@

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 use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40396e0b47a75f9c6c49a7b1b0d4b71b4999c1ffbfc6c4053e7d5606de75169b.exe
    "C:\Users\Admin\AppData\Local\Temp\40396e0b47a75f9c6c49a7b1b0d4b71b4999c1ffbfc6c4053e7d5606de75169b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1528
    • C:\Users\Admin\AppData\Local\Temp\40396e0b47a75f9c6c49a7b1b0d4b71b4999c1ffbfc6c4053e7d5606de75169b.exe
      "C:\Users\Admin\AppData\Local\Temp\40396e0b47a75f9c6c49a7b1b0d4b71b4999c1ffbfc6c4053e7d5606de75169b.exe"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1720

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/1528-54-0x0000000001320000-0x00000000013CE000-memory.dmp
    Filesize

    696KB

  • memory/1528-55-0x0000000075C51000-0x0000000075C53000-memory.dmp
    Filesize

    8KB

  • memory/1528-56-0x00000000002A0000-0x00000000002A8000-memory.dmp
    Filesize

    32KB

  • memory/1528-57-0x0000000005810000-0x00000000058B2000-memory.dmp
    Filesize

    648KB

  • memory/1720-58-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/1720-61-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/1720-62-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/1720-63-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/1720-64-0x000000000049479E-mapping.dmp
  • memory/1720-68-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/1720-66-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/1720-59-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/1720-69-0x00000000008A0000-0x00000000008E4000-memory.dmp
    Filesize

    272KB

  • memory/1720-71-0x0000000000ED5000-0x0000000000EE6000-memory.dmp
    Filesize

    68KB

  • memory/1720-72-0x00000000008F0000-0x0000000000904000-memory.dmp
    Filesize

    80KB