General

  • Target

    PO457812.exe

  • Size

    977KB

  • Sample

    200709-r1mnxng5d2

  • MD5

    e9be709ac260b6fee77c32cecdea793b

  • SHA1

    636738162a4b5d516c15689152a93dcb4475cef1

  • SHA256

    3ae8eb9d4bc0b3f87a57648f25938b346986101428a5ed2a3f6c6d68bd5f5b4d

  • SHA512

    745faa24e0987c9d87412eec42a24e3e3fe2d926884c9131cb0133a583c43ad486f94f87989f96ce1062bcfce10a50431a1e0bf82083d947fc9a5578cd2f18b9

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\C8A579F880\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.6.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.13 Location: United States Windows OS: Microsoft Windows 7 Professional 64bit Windows Serial Key: HYF8J-CVRMY-CM74G-RPHKF-PW487 CPU: Persocon Processor 2.5+ GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 7/9/2020 3:38:23 PM MassLogger Started: 7/9/2020 3:38:20 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\PO457812.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    jaffinmark@yandex.ru
  • Password:
    @jaffinmarknma@344

Targets

    • Target

      PO457812.exe

    • Size

      977KB

    • MD5

      e9be709ac260b6fee77c32cecdea793b

    • SHA1

      636738162a4b5d516c15689152a93dcb4475cef1

    • SHA256

      3ae8eb9d4bc0b3f87a57648f25938b346986101428a5ed2a3f6c6d68bd5f5b4d

    • SHA512

      745faa24e0987c9d87412eec42a24e3e3fe2d926884c9131cb0133a583c43ad486f94f87989f96ce1062bcfce10a50431a1e0bf82083d947fc9a5578cd2f18b9

    • MassLogger

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

    • MassLogger log file

      Detects a log file produced by MassLogger.

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Reads user/profile data of web browsers

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

    • Looks up external IP address via web service

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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

4
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Tasks