Analysis

  • max time kernel
    92s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25-05-2022 02:06

General

  • Target

    5d7f9aaf4634af11d07ba5c398ce11d8ce70d8ffcb9524d6ce64e8a5dba9dc89.exe

  • Size

    962KB

  • MD5

    7b310d5f1c2b88f3a22dadad63e77e61

  • SHA1

    9054764708a7a67c40e6fe3993c3971e3d477f20

  • SHA256

    5d7f9aaf4634af11d07ba5c398ce11d8ce70d8ffcb9524d6ce64e8a5dba9dc89

  • SHA512

    57f2b69f92e2b49c99a250669e44c9fa2c8a5cc99bda1b47322ee1bcdd09b3a9b107a636b4b0b7da9e0058492a8a4c0846ba1f5b1515cd9504cf074f9e6a1b4c

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\AEF946DCB4\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.6.0 ################################################################# ### Logger Details ### 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: 5/25/2022 4:25:43 AM MassLogger Started: 5/25/2022 4:25:32 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\5d7f9aaf4634af11d07ba5c398ce11d8ce70d8ffcb9524d6ce64e8a5dba9dc89.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.porathacorp.com
  • Port:
    587
  • Username:
    devarajan@porathacorp.com
  • Password:
    susila@22

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 15 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5d7f9aaf4634af11d07ba5c398ce11d8ce70d8ffcb9524d6ce64e8a5dba9dc89.exe
    "C:\Users\Admin\AppData\Local\Temp\5d7f9aaf4634af11d07ba5c398ce11d8ce70d8ffcb9524d6ce64e8a5dba9dc89.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:904
    • C:\Users\Admin\AppData\Local\Temp\5d7f9aaf4634af11d07ba5c398ce11d8ce70d8ffcb9524d6ce64e8a5dba9dc89.exe
      "{path}"
      2⤵
        PID:1836
      • C:\Users\Admin\AppData\Local\Temp\5d7f9aaf4634af11d07ba5c398ce11d8ce70d8ffcb9524d6ce64e8a5dba9dc89.exe
        "{path}"
        2⤵
          PID:692
        • C:\Users\Admin\AppData\Local\Temp\5d7f9aaf4634af11d07ba5c398ce11d8ce70d8ffcb9524d6ce64e8a5dba9dc89.exe
          "{path}"
          2⤵
          • Checks computer location settings
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:1176

      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/904-54-0x0000000000050000-0x0000000000146000-memory.dmp
        Filesize

        984KB

      • memory/904-55-0x00000000751C1000-0x00000000751C3000-memory.dmp
        Filesize

        8KB

      • memory/904-56-0x0000000000410000-0x0000000000418000-memory.dmp
        Filesize

        32KB

      • memory/904-57-0x0000000004B60000-0x0000000004C32000-memory.dmp
        Filesize

        840KB

      • memory/904-58-0x0000000007360000-0x000000000741C000-memory.dmp
        Filesize

        752KB

      • memory/1176-62-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-63-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-60-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-59-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-65-0x00000000004AC9EE-mapping.dmp
      • memory/1176-67-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-69-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-64-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-71-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-73-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-77-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-85-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-87-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-91-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-95-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-97-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-99-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-101-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-93-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-89-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-105-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-109-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-107-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-117-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-121-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-119-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-115-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-113-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-111-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-103-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-83-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-81-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-79-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-75-0x0000000000400000-0x00000000004B2000-memory.dmp
        Filesize

        712KB

      • memory/1176-586-0x0000000000890000-0x00000000008D4000-memory.dmp
        Filesize

        272KB

      • memory/1176-588-0x0000000004375000-0x0000000004386000-memory.dmp
        Filesize

        68KB

      • memory/1176-589-0x00000000021A0000-0x00000000021B4000-memory.dmp
        Filesize

        80KB