Analysis

  • max time kernel
    106s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 12:40

General

  • Target

    Scan_DSV_03072020_038465318631_PDF.exe

  • Size

    820KB

  • MD5

    7e3ce66bf8cca74b5a5339d9f2b8aeeb

  • SHA1

    5a57f3abe3e6105207ece6f3fd1e830e2c341868

  • SHA256

    c4349d30167ec1dfd9c70454c3f91a5ac21d52d433c093391462bc3f995e7781

  • SHA512

    5f4bca15864f1d1830e86bd0af9659921ca00178aacc19c9f7dd344a16b5bc77bd067c6c8e3fb3fb4615592ea52de6b981054af24729fe76f79e7db5c4ac23c8

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\19E979543A\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.5.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.13 Location: United States OS: Microsoft Windows 10 Pro64bit CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 3:16:29 PM MassLogger Started: 5/21/2022 3:16:25 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Scan_DSV_03072020_038465318631_PDF.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    miraclegomez@yandex.ru
  • Password:
    whayasaynewnew

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 18 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 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Scan_DSV_03072020_038465318631_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\Scan_DSV_03072020_038465318631_PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1392
    • C:\Users\Admin\AppData\Local\Temp\Scan_DSV_03072020_038465318631_PDF.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:4504

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

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Scan_DSV_03072020_038465318631_PDF.exe.log
    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/1392-131-0x0000000005770000-0x0000000005D14000-memory.dmp
    Filesize

    5MB

  • memory/1392-132-0x00000000050F0000-0x0000000005182000-memory.dmp
    Filesize

    584KB

  • memory/1392-133-0x00000000051A0000-0x00000000051AA000-memory.dmp
    Filesize

    40KB

  • memory/1392-134-0x0000000007CA0000-0x0000000007D3C000-memory.dmp
    Filesize

    624KB

  • memory/1392-130-0x0000000000680000-0x0000000000754000-memory.dmp
    Filesize

    848KB

  • memory/4504-163-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-169-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-141-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-139-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-143-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-145-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-147-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-149-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-151-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-153-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-155-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-157-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-159-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-161-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-135-0x0000000000000000-mapping.dmp
  • memory/4504-165-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-167-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-136-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-171-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-173-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-175-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-177-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-179-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-181-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-183-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-185-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-187-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-189-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-191-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-193-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-195-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-197-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-199-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4504-646-0x00000000054B0000-0x0000000005516000-memory.dmp
    Filesize

    408KB

  • memory/4504-647-0x0000000006D50000-0x0000000006DA0000-memory.dmp
    Filesize

    320KB