Analysis

  • max time kernel
    101s
  • max time network
    169s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 04:20

General

  • Target

    CATALOGUE RMK TRADING LTD_PDF.exe

  • Size

    856KB

  • MD5

    de193c4b6e882040d19694c1b66c85e1

  • SHA1

    61d4f4a219b11d083b474c3aaff59ef589e08f2f

  • SHA256

    0407c714fca6ad87fb152afbf456a8e34a50ae5fff4b9fba36a1cb9fe1126e34

  • SHA512

    97c413297c2cfe2a0fc63de566f7d2d3ac9531f0e5f7a2b77154d1f2aa0294f7e12331f32ee68abe55910080db68b4dea4847806faeb8bf7313331b2b2ffbb61

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.5.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 Location: United States OS: Microsoft Windows 7 Ultimate 64bit CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 7:59:54 AM MassLogger Started: 5/21/2022 7:59:43 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\CATALOGUE RMK TRADING LTD_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:
    [email protected]
  • 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 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 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\CATALOGUE RMK TRADING LTD_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\CATALOGUE RMK TRADING LTD_PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1348
    • C:\Users\Admin\AppData\Local\Temp\CATALOGUE RMK TRADING LTD_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:1368

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/1348-54-0x00000000009C0000-0x0000000000A9C000-memory.dmp
    Filesize

    880KB

  • memory/1348-55-0x0000000076531000-0x0000000076533000-memory.dmp
    Filesize

    8KB

  • memory/1348-56-0x0000000000530000-0x0000000000540000-memory.dmp
    Filesize

    64KB

  • memory/1348-57-0x0000000006050000-0x0000000006108000-memory.dmp
    Filesize

    736KB

  • memory/1368-58-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-59-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-61-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-62-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-63-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-64-0x00000000004AB84E-mapping.dmp
  • memory/1368-66-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-68-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-70-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-72-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-74-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-76-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-78-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-80-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-82-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-84-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-86-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-88-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-90-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-94-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-92-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-96-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-98-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-100-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-102-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-104-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-106-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-108-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-110-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-112-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-114-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-116-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-118-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-120-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1368-577-0x0000000000920000-0x0000000000964000-memory.dmp
    Filesize

    272KB

  • memory/1368-579-0x0000000004E05000-0x0000000004E16000-memory.dmp
    Filesize

    68KB

  • memory/1368-580-0x0000000004520000-0x0000000004534000-memory.dmp
    Filesize

    80KB