General

  • Target

    f9abeb7ba32ac4b84d855503d607cfe2fc79f147512db0871a262d53c560c5c1

  • Size

    790KB

  • Sample

    220521-pdqtrsfba9

  • MD5

    bb5d4969a5156c1977998cce74f4624e

  • SHA1

    8866b139ff9512debf0abf4cc50ec55cda88f265

  • SHA256

    f9abeb7ba32ac4b84d855503d607cfe2fc79f147512db0871a262d53c560c5c1

  • SHA512

    10425d190bf7d9165190010fa230e693eb3b7cee530112dde0108e445746b579e67f81e704ac3fcda74a6767b8a62545657db178f41a60d19520ce1f6a786684

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\79FE0CC911\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.5.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 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 1:04:54 PM MassLogger Started: 5/21/2022 1:04:43 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\catalogues lists.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\F95B724EDE\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 10 Pro64bit CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 3:04:24 PM MassLogger Started: 5/21/2022 3:03:55 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\catalogues lists.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Targets

    • Target

      catalogues lists.exe

    • Size

      847KB

    • MD5

      f6d7d69e4daa79e5a61cee1dd563f372

    • SHA1

      6fa906729eafee56d8c077215881cbb0f7a8ad36

    • SHA256

      1a1e5e11d4fc8b5b0b1b8d7ba56879a75c9079aa63c613d2f266a1b84bc15cfd

    • SHA512

      28a9ccfa6b1d20ccae445d41989c2115e6a2bb5f16b828fc4dc22f588f27c826edec7a590243db2e38d0de9956469604bb58c97f773c7310bffc49f4408aa380

    • 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.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • 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

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Tasks