General

  • Target

    f1e4fd001ddab683c7aa0e2b032e32c880fc74217d28a8f05888b9c56cf01e06

  • Size

    803KB

  • Sample

    220521-capfbagehl

  • MD5

    4bd4c303e2e3f0f62ec210c3e525c0c1

  • SHA1

    126703fc06fa113a28ad62f90bb3566f4755be30

  • SHA256

    f1e4fd001ddab683c7aa0e2b032e32c880fc74217d28a8f05888b9c56cf01e06

  • SHA512

    59221730e77663ecc7b95631e1446a9f5694082563c800d9fe076564999c17d744067012fe8fcf653a99d61d14e22f3e20ebe4eeb9afd4ac53985a02efe23383

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.3.0 ################################################################# ### 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 4:48:19 AM MassLogger Started: 5/21/2022 4:48:06 AM Interval: 2 hour MassLogger Process: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe As Administrator: True

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    finance@supreme-sg.icu
  • Password:
    biggod1234@

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\781F780B4E\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.3.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 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 2:48:09 AM MassLogger Started: 5/21/2022 2:48:06 AM Interval: 2 hour MassLogger Process: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe As Administrator: True

Targets

    • Target

      QUOTATION.exe

    • Size

      864KB

    • MD5

      c2b1fcf142b7b221817ace1073ba58ae

    • SHA1

      e8952c01300ae5a7ca6cc2e24807a6c12aa556ce

    • SHA256

      6d23e4cb2a7704f3ebeaf44893bb9c1df101f0f03d522ceb51a0e1cfc7f8e8ec

    • SHA512

      6c82b754c8e4c2df128f5f562867d59cfabe1feb24a8adc2ec1db3a6c545ed59de18f8804689bf0ef4f81abf3e169ac937fdaaf66b2daaaa32d96772cd5ec3b9

    • CoreEntity .NET Packer

      A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

    • MassLogger

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

    • MassLogger log file

      Detects a log file produced by MassLogger.

    • CoreCCC Packer

      Detects CoreCCC packer used to load .NET malware.

    • ReZer0 packer

      Detects ReZer0, a packer with multiple versions used in various campaigns.

    • Checks computer location settings

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

    • 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.

    • 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

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Email Collection

1
T1114

Tasks