General

  • Target

    7b7ea0fc09d3630a2909440b58cf3863fbdeb9c2140a396ce2ea43a658f6395e

  • Size

    1.2MB

  • Sample

    220520-2ekqcsacgn

  • MD5

    9f6d995c7c0008773041666781475177

  • SHA1

    0dabef726b2c85431073761d1ed61e6aa1015f5f

  • SHA256

    7b7ea0fc09d3630a2909440b58cf3863fbdeb9c2140a396ce2ea43a658f6395e

  • SHA512

    84bbdde2d6799c7a93e288d9a9b7881678020fd1e9bf98dea5e114671493b530fa160485a5a6d26990228804be2fe1afe5bba1d22a19ebdcea8232111155b863

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note
################################################################# MassLogger v2.0.0.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 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: 5/20/2022 10:34:07 PM MassLogger Started: 5/20/2022 10:34:00 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\PROFORMA.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Targets

    • Target

      PROFORMA.EXE

    • Size

      625KB

    • MD5

      5ee37bae7dc2ef6749894b360079de60

    • SHA1

      2c8da401b48e11100319f358063798126013dd35

    • SHA256

      afa30484561c8bfbba6a3b13b19ead18aa40492c52ac6501a18fed59c6a11a3e

    • SHA512

      2a1bbe00cb3faa559310f302d24bc4c73babd58702ed6ae5146c40af8c00386d26f81e83ee891e1cab2853b1d5f0eb0668570999e29cbadf263cb842d8af6beb

    • MassLogger

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

    • MassLogger log file

      Detects a log file produced by MassLogger.

    • Modifies visibility of file extensions in Explorer

    • 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 Enterprise v6

Tasks