General

  • Target

    Payment Error.dot

  • Size

    617KB

  • Sample

    250129-rsw1faymgm

  • MD5

    8b38fd5f962b524af2dbfdcd6e21d9b6

  • SHA1

    aec9993e2216c9478eae142c6b24d31e46882aa1

  • SHA256

    dd9e1fe309fae0cc8dee8d6909a404cd25c151fa817d2fc8a620608fa65c7a63

  • SHA512

    43620a278a217dec4afc1057934e4dc5b6f675d8f0bbb404d84a894ee3bcd3083888c83457bea5fd70b7960d6ac8bb55ad6209aa3216819343ad8917be15589f

  • SSDEEP

    6144:rwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAh:F

Malware Config

Extracted

Family

vipkeylogger

Credentials

Targets

    • Target

      Payment Error.dot

    • Size

      617KB

    • MD5

      8b38fd5f962b524af2dbfdcd6e21d9b6

    • SHA1

      aec9993e2216c9478eae142c6b24d31e46882aa1

    • SHA256

      dd9e1fe309fae0cc8dee8d6909a404cd25c151fa817d2fc8a620608fa65c7a63

    • SHA512

      43620a278a217dec4afc1057934e4dc5b6f675d8f0bbb404d84a894ee3bcd3083888c83457bea5fd70b7960d6ac8bb55ad6209aa3216819343ad8917be15589f

    • SSDEEP

      6144:rwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAh:F

    • VIPKeylogger

      VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.

    • Vipkeylogger family

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks