General

  • Target

    Purchase_Order.PDF.js

  • Size

    1.7MB

  • Sample

    241127-hwzq3azkgq

  • MD5

    06bf8ca73f44aa2aec54c41c4c20d3d3

  • SHA1

    9862b9785b61b42dc8fef4e3ecb8319e2d7c7710

  • SHA256

    d0ecdf88e56cae4a5c2c759246b97163beb6f63023593a1aee00ee896efe6a16

  • SHA512

    84366dd9a5324d8fe98d31383dc13ae52c5a72600afafc1e396416f2b34c6a42db7b09e8571bab343fb894aa7e7b69afcb5542eb8f5f411b570d343288ddd6e8

  • SSDEEP

    24576:AuzJmDrkb8kjVaj3cWZUYUNa/US5ZZ2BsiH8pM0:1JmDrkAk9jk/UPd8B

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    nbwz jvfz fmek ghid

Extracted

Family

snakekeylogger

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    nbwz jvfz fmek ghid

Extracted

Family

wshrat

C2

http://185.17.40.142:5086

Targets

    • Target

      Purchase_Order.PDF.js

    • Size

      1.7MB

    • MD5

      06bf8ca73f44aa2aec54c41c4c20d3d3

    • SHA1

      9862b9785b61b42dc8fef4e3ecb8319e2d7c7710

    • SHA256

      d0ecdf88e56cae4a5c2c759246b97163beb6f63023593a1aee00ee896efe6a16

    • SHA512

      84366dd9a5324d8fe98d31383dc13ae52c5a72600afafc1e396416f2b34c6a42db7b09e8571bab343fb894aa7e7b69afcb5542eb8f5f411b570d343288ddd6e8

    • SSDEEP

      24576:AuzJmDrkb8kjVaj3cWZUYUNa/US5ZZ2BsiH8pM0:1JmDrkAk9jk/UPd8B

    • Snake Keylogger

      Keylogger and Infostealer first seen in November 2020.

    • Snake Keylogger payload

    • Snakekeylogger family

    • WSHRAT

      WSHRAT is a variant of Houdini worm and has vbs and js variants.

    • Wshrat family

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Drops startup 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

    • Adds Run key to start application

    • 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 Enterprise v15

Tasks