Resubmissions

30-09-2024 09:01

240930-ky1ggs1dmh 10

30-09-2024 08:44

240930-km6t5azhjh 8

General

  • Target

    Ref227982472 3611316041 有害物情報.Xlsx.r00

  • Size

    536KB

  • Sample

    240930-ky1ggs1dmh

  • MD5

    45c91015ca63b85ecf6202993cede3ab

  • SHA1

    3638e3dc0810c44ec1e21b6f0ce1333a86e834f3

  • SHA256

    5144cff448d0992466ef87b9c15cf827ef8dfebbb651422f6f0032c9317c1630

  • SHA512

    e3d3ebb684ea1b6ccfc8a3c9d6448a7916efa69186da0ddde973399f0a9ec2938cde6b22c59b16e2b6164ff3ed0a0c5049ed7c5023ba50d134f23af7d3a1bda2

  • SSDEEP

    12288:x84eJhfz8c4nK40kOsDSTl+V8bI0UKxQ9nBW:IJZz8ck0psDSx+V8bI01mw

Malware Config

Targets

    • Target

      Ref227982472 3611316041 有害物情報.Xlsx.exe

    • Size

      644KB

    • MD5

      2055e529b8767f5ebaee9afcefd16d91

    • SHA1

      521d53678fbba3951f19dd2cfed6e4b0d5ef8914

    • SHA256

      550aeabbe62d5a14363bac014c16acb456fd2d92ea227d5762a85a51466e3404

    • SHA512

      e98333277ff85e147feb5efea6f0376bfbb2cd9bfa361337fdc40c5c211c626b8e7728326d40158e423b33f31eec0cdde3314dee8c19aa82042c747e6aaf01a3

    • SSDEEP

      12288:gUxKiiSUMD8mBsdNnyVyPziLeSAkJuf3TBtN:gUxchMAfdgVUziqSAmud3

    • Snake Keylogger

      Keylogger and Infostealer first seen in November 2020.

    • Snake Keylogger payload

    • Command and Scripting Interpreter: PowerShell

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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