General

  • Target

    GFS_03781.xls.exe

  • Size

    1.2MB

  • Sample

    210121-qf48hr634s

  • MD5

    9919da45b26135c4e371eb596f9697e9

  • SHA1

    00766ab33ae85e995be911f9ac425a00a2d69fca

  • SHA256

    a9ba86161cb89de53aed44c5bc25ffd09dc5c8091f87e52618a3ef009d381c46

  • SHA512

    a48d1c9d5ea5aadc571a314bff7d1dd9cb6cc0fb07eada1fba9577686ebfbd6e9ead99c30eb5f125b4bb958c3e3014ad70c874d047e0231cb3e4d0b8ddbb6601

Malware Config

Targets

    • Target

      GFS_03781.xls.exe

    • Size

      1.2MB

    • MD5

      9919da45b26135c4e371eb596f9697e9

    • SHA1

      00766ab33ae85e995be911f9ac425a00a2d69fca

    • SHA256

      a9ba86161cb89de53aed44c5bc25ffd09dc5c8091f87e52618a3ef009d381c46

    • SHA512

      a48d1c9d5ea5aadc571a314bff7d1dd9cb6cc0fb07eada1fba9577686ebfbd6e9ead99c30eb5f125b4bb958c3e3014ad70c874d047e0231cb3e4d0b8ddbb6601

    • Snake Keylogger

      Keylogger and Infostealer first seen in November 2020.

    • Snake Keylogger Payload

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • 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.

    • 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.

    • Enumerates physical storage devices

      Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Tasks