General

  • Target

    IMG-79108.doc

  • Size

    1.7MB

  • Sample

    210127-6a7ala8w9j

  • MD5

    a9469c661aa9db91e728da3246956837

  • SHA1

    13cd514cd201df7ff259f06e3530d43464c87d8a

  • SHA256

    72dc481fa648ff1ade2754d8efafc1542707855755e230a5400942de42080e51

  • SHA512

    fa1e95eebe0edc14e33f0692febffcce844aeeb2056e835c3f52eedc22b65ef72625fc055ae6a1480b080660c236dda960283dbce15bdcf98e0f2bd907255eaf

Malware Config

Targets

    • Target

      IMG-79108.doc

    • Size

      1.7MB

    • MD5

      a9469c661aa9db91e728da3246956837

    • SHA1

      13cd514cd201df7ff259f06e3530d43464c87d8a

    • SHA256

      72dc481fa648ff1ade2754d8efafc1542707855755e230a5400942de42080e51

    • SHA512

      fa1e95eebe0edc14e33f0692febffcce844aeeb2056e835c3f52eedc22b65ef72625fc055ae6a1480b080660c236dda960283dbce15bdcf98e0f2bd907255eaf

    • Snake Keylogger

      Keylogger and Infostealer first seen in November 2020.

    • Snake Keylogger Payload

    • Blocklisted process makes network request

    • 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

Execution

Exploitation for Client Execution

1
T1203

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Collection

Data from Local System

3
T1005

Tasks