General

  • Target

    IMG_761213.doc

  • Size

    1011KB

  • Sample

    210126-cf3h978xqa

  • MD5

    a9b798f391bf12851f885eb0a696b1fc

  • SHA1

    d67ca4b35f77ded21e5e5f101bc69a694904d4b8

  • SHA256

    fdbb2ac6c641eeae342ba7a8e32d8cd40ec6749aa3d49f89cc6fbf934ebf3f41

  • SHA512

    200a0ea3ff4c012a6c1bac387afd71a5561009d97fdc77b2e733c37b0001e630255e05672b67861c8d2e873daf6aeb69c328c675457301943101b1f40442d2ef

Malware Config

Targets

    • Target

      IMG_761213.doc

    • Size

      1011KB

    • MD5

      a9b798f391bf12851f885eb0a696b1fc

    • SHA1

      d67ca4b35f77ded21e5e5f101bc69a694904d4b8

    • SHA256

      fdbb2ac6c641eeae342ba7a8e32d8cd40ec6749aa3d49f89cc6fbf934ebf3f41

    • SHA512

      200a0ea3ff4c012a6c1bac387afd71a5561009d97fdc77b2e733c37b0001e630255e05672b67861c8d2e873daf6aeb69c328c675457301943101b1f40442d2ef

    • 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