Resubmissions

19-01-2021 16:35

210119-f4jb7cdzrs 10

General

  • Target

    IMG_0661.doc

  • Size

    720KB

  • Sample

    210119-f4jb7cdzrs

  • MD5

    1cc97f80c8e2b8c63dcced418802f05d

  • SHA1

    ea7a55042caf762d2ef656a4395b6abe09f57644

  • SHA256

    c18a8f9b247d1af804f7deb0e94fd9e853f760e27bdab7b39aceb17b12e90954

  • SHA512

    dd4a8a478704fb433e0c27972ceb1e128885994058a313eb0a5b5687b7b948a97261f1d237dc455ab1575b5808dc82eb5b50c2219f9fe3a6f3d80f841ee45d6f

Malware Config

Targets

    • Target

      IMG_0661.doc

    • Size

      720KB

    • MD5

      1cc97f80c8e2b8c63dcced418802f05d

    • SHA1

      ea7a55042caf762d2ef656a4395b6abe09f57644

    • SHA256

      c18a8f9b247d1af804f7deb0e94fd9e853f760e27bdab7b39aceb17b12e90954

    • SHA512

      dd4a8a478704fb433e0c27972ceb1e128885994058a313eb0a5b5687b7b948a97261f1d237dc455ab1575b5808dc82eb5b50c2219f9fe3a6f3d80f841ee45d6f

    • 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.

    • 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

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Tasks