General

  • Target

    IMG-0641.doc

  • Size

    598KB

  • Sample

    210114-6926w9a1ss

  • MD5

    44c09f25925b3a659e19dae6b5e70cc5

  • SHA1

    4eb7ae147669bdb3cc508efc1160fd820e662fa9

  • SHA256

    2ac13e163b9bdd76aa1dd7ebcfc2dd9ddc6a32712c328889495637a5d0d2a5ea

  • SHA512

    d9bdabf18d25ea6ac434c63062c8119ecc2c52fc76b4c31ccc5079f7c4ffd7472a43574aa614ed15bafd7655011221f79dba1657dcba81e8fd86f30c979c2579

Score
10/10

Malware Config

Targets

    • Target

      IMG-0641.doc

    • Size

      598KB

    • MD5

      44c09f25925b3a659e19dae6b5e70cc5

    • SHA1

      4eb7ae147669bdb3cc508efc1160fd820e662fa9

    • SHA256

      2ac13e163b9bdd76aa1dd7ebcfc2dd9ddc6a32712c328889495637a5d0d2a5ea

    • SHA512

      d9bdabf18d25ea6ac434c63062c8119ecc2c52fc76b4c31ccc5079f7c4ffd7472a43574aa614ed15bafd7655011221f79dba1657dcba81e8fd86f30c979c2579

    Score
    10/10
    • Modifies WinLogon for persistence

    • 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.

    • 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

Winlogon Helper DLL

1
T1004

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Tasks