General

  • Target

    Shipment Documents.xlsx

  • Size

    301KB

  • Sample

    211019-hs86bsfda7

  • MD5

    f4d40b4b78f2056ebcfaf52b52163be1

  • SHA1

    5c627e0e50a1211e2557c87358b360720f3a52da

  • SHA256

    abb24af23f4bb11299c2e428f36242b872ca4ebe7757500322c2ad0b6bdee43a

  • SHA512

    3d1f9e5c39588813d57416ddc24939fc5203d19426689fd1abdb340f3883a812d2845db502ec4cdc845c68b7aee9a5cdf956bcad0c341577fca2da16b4a451cb

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.croatiahunt.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    VilaVrgade852

Targets

    • Target

      Shipment Documents.xlsx

    • Size

      301KB

    • MD5

      f4d40b4b78f2056ebcfaf52b52163be1

    • SHA1

      5c627e0e50a1211e2557c87358b360720f3a52da

    • SHA256

      abb24af23f4bb11299c2e428f36242b872ca4ebe7757500322c2ad0b6bdee43a

    • SHA512

      3d1f9e5c39588813d57416ddc24939fc5203d19426689fd1abdb340f3883a812d2845db502ec4cdc845c68b7aee9a5cdf956bcad0c341577fca2da16b4a451cb

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • AgentTesla Payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • 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.

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks