General

  • Target

    ca13a97b94b0e17f5d863a2290f10931_JaffaCakes118

  • Size

    363KB

  • Sample

    240830-c53w7avdkl

  • MD5

    ca13a97b94b0e17f5d863a2290f10931

  • SHA1

    a5035ff9bd7264431a254a0b973864febfb19c7f

  • SHA256

    3e1a48cb4283d83c729670dbdc69d6a8d5290a50bebc621baf7e0a72cd56ffb6

  • SHA512

    77b793dba1503b92f2f07487b7e5c9aa17f35ba7e49dc6453d001cb16f2234768bc0e6fd03ae4449a4ef85d7df56b8f8a77b06f307dc5c16479a0bb7d6e03b79

  • SSDEEP

    6144:aI84xUdNqsB9+U1eq7RUSdROy8g27o8qpv5hM3N6sAIEPmh7hF8:Z84xyUA9gwUNng2avz2ZAImA/8

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.hegelman.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    B!c)MGg9

Targets

    • Target

      swift art.pdf.exe

    • Size

      413KB

    • MD5

      f0e38ba220616f3b94a5f71712d52817

    • SHA1

      f59a1e433565255d52720f49ce0f4e52c29b78bf

    • SHA256

      e9dc15fdcf77dd8dde52392b63a79e43e39d85431434198f5103ced790f9034a

    • SHA512

      3d18bd099d2713382d7fa2b12ee4cc9f19e79392318d25e317708c5efa6c5c7bd943f20d3d11be1172b877f8f2b19e09ac5442dfafd1f4a3b1d71a77f3af3626

    • SSDEEP

      6144:6Axt05ERQ+3HwO0adBqsB9+U1eqjRISdJOyYge708qlv5/Mf76oAeEHm9E0:iESoZ4C9AWIzJgeCvlY5AeEKh

    • AgentTesla

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

    • AgentTesla payload

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Looks for VirtualBox Guest Additions in registry

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Drops file in Drivers directory

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses Microsoft Outlook profiles

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks