General

  • Target

    d46699db75f60d8f4f81626a0c31a1daf18af7fbafd249736001f161c1090f20

  • Size

    12KB

  • Sample

    240313-cyek1sad5v

  • MD5

    346aa5104c386e77b15cbfa54e3c0194

  • SHA1

    2b031a997c388d8aace26a96e01ce9d43e95b378

  • SHA256

    d46699db75f60d8f4f81626a0c31a1daf18af7fbafd249736001f161c1090f20

  • SHA512

    ed6a39ac14756eeb2fe1c4c83561c6f6bc2773f921f42579612e7ffb2b668b5810c3491672475f7a3c64c7e64e20fa955bfb2d4931af826337647b86bd5d4dbe

  • SSDEEP

    384:OF49BjVSOHp5e+em+76kyn/VJd+mUM1iJHi6uHZzfH1TdDYlt+PoYzFsRhZJRY1F:9V77du76koVJgC1iJP4VTqla0Jy

Malware Config

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    ftp.zilchworld.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    P99@Moscow

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.zilchworld.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    P99@Moscow

Targets

    • Target

      d46699db75f60d8f4f81626a0c31a1daf18af7fbafd249736001f161c1090f20

    • Size

      12KB

    • MD5

      346aa5104c386e77b15cbfa54e3c0194

    • SHA1

      2b031a997c388d8aace26a96e01ce9d43e95b378

    • SHA256

      d46699db75f60d8f4f81626a0c31a1daf18af7fbafd249736001f161c1090f20

    • SHA512

      ed6a39ac14756eeb2fe1c4c83561c6f6bc2773f921f42579612e7ffb2b668b5810c3491672475f7a3c64c7e64e20fa955bfb2d4931af826337647b86bd5d4dbe

    • SSDEEP

      384:OF49BjVSOHp5e+em+76kyn/VJd+mUM1iJHi6uHZzfH1TdDYlt+PoYzFsRhZJRY1F:9V77du76koVJgC1iJP4VTqla0Jy

    • AgentTesla

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

    • Blocklisted process makes network request

    • 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.

    • 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 Enterprise v15

Tasks