General

  • Target

    8c815ae383f5010ad3812f65bf6f86bbb7d314d1ede3a7da57bf2bc163ee7b99.exe

  • Size

    512KB

  • Sample

    241122-rffgxsskaw

  • MD5

    a936e25fe560242137e5443fd79eb9cd

  • SHA1

    d360479aa3f6d528bca67518adb4ce6f62b577df

  • SHA256

    8c815ae383f5010ad3812f65bf6f86bbb7d314d1ede3a7da57bf2bc163ee7b99

  • SHA512

    987742b18bada5064906ad713b23fe398ae767d4357e8928ed7d69b105e0b8cfc45501ff49382eefbbf05dbbef0e44acbac6dd2472490bd5e9f90273714cf89c

  • SSDEEP

    12288:g6UT9Ui2iN6pLLHLQ8Z30CR8LwkxnbiXt:9UT9Ui1WLLsq3Rowkk

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    webmail.karanex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Oi&-tmhj@d5v

Targets

    • Target

      8c815ae383f5010ad3812f65bf6f86bbb7d314d1ede3a7da57bf2bc163ee7b99.exe

    • Size

      512KB

    • MD5

      a936e25fe560242137e5443fd79eb9cd

    • SHA1

      d360479aa3f6d528bca67518adb4ce6f62b577df

    • SHA256

      8c815ae383f5010ad3812f65bf6f86bbb7d314d1ede3a7da57bf2bc163ee7b99

    • SHA512

      987742b18bada5064906ad713b23fe398ae767d4357e8928ed7d69b105e0b8cfc45501ff49382eefbbf05dbbef0e44acbac6dd2472490bd5e9f90273714cf89c

    • SSDEEP

      12288:g6UT9Ui2iN6pLLHLQ8Z30CR8LwkxnbiXt:9UT9Ui1WLLsq3Rowkk

    • AgentTesla

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

    • Agenttesla family

    • AgentTesla payload

    • 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.

    • 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