General

  • Target

    bec2fda815cb641d2ece253992b14f6bef8a618f0ff44a8557bff5ce3e1588a6

  • Size

    102KB

  • Sample

    240327-let12acd21

  • MD5

    4a508215899ec70680e28f8fdceb7831

  • SHA1

    cf759a2010caad8779ff4b4a89d24c679b9fafa8

  • SHA256

    bec2fda815cb641d2ece253992b14f6bef8a618f0ff44a8557bff5ce3e1588a6

  • SHA512

    b2a8c49f5d19a38f44517c8d6cb9de2ad46cff724084c30a486be2b257a7a17acec8d770084ae661958f899423ea28705b8874e61db6032f099a1fcacaa85f0d

  • SSDEEP

    1536:NwAlRkwAlRkwAlRBqu9UDXaIW9on8vuew0:NwAlawAlawAlHqu9UDXaIW9on8vuew0

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.scootero.cl
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Dangote1235$

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      bec2fda815cb641d2ece253992b14f6bef8a618f0ff44a8557bff5ce3e1588a6

    • Size

      102KB

    • MD5

      4a508215899ec70680e28f8fdceb7831

    • SHA1

      cf759a2010caad8779ff4b4a89d24c679b9fafa8

    • SHA256

      bec2fda815cb641d2ece253992b14f6bef8a618f0ff44a8557bff5ce3e1588a6

    • SHA512

      b2a8c49f5d19a38f44517c8d6cb9de2ad46cff724084c30a486be2b257a7a17acec8d770084ae661958f899423ea28705b8874e61db6032f099a1fcacaa85f0d

    • SSDEEP

      1536:NwAlRkwAlRkwAlRBqu9UDXaIW9on8vuew0:NwAlawAlawAlHqu9UDXaIW9on8vuew0

    • AgentTesla

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • 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 v13

Execution

Exploitation for Client Execution

1
T1203

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Tasks