General

  • Target

    8db2ca2158bfaa69b4123a11c568a67ff2a6d38212636ad3a5b19c43486e9ddf

  • Size

    443KB

  • Sample

    220521-nbqwbadde3

  • MD5

    577447979fdae07a28f1c00df8bf9e80

  • SHA1

    69329ee0b308b9465fb9ec2c0b99b75002c2c641

  • SHA256

    8db2ca2158bfaa69b4123a11c568a67ff2a6d38212636ad3a5b19c43486e9ddf

  • SHA512

    3d283626709ae1f0aad76cb80b21f5c7e30fba3f84a1af3337365b460bad159bae0b82c027abd4d2aef56aba0903fc49b72d0d471473890a497fc294c13eb579

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.leffamatrizes.com.br
  • Port:
    587
  • Username:
    leffa@leffamatrizes.com.br
  • Password:
    amx1020

Targets

    • Target

      PO - 0002329.exe

    • Size

      528KB

    • MD5

      1d85645f34918a5ba157102e2c7875cb

    • SHA1

      50fadcfd922cfefc3d3a3a656010d8d8a652efc5

    • SHA256

      9f379ddcf3adfd88e7011f9c162b77deb176eb99d91e9c57764b044e26115d4b

    • SHA512

      acae2b81e9ea2a3e1c1c37d7e94b37b8e18c18e32f9bcb798b2dd492f61d1b3c695b1a8ecc35a6b1e4cf9747d595c1f050191dd16b8ecb1950b37235c20d4e4c

    • AgentTesla

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

    • AgentTesla Payload

    • Drops file in Drivers directory

    • 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.

    • Accesses Microsoft Outlook profiles

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks