General

  • Target

    incorrect bank accountdetails.exe

  • Size

    1015KB

  • Sample

    210511-b6znfcl19e

  • MD5

    16ac48b497b41ed5c7c91151db5cb1bd

  • SHA1

    63e1e2fbad01c5bde26f5d0a03c7ff67be1f9de3

  • SHA256

    731d4912db7dffdbdad671f3606fcdf1aa28bc081f13a12dc59b08cafbb5e944

  • SHA512

    13a5d6aecf1d1acbd5015f9d79e7342c426492ab277be1a929cc5132769eff1021a5d46161fb61e991807b9a2ecdebbc67d50210391507b4d3421fa947ee5b2a

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    webmail.mdist.us
  • Port:
    587
  • Username:
    ln@mdist.us
  • Password:
    Ln#4321

Targets

    • Target

      incorrect bank accountdetails.exe

    • Size

      1015KB

    • MD5

      16ac48b497b41ed5c7c91151db5cb1bd

    • SHA1

      63e1e2fbad01c5bde26f5d0a03c7ff67be1f9de3

    • SHA256

      731d4912db7dffdbdad671f3606fcdf1aa28bc081f13a12dc59b08cafbb5e944

    • SHA512

      13a5d6aecf1d1acbd5015f9d79e7342c426492ab277be1a929cc5132769eff1021a5d46161fb61e991807b9a2ecdebbc67d50210391507b4d3421fa947ee5b2a

    • AgentTesla

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

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • 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.

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Tasks