General

  • Target

    804e6c9e35ced60e4f63166b0b1e6431

  • Size

    404KB

  • Sample

    240129-tx163afeal

  • MD5

    804e6c9e35ced60e4f63166b0b1e6431

  • SHA1

    0617a7247a93933fa72cc17a369467a393847734

  • SHA256

    696f8a6a73cfa9a84daf49781b0bd93e3a6ce36cda1330450b511706983dccb4

  • SHA512

    0db3813f8fc5df8ed83a93ba44927e7e8134b5c30a45bcb0f3d003f92a04ebbfb81310fa79481c583a05638ce5b0ed0dead9ec9c07d71cb0ed2a4a424e26c184

  • SSDEEP

    12288:6aOR+AzP3tHBHxFnT+VQaL95JcrzQURul5lAbUJ8EVPG:6T8ATlBRkVz9IzjR6

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.mediszintech.com
  • Port:
    587
  • Username:
    a.nuber@mediszintech.com
  • Password:
    TC!%EOL8

Targets

    • Target

      804e6c9e35ced60e4f63166b0b1e6431

    • Size

      404KB

    • MD5

      804e6c9e35ced60e4f63166b0b1e6431

    • SHA1

      0617a7247a93933fa72cc17a369467a393847734

    • SHA256

      696f8a6a73cfa9a84daf49781b0bd93e3a6ce36cda1330450b511706983dccb4

    • SHA512

      0db3813f8fc5df8ed83a93ba44927e7e8134b5c30a45bcb0f3d003f92a04ebbfb81310fa79481c583a05638ce5b0ed0dead9ec9c07d71cb0ed2a4a424e26c184

    • SSDEEP

      12288:6aOR+AzP3tHBHxFnT+VQaL95JcrzQURul5lAbUJ8EVPG:6T8ATlBRkVz9IzjR6

    • AgentTesla

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

    • AgentTesla payload

    • ReZer0 packer

      Detects ReZer0, a packer with multiple versions used in various campaigns.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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 v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

3
T1552

Credentials In Files

3
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks