General

  • Target

    8bd0557f45b1d8f632e6055f537d52a866d4524401508c14b07ab6b1dd9af631

  • Size

    394KB

  • Sample

    220521-af59xadafm

  • MD5

    3fbbab1a550ab6244116a8de3a6f2e14

  • SHA1

    f6d9660cf67bd0f85d3f30277c56e70df15810c1

  • SHA256

    8bd0557f45b1d8f632e6055f537d52a866d4524401508c14b07ab6b1dd9af631

  • SHA512

    67334aa5cf65409ec41b012eb0f84a17c92954a932c97d22cf054c0aad50ccd5148783941298216b863793fe8c3514c3a525d50a48a7aa76c24d2063760d77db

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    71c7eb1f8baa88

Targets

    • Target

      Doc_767467JUNE2020.exe

    • Size

      450KB

    • MD5

      8ac061125c6771c56f990211fbcaf819

    • SHA1

      993eb057ce8d1f21048d76a6083818b60208d465

    • SHA256

      0189ad2e08f8bb4c487e31502a7e86ccf2bfaba40fda638f316cb5c9ca80d767

    • SHA512

      f57201eee7b2c9a093f956b2b84d6c91beb6909dbff76967657b856d16b54e735f10bb9516a50e5b4c51c1d6ba4fb52bb4f66ee1d9a8f73be1fda69112e2aa63

    • 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 v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks