General

  • Target

    84e8e0fb65510d250e5427aabab3dfd60c0562c60f13ed5e4fa8410fa216c53b

  • Size

    365KB

  • Sample

    220521-ahv7qadbfl

  • MD5

    231bebb5118a261ab3b02d5cfa95b5ac

  • SHA1

    9fdf371d96620ce6301b0f44d7e290131665518b

  • SHA256

    84e8e0fb65510d250e5427aabab3dfd60c0562c60f13ed5e4fa8410fa216c53b

  • SHA512

    e95ef809ee1acbf2858ff637d157504791b9cad2cf8bfc29a3004e21b04a64eb2066b0888cb6fc4a0527ba2f816b256e0c18071f2157fd35b7ddf313d02e92bd

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @jaffinmarknma@344

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @jaffinmarknma@344

Targets

    • Target

      RFQ.exe

    • Size

      420KB

    • MD5

      55ee586dd55c291e9829fe345028de76

    • SHA1

      e1457c39c4412c5b7ab3f12767025177f0b6c03b

    • SHA256

      ffd474ba42b484a0c7eb8688e37334d55e65c49dcb88dcf3bc542276cd7d5348

    • SHA512

      fa5e1ebcd2573943da0c5926ae232333ec0c17536fdfafd5be0b675f5d569a27e7727ee44cab6c6bec27fc9a81dd6b09e90a6490242b296a00561fe78564f42f

    • 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