General

  • Target

    4dd809ef7b62945f513de235fef1665fad3cfd0b4efb56c170c03502bde36280

  • Size

    486KB

  • Sample

    220521-bbdvjabfc5

  • MD5

    873b2359aa7f239f9815166c5c33019f

  • SHA1

    982f3043ee24b71b54eda54509adc60a501a24e5

  • SHA256

    4dd809ef7b62945f513de235fef1665fad3cfd0b4efb56c170c03502bde36280

  • SHA512

    14b472f93924dce7774126d76005f284bce21dc87d14d02d2dd981d570feb2773b56839eccec6c9910b236150134646402e1c1b208477ebd0d58b385e4f2503e

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    blessing2020

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    blessing2020

Targets

    • Target

      INVOICE_2203320045_xlxs.exe

    • Size

      526KB

    • MD5

      dd108215d60d63656303ca265f03fade

    • SHA1

      4eb98302f26496e020dc62d927555d9ae880fb10

    • SHA256

      af27bd7180ad756460e32f2ae56db7cbdc8a79e73a36b261a96f803e5b051fd5

    • SHA512

      dfb474ed650e7f56261047a45a938ffcf6653d57f5cc3bb95ae4651af04f31b8056657d1ccf8229caf3af91d387fdc8a411d43833194d7ede6f9a897982e92f2

    • AgentTesla

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

    • AgentTesla Payload

    • 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