General

  • Target

    900a8c1323a4c379b16a742171d24aefe84e5b77ff8dcca548da759de64fd5c4

  • Size

    372KB

  • Sample

    220701-dwfwqsbgd4

  • MD5

    94c03672b3502acbb9e76b90084e206b

  • SHA1

    10457af028d473eaba4f99462b378b6bc67e7f53

  • SHA256

    900a8c1323a4c379b16a742171d24aefe84e5b77ff8dcca548da759de64fd5c4

  • SHA512

    13cec51caaddda90819583b1877c43ae2176098c58c57f5ddf54a165d87ddda2ba60cdaef19663fb9e945e85287980ea5b2ab67841af0d24be78f79937d7ac6c

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.senaussfreezone.com
  • Port:
    587
  • Username:
    hamed@senuessfreezone.com
  • Password:
    Moscow2018

Targets

    • Target

      900a8c1323a4c379b16a742171d24aefe84e5b77ff8dcca548da759de64fd5c4

    • Size

      372KB

    • MD5

      94c03672b3502acbb9e76b90084e206b

    • SHA1

      10457af028d473eaba4f99462b378b6bc67e7f53

    • SHA256

      900a8c1323a4c379b16a742171d24aefe84e5b77ff8dcca548da759de64fd5c4

    • SHA512

      13cec51caaddda90819583b1877c43ae2176098c58c57f5ddf54a165d87ddda2ba60cdaef19663fb9e945e85287980ea5b2ab67841af0d24be78f79937d7ac6c

    • 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

    • 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

2
T1112

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