General

  • Target

    9e91c5cc6cda49e5de36e370b2b467b85ff70619050d4bb79a37fb5a8c932eef

  • Size

    374KB

  • Sample

    220521-n3qdvseee9

  • MD5

    9d2785dc3f8b3c694585edaf14d43c5d

  • SHA1

    d856a5f1ec9d30bc39b61cb1ba4f0707949915b6

  • SHA256

    9e91c5cc6cda49e5de36e370b2b467b85ff70619050d4bb79a37fb5a8c932eef

  • SHA512

    51c518b691ba82fda621329c8d78f5cb0d525e97bb1d768eae2c67ff2e1c7ecba8b8266f1df26e95f30a39d7cce6b3328d0592170e994cdd7791e426e48d24fc

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.samudrapanel.com
  • Port:
    587
  • Username:
    sce.info@samudrapanel.com
  • Password:
    weslali234

Targets

    • Target

      Purchase Order.exe

    • Size

      407KB

    • MD5

      851ea4aef955d46889ae6bcf983d0095

    • SHA1

      6c3499fd1212cf68fc032013376ba945e13f8ebf

    • SHA256

      51318719b263c486e7e062246b202e320b5e56c293fee31a4e63de9ddd043f67

    • SHA512

      ec9d566c6f10bb3d46e9779509db4dabd4ee63b42af2941ccd0f913515c433aa92a14402aed4de23d9ed6acf8a11f6ca8b16c295953b3ba0ad07851638069feb

    • AgentTesla

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

    • AgentTesla Payload

    • Looks for VirtualBox Guest Additions in registry

    • ReZer0 packer

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

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • 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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • 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

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks