General

  • Target

    Scan096355.exe

  • Size

    680KB

  • Sample

    211202-hnnc3afdh8

  • MD5

    2e65f749507d0fb3a8e980565a5055a1

  • SHA1

    dcd01dd0b4c76b26ba5f1590016a28ed7286a7f4

  • SHA256

    7550bec79c053dc848454a9b4e4ddeef38d5e1873b9df5940813af85aacfd021

  • SHA512

    e8b3cb57c995561defe236feb32e9811a19123bb4e25e9a7b36c8c42b6b2c2e5cc6608633c895e3a6863adc9e59fa0f70ad4f6ce3f44e129cabc92122eacf276

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    wOeQnaO7

Targets

    • Target

      Scan096355.exe

    • Size

      680KB

    • MD5

      2e65f749507d0fb3a8e980565a5055a1

    • SHA1

      dcd01dd0b4c76b26ba5f1590016a28ed7286a7f4

    • SHA256

      7550bec79c053dc848454a9b4e4ddeef38d5e1873b9df5940813af85aacfd021

    • SHA512

      e8b3cb57c995561defe236feb32e9811a19123bb4e25e9a7b36c8c42b6b2c2e5cc6608633c895e3a6863adc9e59fa0f70ad4f6ce3f44e129cabc92122eacf276

    • AgentTesla

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

    • AgentTesla Payload

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

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

    • 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

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

2
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks