General

  • Target

    b7a8ee47ffa373566aa161a4a74b2b1f75ab4f9aee4f541722cadac5199621a7

  • Size

    364KB

  • Sample

    220521-cp3lgsece9

  • MD5

    8ab32f9c1b6d56cb01c2064b49f066b7

  • SHA1

    c6fc253432dd87e735595668b43dcacbacbfe1f5

  • SHA256

    b7a8ee47ffa373566aa161a4a74b2b1f75ab4f9aee4f541722cadac5199621a7

  • SHA512

    3935323827b2cb342ed14687b0531ed6f2d7ffd7ab22eaebecb38d0b91e57a57e50a625cac8a07a5bcbfb8b85365fc751a24fbd3e579f9dfa7ceb861476107b9

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.visgring.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Ttvq$TB1

Targets

    • Target

      pass_code.pdf.zip.exe

    • Size

      455KB

    • MD5

      ae8c7beac6e8f4415deb994407bd4ba2

    • SHA1

      2199e488cc6f4da87307fefc1f3b67ab489e1724

    • SHA256

      edd8ffd641e14804cf56763e7369936bd9aaf2a9248dd9aaa196f8f27b416dd6

    • SHA512

      6402bde5e1556667c4a84dbfca9ccf81c92995d23d49b067d85565fc6fdfd95beaad0d26349ca06c144622b68c3659b7c618cc21da8e66f7eab04e9c2e47f236

    • 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