General

  • Target

    Shipping Invoice & BL.xlsx

  • Size

    358KB

  • Sample

    211028-ltzj3afhcr

  • MD5

    4db752c789a2038d78d8067db7c6f79c

  • SHA1

    dce36fecfd52b3df8dd134f0dbc0e2d36a0a114d

  • SHA256

    c2c8ddcbdbed110a1b07aa3180297125eb82353ddadbc540b92e7ee2f1cb4574

  • SHA512

    c04bb6a0b48296843e3e9c507b942d44de1003d418201f82d49b05b8fd81738675cc4ca4441ee3d15016cc56ec0a804db114350b6322f9aef5b3b00aabcb700e

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.enerzi.co
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Enerzis@123!#

Targets

    • Target

      Shipping Invoice & BL.xlsx

    • Size

      358KB

    • MD5

      4db752c789a2038d78d8067db7c6f79c

    • SHA1

      dce36fecfd52b3df8dd134f0dbc0e2d36a0a114d

    • SHA256

      c2c8ddcbdbed110a1b07aa3180297125eb82353ddadbc540b92e7ee2f1cb4574

    • SHA512

      c04bb6a0b48296843e3e9c507b942d44de1003d418201f82d49b05b8fd81738675cc4ca4441ee3d15016cc56ec0a804db114350b6322f9aef5b3b00aabcb700e

    • AgentTesla

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

    • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

      suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    • AgentTesla Payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Scheduled Task

1
T1053

Exploitation for Client Execution

1
T1203

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Scripting

1
T1064

Modify Registry

2
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks