General

  • Target

    payment receipt.doc

  • Size

    566KB

  • Sample

    210419-dfd7zpe23n

  • MD5

    62a7b3f94fccff2290554183030a7295

  • SHA1

    2ecc1fcffe96a21bfdc33a30a1f79195f96b3cf8

  • SHA256

    77ff0fe733a29458872bac397a3f6bf6a6abf878edcd7cdd21b4b7fc396ec56e

  • SHA512

    ef6608e72b01c272665245367d22258980f173e3bd70b9a8a7a1f21a59a88aaa0380845d3615f2bb41cd0667c457d201c17d88f00f5c265b1cade0059c3f1427

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.orienttech.com.qa
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Op{^fLb9gN[!

Targets

    • Target

      payment receipt.doc

    • Size

      566KB

    • MD5

      62a7b3f94fccff2290554183030a7295

    • SHA1

      2ecc1fcffe96a21bfdc33a30a1f79195f96b3cf8

    • SHA256

      77ff0fe733a29458872bac397a3f6bf6a6abf878edcd7cdd21b4b7fc396ec56e

    • SHA512

      ef6608e72b01c272665245367d22258980f173e3bd70b9a8a7a1f21a59a88aaa0380845d3615f2bb41cd0667c457d201c17d88f00f5c265b1cade0059c3f1427

    • AgentTesla

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

    • AgentTesla Payload

    • Blocklisted process makes network request

    • 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.

    • Adds Run key to start application

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Exploitation for Client Execution

1
T1203

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

3
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Collection

Data from Local System

3
T1005

Tasks