General

  • Target

    QUOTATION#QQO2103060_Hangzhou_Zhongniu_Import_Export_Co.exe

  • Size

    706KB

  • Sample

    210412-mmz8bek8wn

  • MD5

    e6f1974aaeafa83cfb19e421a1c063ca

  • SHA1

    7b358e43bd2c990af2dccd1eedd4ff8a165c0304

  • SHA256

    31f153b1270cc3279425f4aa1d576dc02142d2008afdf5b7fd21f74431bb6473

  • SHA512

    f13de4052ddb7daaaf05e07c468571ebb6a01af1670d4744e70aac555906884552354a95dc290471a8e3db27c43e235539542ce09eb5af1230384263f4423076

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.privateemail.com
  • Port:
    587
  • Username:
    aammorris@askoblue.com
  • Password:
    hbqtHu^3

Targets

    • Target

      QUOTATION#QQO2103060_Hangzhou_Zhongniu_Import_Export_Co.exe

    • Size

      706KB

    • MD5

      e6f1974aaeafa83cfb19e421a1c063ca

    • SHA1

      7b358e43bd2c990af2dccd1eedd4ff8a165c0304

    • SHA256

      31f153b1270cc3279425f4aa1d576dc02142d2008afdf5b7fd21f74431bb6473

    • SHA512

      f13de4052ddb7daaaf05e07c468571ebb6a01af1670d4744e70aac555906884552354a95dc290471a8e3db27c43e235539542ce09eb5af1230384263f4423076

    • AgentTesla

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

    • AgentTesla Payload

    • Executes dropped EXE

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • 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 SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
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

Tasks