General

  • Target

    ece88969ceffd5da422e26da3c841e69ab4a955ffb0867a6ee86790feb6b9150

  • Size

    739KB

  • Sample

    220521-nqd53aeab9

  • MD5

    81bdcaee6e54495f6e58902b931a2675

  • SHA1

    1fbd8795bcc9529ee9cd8500ffb0c4bc341944a5

  • SHA256

    ece88969ceffd5da422e26da3c841e69ab4a955ffb0867a6ee86790feb6b9150

  • SHA512

    4fe6d1e4bea59118178912ab8f5eabba6af85d31cfbb84eebe847532239006036de62813d8b30ee67e061e3fb27adfc04e3af69ce51e84c29d211bc0efe9571c

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.cappac.com.tr
  • Port:
    587
  • Username:
    emre@cappac.com.tr
  • Password:
    aTlcLVD6nhEE

Targets

    • Target

      hesaphareketi000001,pdf.exe

    • Size

      2.9MB

    • MD5

      62365690663bb84166207a981d124d64

    • SHA1

      35a0d45093ab7d5e6acc22b0f1b1ee0eaf38da26

    • SHA256

      d90041e6b2a7deca5936829d8a2f6b9c190abcab6c81c3a99b22d41ed6fffbb0

    • SHA512

      2b35cbbe45a125f373d4f57b1184e12ab88c4cd6c76d51bdc4f928a89bdf324eb4cd036fe9df22c69858bd83d9bfd07b012630ea7ebccbb877373f3c235b1135

    • AgentTesla

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

    • MassLogger

      Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

    • MassLogger Main Payload

    • AgentTesla Payload

    • Executes dropped EXE

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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.

    • Accesses Microsoft Outlook profiles

    • 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

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks