General

  • Target

    Remittance_Report.exe

  • Size

    543KB

  • Sample

    211022-kfahcaccbj

  • MD5

    817341449a197b56cdd3795ca7dba89b

  • SHA1

    b4f79225b1c45f49771fd72e046d43be1acfab59

  • SHA256

    3806b35c08f81f6b6d8e3d9d4e9321ffad60f1edbb969655ed90926832c443d9

  • SHA512

    92c1b7ec4686e81b6e27437439f4fbec7bd66d5117ec1f830a0c1bf5da2aa3f1dc8d41b0d8ed539a501c9ea49a513440666a6fc644fad7e9312ebf0b10c92ebd

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.sautiyapwanifm.com
  • Port:
    587
  • Username:
    uwada@sautiyapwanifm.com
  • Password:
    Uwada12345

Targets

    • Target

      Remittance_Report.exe

    • Size

      543KB

    • MD5

      817341449a197b56cdd3795ca7dba89b

    • SHA1

      b4f79225b1c45f49771fd72e046d43be1acfab59

    • SHA256

      3806b35c08f81f6b6d8e3d9d4e9321ffad60f1edbb969655ed90926832c443d9

    • SHA512

      92c1b7ec4686e81b6e27437439f4fbec7bd66d5117ec1f830a0c1bf5da2aa3f1dc8d41b0d8ed539a501c9ea49a513440666a6fc644fad7e9312ebf0b10c92ebd

    • AgentTesla

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

    • AgentTesla Payload

    • Drops file in Drivers directory

    • 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

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks