General

  • Target

    254895628a666eaae9b25dd2f9666b62f38fc607fd0d0b7af6447117241643eb

  • Size

    384KB

  • Sample

    220521-bb1pasefhk

  • MD5

    9608a060b1057a4069a953babdf87736

  • SHA1

    2b1ba850053a55b0b5a7164680b0bb701ca96de8

  • SHA256

    254895628a666eaae9b25dd2f9666b62f38fc607fd0d0b7af6447117241643eb

  • SHA512

    1ebb524e5c215e1411006e415de15d521d01220e0bafbf571521c4cda24ae82346865a2c785321ebaf52d23191ccc9f9d720dd729bf1f183e107a9b35b2c2691

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    nnedimma080

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    nnedimma080

Targets

    • Target

      Sheet.......pdf.exe

    • Size

      437KB

    • MD5

      ac621011571eca9bfcc83b3457e8bc4e

    • SHA1

      9979d2ac17eaaeb8c65457212cd0b8f25db24dc4

    • SHA256

      c4ccd023eed63b7c47c69e1b08e267f4579cc54e9998f3767d7c1438127b6d1a

    • SHA512

      86715884fc9ce924919b37ec820ebf57f8acf7ede3eadd4aa1af71da9d606bf8e3f41f33b2e958bd11826377a7ccdd94f1328235fb457a41041592e30500b783

    • AgentTesla

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

    • AgentTesla Payload

    • Checks computer location settings

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

    • 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

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks