General

  • Target

    b1802121638afdbe414c77db5f708e4d9fa1b7536782069c64ded7af245066ca

  • Size

    396KB

  • Sample

    220521-b1jgbacgf4

  • MD5

    81f11b238fc3823903e5dd7120f4bb43

  • SHA1

    18bb943ada966d6c82c6d6eac7f5205a675b2bee

  • SHA256

    b1802121638afdbe414c77db5f708e4d9fa1b7536782069c64ded7af245066ca

  • SHA512

    7ce154776d0cb74e88041e45f56b3a3918c47260f2f6be3b929388874328843bfce1d8712a7d18c449efe76ae9953f52b0e256fea8ee8535c194da18457950b7

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    neighbor123

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    neighbor123

Targets

    • Target

      PO_4091.exe

    • Size

      480KB

    • MD5

      2f0bc79fec8651f0e45ecfbb229d0b7f

    • SHA1

      a3107ca93d12cbc6f411233aeb017e9391aac832

    • SHA256

      66a70b0fbd80aa28f3215b944260a8ce06a97d6e7f975cbd0100fba806b95016

    • SHA512

      ee9e741d3be90e33b5a9dc6977833bcae25d9e1472d2e146c68e80c75ee389eab3304bbb8ea2a6c8aae095d8bae5a1856964374bf3e0a118659c9536c3989980

    • 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