General

  • Target

    d2bb015e854f37e72248b11888db6c15d7ae134ba60b409be46aff0f46c89571

  • Size

    382KB

  • Sample

    220521-pe6avaaddq

  • MD5

    83834653aa8881c5859b65d328f0f0fd

  • SHA1

    41038061c3e8b9e38ae519c2187162860df2e052

  • SHA256

    d2bb015e854f37e72248b11888db6c15d7ae134ba60b409be46aff0f46c89571

  • SHA512

    9f31b4c2c9e8b741e142c47699034cb77628f58f22360c67e6f18b48032fe73f12a1b8b4cd7578c9aaa4da13f7c946f7567a2ffda0da2e2ac3ee95079da707d5

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    montana.co.ke
  • Port:
    587
  • Username:
    sales@montana.co.ke
  • Password:
    67brooke66

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    montana.co.ke
  • Port:
    587
  • Username:
    sales@montana.co.ke
  • Password:
    67brooke66

Targets

    • Target

      DHL SHIPPING DOCUMENTS.exe

    • Size

      413KB

    • MD5

      e23e136aa369ed40337780e8412de097

    • SHA1

      11e0a110b56219a177f9868fffbffe6b91b25edd

    • SHA256

      de0bc48e2efc61427a301db89cf4c3497e235cc0ef388db3a26ba94ac734de69

    • SHA512

      6ba7edb93d47d45cf58f944bf7df0dc4134cd10e58f38a26260132a5a36f1885b49aa378f8f8f5e787f13f94875cd1e555521dc30037a14eba3ba9695480bd31

    • AgentTesla

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

    • AgentTesla Payload

    • ReZer0 packer

      Detects ReZer0, a packer with multiple versions used in various campaigns.

    • 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