General

  • Target

    SecuriteInfo.com.Variant.Bulz.233365.3916.19181

  • Size

    633KB

  • Sample

    201126-2d7wld1j2s

  • MD5

    47f90575c21bffd769880ab07803d12d

  • SHA1

    7711458983aef786e8807f8252b78b49fae27032

  • SHA256

    ec6609022ecc725ca1b77d8e968d79cda6beedc90c3480c7fc0ca8682a40269c

  • SHA512

    95c70e7bf7718d1fea37776c4281118b639e512a0255779a734c953f67f7ae32e1b3925d85d628b92c839781010ef89bf243575d9d4ef6892cbb85627eb516b6

Malware Config

Extracted

Family

agenttesla

C2

http://baharanvilla.ir/wp-includes/z/inc/d51b6e0eedd7ee.php

Targets

    • Target

      SecuriteInfo.com.Variant.Bulz.233365.3916.19181

    • Size

      633KB

    • MD5

      47f90575c21bffd769880ab07803d12d

    • SHA1

      7711458983aef786e8807f8252b78b49fae27032

    • SHA256

      ec6609022ecc725ca1b77d8e968d79cda6beedc90c3480c7fc0ca8682a40269c

    • SHA512

      95c70e7bf7718d1fea37776c4281118b639e512a0255779a734c953f67f7ae32e1b3925d85d628b92c839781010ef89bf243575d9d4ef6892cbb85627eb516b6

    • 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.

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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

Collection

Data from Local System

3
T1005

Tasks