General

  • Target

    50ecd762337c970aeb98ed3c29827b72235ff69d3eff290c77cf44a80752151b

  • Size

    496KB

  • Sample

    220521-dh3tcafgb9

  • MD5

    e25e1bd64bc8224dfc9a643ce6888bbc

  • SHA1

    f3949c02e32b819a3464ee85141710daa57a7cb6

  • SHA256

    50ecd762337c970aeb98ed3c29827b72235ff69d3eff290c77cf44a80752151b

  • SHA512

    af67a5e693cf93026e78ada0768e909974946d7fafb79760691062314e6081d9a9e22534c6bda88ca2ae7781779c172c7be64c3746f627e246e5cd33821b5e68

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    killdemall007

Targets

    • Target

      Payment_Copy.PDF.scr

    • Size

      603KB

    • MD5

      6f4ff4d406d6917c9261333ed9bbc58c

    • SHA1

      9ab4630d7a4323ab119535990b008130890d178c

    • SHA256

      190be18ceb220a947bf797e07e27b41987d707f00ce1774e05998a6682482f43

    • SHA512

      7a388d5f6fd968fac1cd31f4c48b7eaa140986bab705c1694c2390072eda4995095ee2ead609c4e995a92c3913c6a3eb22205db80998ab12b8dfb9c6a22afd12

    • AgentTesla

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

    • AgentTesla Payload

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • 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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

2
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks