General

  • Target

    6136140c3fc9c7772b4056f557a71c6cb9394baa72267d569699adf7c2c25b04

  • Size

    557KB

  • Sample

    220521-aq4ttsdegq

  • MD5

    9b8b72e23ae23ddb973152b45a880951

  • SHA1

    1a5a169201a795a4dd409c46f3ff296f73e54ca3

  • SHA256

    6136140c3fc9c7772b4056f557a71c6cb9394baa72267d569699adf7c2c25b04

  • SHA512

    882b4d790cf9414571d6fa376ec496a1f9175354fd155a5e99fe962ce82a635ed41dece1f099e9bb844fe49098c6b983d9b84aaa06880bd78aa85defff771ff0

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.kem-o-keen.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    UOtsMwB6

Targets

    • Target

      DHL RECEIPT.exe

    • Size

      708KB

    • MD5

      2857f2606b0aad5becb3812accd08f29

    • SHA1

      1e741a295b374414a781f55335110f23bf7b5085

    • SHA256

      cf55a94219615826bd23867c7aa39fa8a67824f8f7488ca9d2876fd689b47efe

    • SHA512

      4a9cb0f76e0510c20847c4d09da8464eac6b2ce0a469c3459e292e04be4d163f500a35de8dfedebd66900f0959e4aff80fce55a8e342bd04dfb9f294975eb59d

    • 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