General

  • Target

    69df6912fddeb16d3db5ef60c59734d4f49270a39a3f45937a5640c801438e51

  • Size

    337KB

  • Sample

    220521-dbrshafda7

  • MD5

    48c80f9beb93fa366aa56a920bc0d363

  • SHA1

    9b1131ee5b03567d2e67b434fb674c48b22c08ee

  • SHA256

    69df6912fddeb16d3db5ef60c59734d4f49270a39a3f45937a5640c801438e51

  • SHA512

    bd243ec96f8867ff2825ee59b25b40649c2504bf2fea94280d8843c07e7e7d7482b00dc8da2e0184569add5348d99b139766890086fb8143bb83e98da186aafd

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.knmbz.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    kJubHQs8

Targets

    • Target

      INV_02072020_882779-9887.exe

    • Size

      422KB

    • MD5

      54b3e81b8eee7202839129963792ae3f

    • SHA1

      314b6a5ade1f37005dc47f1c1d64bd09ec1d3e65

    • SHA256

      b4662f32f5b44f4f907bd3abdef185780feade88234ca21aeaa5c82216f8c41b

    • SHA512

      641ca5233571bc91298c5def3999dc1aea1ff4c75ebb2bdb5f424d0f0726cb3e9c30dbfc24e26a95a23b9dcd3dfe47e12b071eefb6a0183875570e9b5578a7d0

    • 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