General

  • Target

    khcjryw.exe

  • Size

    294KB

  • Sample

    200713-jae7yrpf5s

  • MD5

    e3516cf406d891902c553d6a43efdc65

  • SHA1

    435d7a53989670d50578c9aff2b334187222088e

  • SHA256

    702e54b967e1c8aedcdfea2306b429b15e284b9b88439c9636182a36322e179b

  • SHA512

    1454b39a6a9ccea31c5a682baec84d42668a9787e66d4eda2df0a74b5d47a928b814bda29a51fe3374c3f315d07fcaa50df0d926e8c5ee6bd8f521ba2d068d92

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.skibokshotell.no/
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    u{psFslG@7Ly

  • Protocol:
    ftp
  • Host:
    ftp://ftp.skibokshotell.no/
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    u{psFslG@7Ly

Targets

    • Target

      khcjryw.exe

    • Size

      294KB

    • MD5

      e3516cf406d891902c553d6a43efdc65

    • SHA1

      435d7a53989670d50578c9aff2b334187222088e

    • SHA256

      702e54b967e1c8aedcdfea2306b429b15e284b9b88439c9636182a36322e179b

    • SHA512

      1454b39a6a9ccea31c5a682baec84d42668a9787e66d4eda2df0a74b5d47a928b814bda29a51fe3374c3f315d07fcaa50df0d926e8c5ee6bd8f521ba2d068d92

    • AgentTesla

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

    • AgentTesla Payload

    • Looks for VirtualBox Guest Additions in registry

    • Drops file in Drivers directory

    • 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.

    • Maps connected drives based on registry

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks