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General

  • Target

    Proforma invoice_pdf.exe

  • Size

    1016KB

  • Sample

    230106-wmfhqahe33

  • MD5

    65952e6521043c913df7baa481b6fe30

  • SHA1

    81345f3e07ebf087d2dc01d1370f8920855b17c8

  • SHA256

    7725d7b433b154bd610e8bc940c3aac2c874901fe65a07ebe4289e5b133493f3

  • SHA512

    d893346d1a1508dc012e9442c63bfc4c3ae881d93f15171462f4323de6251a10c72c4ef649c52b372aae2ecd7ff48051ec1c38cf01fb1b7175f9fbe416a3b385

  • SSDEEP

    24576:rrx3K9ZTjDwTdj8R5Bs2BNZGhPK9v5qntI2EOc/Hf8xK:xeRDwTB+jBNZGhPq5q62goK

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.huiijingco.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    lNLUrZT2

Targets

    • Target

      Proforma invoice_pdf.exe

    • Size

      1016KB

    • MD5

      65952e6521043c913df7baa481b6fe30

    • SHA1

      81345f3e07ebf087d2dc01d1370f8920855b17c8

    • SHA256

      7725d7b433b154bd610e8bc940c3aac2c874901fe65a07ebe4289e5b133493f3

    • SHA512

      d893346d1a1508dc012e9442c63bfc4c3ae881d93f15171462f4323de6251a10c72c4ef649c52b372aae2ecd7ff48051ec1c38cf01fb1b7175f9fbe416a3b385

    • SSDEEP

      24576:rrx3K9ZTjDwTdj8R5Bs2BNZGhPK9v5qntI2EOc/Hf8xK:xeRDwTB+jBNZGhPq5q62goK

    • 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.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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 Enterprise v6

Tasks