General

  • Target

    PO_55004.bin

  • Size

    948KB

  • Sample

    210129-cgx7y91a3x

  • MD5

    f46b66f9fe318ddf5ddd817680751e1b

  • SHA1

    89de80f3abd7057b00e771431c48dd115748e0c6

  • SHA256

    9bc27c28bbcda4a82940f28f070239600ede7afc78286e79f83fe3e1b4f80e1f

  • SHA512

    fdde483155c64db35a16f78f6adefd9413bb8cb9cdbdbdaed76125a0c2ad941e8028b32302174015763796b3813db6f3867622d319adef74a7b8b71d5be21472

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    server116.web-hosting.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    7213575aceACE@#$

Targets

    • Target

      PO_55004.bin

    • Size

      948KB

    • MD5

      f46b66f9fe318ddf5ddd817680751e1b

    • SHA1

      89de80f3abd7057b00e771431c48dd115748e0c6

    • SHA256

      9bc27c28bbcda4a82940f28f070239600ede7afc78286e79f83fe3e1b4f80e1f

    • SHA512

      fdde483155c64db35a16f78f6adefd9413bb8cb9cdbdbdaed76125a0c2ad941e8028b32302174015763796b3813db6f3867622d319adef74a7b8b71d5be21472

    • 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.

    • 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

Tasks