General

  • Target

    YKRAB010B_KHE_Preminary Packing List.xlsx.exe

  • Size

    1.1MB

  • Sample

    210222-wxqjbynprj

  • MD5

    9a06197daf40639c61cc898e8db91340

  • SHA1

    ffe7c6850523c7d4c7336dee86e65662d8a228db

  • SHA256

    7a44d661f4c1ac837b0045dc28562b098cb66b5e371bda8a79ef00000fa66a65

  • SHA512

    c90c7d9d0809e266a57110681078aaec2e224a01c567d7c6c115300b046ff1ea15d3b9f37d58aaf003e24a33714caa63b765275947515d7a45228eb208b4e277

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.hyshippingcn.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    e*u@qkS4

Targets

    • Target

      YKRAB010B_KHE_Preminary Packing List.xlsx.exe

    • Size

      1.1MB

    • MD5

      9a06197daf40639c61cc898e8db91340

    • SHA1

      ffe7c6850523c7d4c7336dee86e65662d8a228db

    • SHA256

      7a44d661f4c1ac837b0045dc28562b098cb66b5e371bda8a79ef00000fa66a65

    • SHA512

      c90c7d9d0809e266a57110681078aaec2e224a01c567d7c6c115300b046ff1ea15d3b9f37d58aaf003e24a33714caa63b765275947515d7a45228eb208b4e277

    • AgentTesla

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

    • AgentTesla Payload

    • Executes dropped EXE

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • 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.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Tasks