General

  • Target

    Mvyfnzkjh1.exe

  • Size

    628KB

  • Sample

    201204-ls7563xda2

  • MD5

    654cecf1ecadee45d5bfe723fadd3224

  • SHA1

    4be4a787186784dcfa0f3de0802d3e5abcb86963

  • SHA256

    eb30592d078a3051e00e887c71cc415f1e80f20f43f1f60b808c5cb2be9cb5c6

  • SHA512

    13ea6eb2831aef651c2184da9c5f6a9dc950bee99521c47a86557d45d9913c5cf439d4fed4f66397a63d7f5d7ee5c1335058265665d80ac5f9ab9c3971d19391

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.impresstilecleaners.com.au
  • Port:
    587
  • Username:
    gmt@impresstilecleaners.com.au
  • Password:
    Smith@222

Targets

    • Target

      Mvyfnzkjh1.exe

    • Size

      628KB

    • MD5

      654cecf1ecadee45d5bfe723fadd3224

    • SHA1

      4be4a787186784dcfa0f3de0802d3e5abcb86963

    • SHA256

      eb30592d078a3051e00e887c71cc415f1e80f20f43f1f60b808c5cb2be9cb5c6

    • SHA512

      13ea6eb2831aef651c2184da9c5f6a9dc950bee99521c47a86557d45d9913c5cf439d4fed4f66397a63d7f5d7ee5c1335058265665d80ac5f9ab9c3971d19391

    • AgentTesla

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

    • AgentTesla Payload

    • 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.

    • Adds Run key to start application

    • 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

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Tasks