General

  • Target

    INV-00241.exe

  • Size

    654KB

  • Sample

    221206-l8g9bsbf3z

  • MD5

    4b9d7b1ea4b94c7b9a9c8a7d85578c9d

  • SHA1

    bd580c3c037c244c4c5b820dbb017e14b032b4ec

  • SHA256

    3e8e2a2868f0e729a298541b51105ca23c60b0ffaa2c7b7c89e8a1edc0b2eab7

  • SHA512

    b3ead2fbf3b0e408c0cd2dcc4738c84967321a7c7fe0d673ed7df5400387084f627b8ee7ad6075cff6d1f2f6127d4c85ea9797f12ddf5ab4948fedec82752119

  • SSDEEP

    6144:7BnJ+58yUPAQVBXw5EPSzoBoe2ZP7e4VimiMxu2Kd4Dic8caelU:D+9UPAuA51s2zMcBjxRKrczaL

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.crownoffice.xyz
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    GRACEoverflow123@

Targets

    • Target

      INV-00241.exe

    • Size

      654KB

    • MD5

      4b9d7b1ea4b94c7b9a9c8a7d85578c9d

    • SHA1

      bd580c3c037c244c4c5b820dbb017e14b032b4ec

    • SHA256

      3e8e2a2868f0e729a298541b51105ca23c60b0ffaa2c7b7c89e8a1edc0b2eab7

    • SHA512

      b3ead2fbf3b0e408c0cd2dcc4738c84967321a7c7fe0d673ed7df5400387084f627b8ee7ad6075cff6d1f2f6127d4c85ea9797f12ddf5ab4948fedec82752119

    • SSDEEP

      6144:7BnJ+58yUPAQVBXw5EPSzoBoe2ZP7e4VimiMxu2Kd4Dic8caelU:D+9UPAuA51s2zMcBjxRKrczaL

    • AgentTesla

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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Accesses Microsoft Outlook profiles

    • 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

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks