General

  • Target

    SWIFT-EUR 38650_06122022.xls

  • Size

    1.5MB

  • Sample

    221206-hqx1aage6s

  • MD5

    21f2f35e1dbb15d23b42df683f031c67

  • SHA1

    31274255f4db8d5153668ccd2f8ffb1730e5d53a

  • SHA256

    ec197e8b1475730b15e799ccc38cca8d6ffca376e99b2cc81d2fc33b428e4cd7

  • SHA512

    a35ae509bb0e39df35982f22a8d7ad14e3d9da0d2722fc038d584807a6fd6a961c62a7f67f244cdfcefb9121306addff08d01717ace77a7f94f2ea60edd80cac

  • SSDEEP

    24576:vzxXXXXXXXXXXXXUXXXXXXXXXXXXXXXXD/mkpr5XXXXXXXXXXXXUXXXXXXXrXXXc:wMG0pS+YUQ

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      SWIFT-EUR 38650_06122022.xls

    • Size

      1.5MB

    • MD5

      21f2f35e1dbb15d23b42df683f031c67

    • SHA1

      31274255f4db8d5153668ccd2f8ffb1730e5d53a

    • SHA256

      ec197e8b1475730b15e799ccc38cca8d6ffca376e99b2cc81d2fc33b428e4cd7

    • SHA512

      a35ae509bb0e39df35982f22a8d7ad14e3d9da0d2722fc038d584807a6fd6a961c62a7f67f244cdfcefb9121306addff08d01717ace77a7f94f2ea60edd80cac

    • SSDEEP

      24576:vzxXXXXXXXXXXXXUXXXXXXXXXXXXXXXXD/mkpr5XXXXXXXXXXXXUXXXXXXXrXXXc:wMG0pS+YUQ

    • AgentTesla

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • 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.

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook profiles

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Exploitation for Client Execution

1
T1203

Defense Evasion

Scripting

1
T1064

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks