General

  • Target

    QUOTATION.docx.doc

  • Size

    295KB

  • Sample

    240508-jqdr3sab9y

  • MD5

    8feb6e9bf1782987b2d83aa5a39ae5d8

  • SHA1

    49b44a52ab776e48377c6d56a4d7b09f717ae555

  • SHA256

    7ccfa149c82865c7bef38d83a3cfe955fcbe8aad03a61c05b3281b1a9dd2e858

  • SHA512

    965c11aabf49e32de333d2b2c76928c74146305174f33bc82bd59f9408800f994cfa5e987fb46122ac7970203de799bb83ee70afadc60aa9bc985476aecbceea

  • SSDEEP

    6144:WGK/46IXgfuFO6S951ndPJ8fUeuCf9fLhCMG8f/W/:WGKgwfu4h1dPifUeuCf9fFZpfs

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6981982105:AAGJZG7U4ELI-QLExHS4a6AlsLp__P5_opc/

Targets

    • Target

      QUOTATION.docx.doc

    • Size

      295KB

    • MD5

      8feb6e9bf1782987b2d83aa5a39ae5d8

    • SHA1

      49b44a52ab776e48377c6d56a4d7b09f717ae555

    • SHA256

      7ccfa149c82865c7bef38d83a3cfe955fcbe8aad03a61c05b3281b1a9dd2e858

    • SHA512

      965c11aabf49e32de333d2b2c76928c74146305174f33bc82bd59f9408800f994cfa5e987fb46122ac7970203de799bb83ee70afadc60aa9bc985476aecbceea

    • SSDEEP

      6144:WGK/46IXgfuFO6S951ndPJ8fUeuCf9fLhCMG8f/W/:WGKgwfu4h1dPifUeuCf9fFZpfs

    • AgentTesla

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Abuses OpenXML format to download file from external location

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • 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 Enterprise v15

Tasks