General

  • Target

    unzz.exe

  • Size

    315KB

  • Sample

    230210-zlfnwacc88

  • MD5

    70a72d5298414f3d38bc10e694a858d9

  • SHA1

    a15a8053add9243366f406145a25f21cd81bd4b2

  • SHA256

    95bb664ebb57018a7c4e89ec8c9a78bc3aab2e580ac415a51e8416e292206afe

  • SHA512

    b10801c6a316cef36baf5968ce02c046d50df2404cad74f2ed82524c011029a55d8d5edcb58931efa738c0cc49d036a3d4b1d26f029130f234cfdd374ea2a0bc

  • SSDEEP

    6144:vYa6Bb6oGPEOuppH26oEMHaseG64X1uD1HWFJzJRNLuFHhLHq:vYLb6FsPR2YMHas9X1BzobK

Malware Config

Targets

    • Target

      unzz.exe

    • Size

      315KB

    • MD5

      70a72d5298414f3d38bc10e694a858d9

    • SHA1

      a15a8053add9243366f406145a25f21cd81bd4b2

    • SHA256

      95bb664ebb57018a7c4e89ec8c9a78bc3aab2e580ac415a51e8416e292206afe

    • SHA512

      b10801c6a316cef36baf5968ce02c046d50df2404cad74f2ed82524c011029a55d8d5edcb58931efa738c0cc49d036a3d4b1d26f029130f234cfdd374ea2a0bc

    • SSDEEP

      6144:vYa6Bb6oGPEOuppH26oEMHaseG64X1uD1HWFJzJRNLuFHhLHq:vYLb6FsPR2YMHas9X1BzobK

    • 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

    • 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 v6

Tasks