General

  • Target

    a0a7a1d5d75aea9c08518326729af19a3066114db615418d1a13a4af7b6ee59b.rar

  • Size

    707KB

  • Sample

    240612-ccfwysyckp

  • MD5

    a4c37608c4fced112767079f5a1821e3

  • SHA1

    21d53e3fc9710d3f84f4d375f3d9b6861e8579f9

  • SHA256

    a0a7a1d5d75aea9c08518326729af19a3066114db615418d1a13a4af7b6ee59b

  • SHA512

    01688dcae0f11710d9708c0935b816724f69aeef93ca1bb4713b4dcba61a640430cfafcbd270db43527cf6e8ad13fef355ac35406b5414b5e0bf67a14471ee11

  • SSDEEP

    12288:9EvqQk93tWk06qBEl1g5PbgCYOCSjaOZdViuJHwLpBjz964kLk83gEPe1lbBVK:9Ey7dWk3aEA5TgvZSnZiuJHwLH9iLk0b

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      Product Order Inquiry - SSTF Co., Ltd #82928733.exe

    • Size

      2.3MB

    • MD5

      285fee9261cc0f1ff6b69c10b6a2cbc9

    • SHA1

      058613d120360a7cc86901a316fb9704c0596c16

    • SHA256

      985f3a90e2586583a9913bc78484f4b3fb824bb08d9ccac14f229df08928477a

    • SHA512

      710ea284e0ac25491a5129c1c968c418673a0d191bfe25baae8d77cd0701fda357adbf68adf06e6b0d08221dbfe5b66d9a5ffb2244297b907fa7d799f63a2278

    • SSDEEP

      3072:k9LlfupJWPlE3ziE1wKtV5iEn+hFWd/7Udrfm2ukEg0Xvgb4TlvAYVQWfLoU8mow:kJ

    • AgentTesla

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

    • Detect packed .NET executables. Mostly AgentTeslaV4.

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects executables packed with or use KoiVM

    • Detects executables referencing Windows vault credential objects. Observed in infostealers

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • Detects executables referencing many file transfer clients. Observed in information stealers

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks