General

  • Target

    23c415fced41205b0d6036306a611430af76aaf221ac0bddf2871ce787acdfda.exe

  • Size

    996KB

  • Sample

    240517-bj2xbsad6w

  • MD5

    e0aa136a77f5834148b0a65add5e124e

  • SHA1

    a56bf43b73d16b679d6cf6c01c2429bec93271bf

  • SHA256

    23c415fced41205b0d6036306a611430af76aaf221ac0bddf2871ce787acdfda

  • SHA512

    4946531f370a7891545b6dcd0c8561d8b297854a35437825fb36c538dde76e2e24de146b97abc6a058ae5bea7d9bcba46d9646f4d45eddc791feab4ef41bfea6

  • SSDEEP

    24576:yP19JSNIlIy4lWOeJChP8hRiIRiBedx3:yPtaIlIhjUo8bkU

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot7060813422:AAFqFKdMJlLvutqPAnHO4f8vnk2X1rQvsl0/

Targets

    • Target

      23c415fced41205b0d6036306a611430af76aaf221ac0bddf2871ce787acdfda.exe

    • Size

      996KB

    • MD5

      e0aa136a77f5834148b0a65add5e124e

    • SHA1

      a56bf43b73d16b679d6cf6c01c2429bec93271bf

    • SHA256

      23c415fced41205b0d6036306a611430af76aaf221ac0bddf2871ce787acdfda

    • SHA512

      4946531f370a7891545b6dcd0c8561d8b297854a35437825fb36c538dde76e2e24de146b97abc6a058ae5bea7d9bcba46d9646f4d45eddc791feab4ef41bfea6

    • SSDEEP

      24576:yP19JSNIlIy4lWOeJChP8hRiIRiBedx3:yPtaIlIhjUo8bkU

    • 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 binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

    • 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.

    • 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