General

  • Target

    rfq.exe

  • Size

    3.5MB

  • Sample

    240920-v2cjyayekq

  • MD5

    16169512f2e05c8e01449e52ea10b525

  • SHA1

    0724ad3ada6f7b87d0be9fe051da3e50449d9775

  • SHA256

    0b232cd5b3cd6d2ba6d618a0bb68711901d2746be6dbdc67df1242459e0e5c5a

  • SHA512

    7487faa357cdf96653d84d4b028725fa8650614bf6801ca61c78f2a4f42f8ac288172ae5eaa52365143aaf7edb9fd62ebdc40a6e578b897875eb682f8e299611

  • SSDEEP

    98304:7trbTA1R2DHQaFMlXIolnL8eckZ6uWvBN3:hc1zC8YolnrckZ7K3

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Family

redline

Botnet

FOZ

C2

212.162.149.53:2049

Targets

    • Target

      rfq.exe

    • Size

      3.5MB

    • MD5

      16169512f2e05c8e01449e52ea10b525

    • SHA1

      0724ad3ada6f7b87d0be9fe051da3e50449d9775

    • SHA256

      0b232cd5b3cd6d2ba6d618a0bb68711901d2746be6dbdc67df1242459e0e5c5a

    • SHA512

      7487faa357cdf96653d84d4b028725fa8650614bf6801ca61c78f2a4f42f8ac288172ae5eaa52365143aaf7edb9fd62ebdc40a6e578b897875eb682f8e299611

    • SSDEEP

      98304:7trbTA1R2DHQaFMlXIolnL8eckZ6uWvBN3:hc1zC8YolnrckZ7K3

    • AgentTesla

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

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Drops startup file

    • 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.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Looks up external IP address via web service

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

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks