General

  • Target

    FACTURAS.js

  • Size

    944B

  • Sample

    231208-reet1abgf4

  • MD5

    25d05d7da40ef51ff088cfbd3746a74f

  • SHA1

    3c08a86611c54e2bcb77f45f12442d271b5d806c

  • SHA256

    4040480a88c5deea6892453bf0b1cd86d29b879f00f04bce1b8739e0f08290cc

  • SHA512

    903489a9cb106d4bef03ad0073015a6007743331616facd49e36ce4661076c1e013191abd613308c6801890987b317af2483d974d8b694a21f0cee2cbcf5469e

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6846062945:AAGabPi9vxKPIKfVbRT2fLEd-Rnu3DtD_6I/

Targets

    • Target

      FACTURAS.js

    • Size

      944B

    • MD5

      25d05d7da40ef51ff088cfbd3746a74f

    • SHA1

      3c08a86611c54e2bcb77f45f12442d271b5d806c

    • SHA256

      4040480a88c5deea6892453bf0b1cd86d29b879f00f04bce1b8739e0f08290cc

    • SHA512

      903489a9cb106d4bef03ad0073015a6007743331616facd49e36ce4661076c1e013191abd613308c6801890987b317af2483d974d8b694a21f0cee2cbcf5469e

    • AgentTesla

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • 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.

MITRE ATT&CK Enterprise v15

Tasks