BREX_BANKER.ACE
Trojan-Banker.JS.Agent.x (KASPERSKY)
Windows
Threat Type: Trojan Spy
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet, Via email
This Trojan Spy arrives as an attachment to email messages mass-mailed by other malware/grayware or malicious users. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
4,962 bytes
Yes
24 Aug 2017
Connects to URLs/IPs, Steals information
Arrival Details
This Trojan Spy arrives as an attachment to email messages mass-mailed by other malware/grayware or malicious users.
It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Stolen Information
This Trojan Spy sends the gathered information via HTTP POST to the following URL:
- https://{BLOCKED}anotherrace.com/javascript/log3.php?logins=1
NOTES:
This is a Google browser extension named IDKEY STOR.
This malware looks for the following strings first before its executing malicious routine:
- "fetuar "
- "agar "
- "agamento "
- "sign "
- "ontinu "
- "inaliza "
- "cessa "
- "confirma "
- "ok "
- "ntra "
- "avan "
- "ogin "
- "uber "
It also triggers its malicious routine when following buttons are clicked:
- "#idSIButton9"
- "#signIn"
- "#login-signin"
- "#idbtn1"
It monitors all visited websites and gathers the following information:
- location.hostname
- location.href
- HTML input elements with the ff. types:
- password
- text
- tel
- number
- hidden
It also has bar-code(boletos) tampering capability targeting following legitimate banking websites:
- [banco.brades]co.com.br/html/classic/produtos-servicos/outros/2-via-de-b
- [ba]nkline.itau.com.br
- https://www.losangonet.com.br/Commons/asp/BarcodeImage.aspx?G=003&C={credentials}
It gathers tampering information from:
- https://{BLOCKED}anotherrace.com/salsa10/index.php?lendo=
SOLUTION
9.850
13.626.04
30 Aug 2017
13.627.00
31 Aug 2017
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Scan your computer with your Trend Micro product to delete files detected as BREX_BANKER.ACE. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
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