GKICKG Ransomware
Izsiljevalska programska oprema ostaja ena najbolj škodljivih kibernetskih groženj, ki lahko zaklene kritične podatke in zahteva pretirane odkupnine za svojo objavo. Izsiljevalska programska oprema GKICKG, na novo identificirana različica, predstavlja veliko tveganje za podjetja s šifriranjem podatkov in zbiranjem občutljivih informacij podjetja. Razumevanje delovanja te zlonamerne programske opreme in izvajanje močnih varnostnih ukrepov je ključnega pomena za zmanjšanje tveganja okužbe.
Kazalo
Mehanika izsiljevalske programske opreme GKICKG
Ko se GKICKG infiltrira v sistem, šifrira datoteke in doda edinstven ID žrtve, ki mu sledi končnica '.GKICKG'. Datoteka z imenom 1.png bi se na primer preimenovala v »1.png.{FFE2FECE-1A8A-EBC5-3CA4-12479033427D}.GKICKG«, zaradi česar bi bila nedostopna.
Po šifriranju izsiljevalska programska oprema pošlje obvestilo o odkupnini ('README.TXT'), ki žrtev opozori, da je njeno omrežje ogroženo. Napadalci trdijo, da so pridobili občutljive podatke, vključno z:
- Omrežne poverilnice
- Proizvodne in finančne evidence
- Podatki o zaposlenih in strankah
Obvestilo o odkupnini grozi s hudimi posledicami, če žrtev poskuša odstraniti izsiljevalsko programsko opremo, obnoviti datoteke z nepooblaščenimi metodami ali kontaktirati organe pregona. Napadalci zahtevajo plačilo za dešifriranje, sčasoma povečujejo odkupnino in opozarjajo, da bo zavrnitev plačila povzročila uhajanje podatkov in ponavljajoče se napade.
Nevarnost plačila odkupnine
Strokovnjaki za kibernetsko varnost močno odsvetujejo izpolnjevanje kakršnih koli zahtev kibernetskih kriminalcev iz več razlogov:
- Brez jamstva za izterjavo – tudi če je plačana odkupnina, kibernetski kriminalci morda ne bodo zagotovili ključa za dešifriranje.
- Spodbujanje kriminalnih dejavnosti – plačilo odkupnine spodbuja nadaljnji razvoj in napade izsiljevalske programske opreme.
- Ponavljajoče ciljanje – Podjetja, ki plačujejo, so pogosto znova tarča, saj se nanje gleda kot na prostovoljne žrtve.
Edini zanesljiv način za obnovitev šifriranih datotek je z varnimi varnostnimi kopijami, ki jih napad ni ogrozil.
Kako se širi izsiljevalska programska oprema GKICKG
Kibernetski kriminalci uporabljajo več tehnik za distribucijo izsiljevalske programske opreme GKICKG, pri čemer se za sprožitev okužb pogosto zanašajo na človeško napako. Pogosti prenašalci okužb vključujejo:
- E-poštna sporočila z lažnim predstavljanjem – goljufive priloge ali povezave, prikrite kot zakonita poslovna komunikacija.
- Naključni prenosi – nenamerni prenosi zlonamerne programske opreme z ogroženih ali zlonamernih spletnih mest.
- Trojanska zakulisna vrata – skrita zlonamerna programska oprema, vdelana v piratsko programsko opremo ali nezakonita orodja za aktiviranje.
- Zlonamerno oglaševanje – zlonamerni oglasi, ki ob kliku prikažejo zlonamerno programsko opremo.
- Ogrožena omrežja in naprave USB – vedenje, podobno črvu, ki se širi po povezanih sistemih.
Poznavanje teh metod napada je prvi korak pri preprečevanju okužbe.
Najboljše varnostne prakse za obrambo pred izsiljevalsko programsko opremo
Podjetja in posamezniki bi morali sprejeti večplastni varnostni pristop, da bi zmanjšali tveganje okužbe z izsiljevalsko programsko opremo GKICKG in drugimi grožnjami zlonamerne programske opreme.
- Strategija varnostnega kopiranja: Vaša zadnja obrambna črta : vzdržujte redne varnostne kopije brez povezave na varnih zunanjih diskih ali v oblaku za shranjevanje z različicami. Prepričajte se, da so varnostne kopije prekinjene, ko niso v uporabi, da preprečite, da bi jih šifrirala izsiljevalska programska oprema.
- E-pošta in spletna varnost : Izogibajte se odpiranju nepričakovanih e-poštnih prilog ali povezav, tudi iz zaupanja vrednih virov. Uporabite orodja za filtriranje e-pošte, da odkrijete in blokirate poskuse lažnega predstavljanja. Bodite previdni pri nujnih ali grozečih sporočilih, ki zahtevajo takojšnje ukrepanje.
- Zaščita končne točke in varnost omrežja : Namestite priznano programsko opremo proti zlonamerni programski opremi in jo posodabljajte. Omogočite zaščito v realnem času in funkcije za zaznavanje izsiljevalske programske opreme v varnostnih orodjih. Za odkrivanje nenavadnega prometa in morebitnih vdorov uporabite požarne zidove in nadzor omrežja.
- Okrepitev programske opreme in sistema : Posodabljajte operacijske sisteme, aplikacije in varnostno programsko opremo, da popravite ranljivosti. Onemogočite izvajanje makrov v Microsoft Officeu, da preprečite zlonamerno izkoriščanje dokumentov. Omejite skrbniške privilegije, da omejite pravice izvajanja zlonamerne programske opreme.
Izvedite načrte odzivanja na incidente, da zaposleni vedo, kaj storiti v primeru okužbe. Spodbujajte kulturo varnosti, kjer se sumljiva dejavnost takoj prijavi.
Končne misli: Preprečevanje je najboljša obramba
Izsiljevalska programska oprema GKICKG poudarja vse večjo sofisticiranost operacij kibernetskega kriminala. Ker je dešifriranje izsiljevalske programske opreme redko mogoče brez napadalčevega ključa, je preprečevanje napada veliko lažje kot reševanje posledic. Organizacije in uporabniki lahko na splošno zmanjšajo tveganje, da bi postali žrtve groženj izsiljevalske programske opreme, tako da izvajajo močne varnostne ukrepe, izvajajo varne spletne navade in vzdržujejo varne varnostne kopije.
Sporočila
Najdena so bila naslednja sporočila, povezana z GKICKG Ransomware:
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Hello my dear friend (Do not scan the files with antivirus in any case. In case of data loss, the consequences are yours) Your data is encrypted Unfortunately for you, a major IT security weakness left you open to attack, your files have been encrypted The only method of recovering files is to purchase decrypt tool and unique key for you. If you want to recover your files, write us to this e-mail: data_guram@tutamail.com In case of no answer in 24 hours write us to this backup e-mail: guram24@onionmail.org Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. Contact us soon, because those who don't have their data leaked in our press release blog and the price they'll have to pay will go up significantly. Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software - it may cause permanent data loss. We are always ready to cooperate and find the best way to solve your problem. The faster you write - the more favorable conditions will be for you. Our company values its reputation. We give all guarantees of your files decryption. What are your recommendations? - Never change the name of the files, if you want to manipulate the files, be sure to back them up. If there are any problems with the files, we are not responsible for them. - Never work with intermediary companies because they charge you more money.Don't be afraid of us, just email us. Sensitive data on your system was DOWNLOADED. If you DON'T WANT your sensitive data to be PUBLISHED you have to act quickly. Data includes: - Employees personal data, CVs, DL, SSN. - Complete network map including credentials for local and remote services. - Private financial information including: clients data, bills, budgets, annual reports, bank statements. - Manufacturing documents including: datagrams, schemas, drawings in solidworks format - And more... What are the dangers of leaking your company's data. First of all, you will receive fines from the government such as the GDRP and many others, you can be sued by customers of your firm for leaking information that was confidential. Your leaked data will be used by all the hackers on the planet for various unpleasant things. For example, social engineering, your employees' personal data can be used to re-infiltrate your company. Bank details and passports can be used to create bank accounts and online wallets through which criminal money will be laundered. On another vacation trip, you will have to explain to the FBI where you got millions of dollars worth of stolen cryptocurrency transferred through your accounts on cryptocurrency exchanges. Your personal information could be used to make loans or buy appliances. You would later have to prove in court that it wasn't you who took out the loan and pay off someone else's loan. Your competitors may use the stolen information to steal technology or to improve their processes, your working methods, suppliers, investors, sponsors, employees, it will all be in the public domain. You won't be happy if your competitors lure your employees to other firms offering better wages, will you? Your competitors will use your information against you. For example, look for tax violations in the financial documents or any other violations, so you have to close your firm. According to statistics, two thirds of small and medium-sized companies close within half a year after a data breach. You will have to find and fix the vulnerabilities in your network, work with the customers affected by data leaks. All of these are very costly procedures that can exceed the cost of a ransomware buyout by a factor of hundreds. It's much easier, cheaper and faster to pay us the ransom. Well and most importantly, you will suffer a reputational loss, you have been building your company for many years, and now your reputation will be destroyed. Do not go to the police or FBI for help and do not tell anyone that we attacked you. They won't help and will only make your situation worse. In 7 years not a single member of our group has been caught by the police, we are top-notch hackers and never leave a trace of crime. The police will try to stop you from paying the ransom in any way they can. The first thing they will tell you is that there is no guarantee to decrypt your files and delete the stolen files, this is not true, we can do a test decryption before payment and your data will be guaranteed to be deleted because it is a matter of our reputation, we make hundreds of millions of dollars and we are not going to lose income because of your files. It is very beneficial for the police and the FBI to let everyone on the planet know about the leak of your data, because then your state will receive fines under GDPR and other similar laws. The fines will go to fund the police and FBI. The police and FBI will not be able to stop lawsuits from your customers for leaking personal and private information. The police and FBI will not protect you from repeat attacks. Paying us a ransom is much cheaper and more profitable than paying fines and legal fees. If you do not pay the ransom, we will attack your company again in the future. |
