LockerGoga ransomware

By Roshan Pokhrel, Associate Engineering Manager, LogPoint

After rearing its ugly head in early 2019 by attacking French consulting firm Altran Technologies, LockerGoga ransomware strikes again! This time the unfortunate victim is Norsk Hydro, Scandinavia’s largest and internationally renowned producer of aluminium.

Eivind Kallevik, CFO of Norsk Hydro, stated that internal IT detected the attack had affected computer systems in multiple business areas at around 12AM CET on Monday. He also went on to assure the public that despite the disruption, Norsk Hydro employees and civilians were not targeted in anyway by this attack.

LockerGoga shows similarities to other recent large scale ransomware attacks such as CottleAkela or Gorgon. These malware are designed to access and encrypt sensitive user data on infected devices by either sending out malicious emails or using other forms of social engineering to trick victims into downloading a malicious file or accessing a link prompting the automatic download of said file and/or using exploit kits.

Once the victim is lured into opening the malicious attachment, the ransomware encrypts the files by using AES or a similar algorithm. In the case of LockerGoga, the attackers used the RSA- 4096 and AES-256 cryptography algorithms with the following attachment:

.locked!?“
„.locked“

A README-NOW.txt noted:

Source

In the case of LockerGoga, the targeted file extensions included: pdf, .ppt, .pot, .potx, .ppsx, .sldx, .doc, .dot, .dotx, .docb, .xlm, .xlsx, .xltx, .pps, .pptx, .xlsb, .xlw, and .wbk.

How does LogPoint SIEM detect ransomware?

LogPoint LockerGoga malware application provides you with a comprehensive package to detect any malware infection in just a few simple steps. The list of updated IoC’s required to run the application are as follows:

Indicator of Compromise

The red flags indicating that your system might have been compromised.

Hash

	MD5	SHA1	SHA256	File Name	Malware Category
1	2bd24204750964b342f3ef941d693503	d1c0138baa345a8d912cc4519d10e0bde3f1d059	0e874661b6bc116f18230dd6b50f792a944f4ba8e3f58edf1f128517ce8d44ee	ransomware.rar	Trojan
2	a5bc1f94e7505a2e73c866551f7996f9	7dea7ff735023418b902d093964028aefbc486a5	14e8a8095426245633cd6c3440afc5b29d0c8cd4acefd10e16f82eb3295077ca	worker32	Trojan
3	d5a740b43e0b8487b475367ebffa9a78	d7760deb9b0b5647b3b297cda7533b7c3f0fd035	39e298627215ed3bed76686f52eb741335195c2cd09b69181892b4fa9f53f514	READ-ME-NOW.txt	Win32.Outbreak
4	faf4de4e1c5d8e4241088c90cfe8eddd	fcd241fdcd462199f2907ca34c73ce9c89b03e5f	47f5a231f7cd0e36508ca6ff8c21c08a7248f0f2bd79c1e772b73443597b09b4	hvwfcsky	Trojan
5	9cad8641ac79688e09c5fa350aef2094	3da0a217bbda09561780f52f163a6aafeb721d60	5b0b972713cd8611b04e4673676cdff70345ac7301b2c23173cdfeaff564225c	worker32	Trojan
6	3ebca21b1d4e2f482b3eda6634e89211	37cdd1e3225f8da596dc13779e902d8d13637360	6e69548b1ae61d951452b65db15716a5ee2f9373be05011e897c61118c239a77	worker32	Trojan
7	b3d3da12ca3b9efd042953caa6c3b8cd	34fb03a35e723d27e99776ed3e81967229b3afe1	7852b47e7a9e3f792755395584c64dd81b68ab3cbcdf82f60e50dc5fa7385125	pchgdage	Trojan
8	443877e0b82c08089d5e428180f2b0d8	26d96eb7390fc9565a3016e907840e263380b301	7a059301a1c6198bb3a2cb2ae8cd358486f806ea1b202c4ca8613846a9c3cc64	pchgdage	Trojan
9	7e3f8b6b7ac0565bfcbf0a1e3e6fcfbc	b2a701225c8c7f839be3c5009d52b4421063d93e	7bcd69b3085126f7e97406889f78ab74e87230c11812b79406d723a80c08dd26	zzbdrimp	Trojan
10	c2da604a2a469b1075e20c5a52ad3317	442ed0cac2abe062d8e630f3ece803af687751db	88d149f3e47dc337695d76da52b25660e3a454768af0d7e59c913995af496a0f	tgytutrc	Trojan
11	164f72dfb729ca1e15f99d456b7cf811	f92339e73c7e901c0c852d8e65615cfb588a4ff6	8cfbd38855d2d6033847142fdfa74710b796daf465ab94216fbbbe85971aee29	worker32	Trojan
12	19a5358eff7d8e0bf1c38a8cd4f85a53	baa9f65be5177d1af5c5e8e822d756c799bb03ae	9128e1c56463b3ce7d4578ef14ccdfdba15ccc2d73545cb541ea3e80344b173c	svchost.exe	Trojan/Suspicious
13	a52f26575556d3c4eccd3b51265cb4e6	61fdebb3c9dfa880b54e82579256acfcd4d6d406	97a2ab7a94148d605f3c0a1146a70ba5c436a438b23298a1f02f71866f420c43	CryptoLocker	Trojan
14	ba53d8910ec3e46864c3c86ebd628796	d1c2dfedc602f5d5f2036b0ba5541cac8f8b4b95	a84171501074bac584348f2942964c8550374c39247ec6af0f4a69756ea9fc7a	CryptoLocker	Trojan
15	cf3282d6ad1dce954e472722979f3bde	a2a9501fe1c525702ec428b8c4aa35be954424b6	b686c88bce6629088ce1044b30ad1d5b978fd754601b8b463bc1f611b01d05d7	CryptoLocker	Trojan
16	2e2e4988a49f8b22d5909cf1964851cb	cd3f6121705a3df9156d823b7da34c4745588ac5	b8dedd74f8f474c97d53d313eb5a61d09fc020e91aa09c36711bac5cc123b6d7	README-NOW.txt	Trojan-Ransom.LockerGoga
17	2e2e4988a49f8b22d5909cf1964851cb	cd3f6121705a3df9156d823b7da34c4745588ac5	b8dedd74f8f474c97d53d313eb5a61d09fc020e91aa09c36711bac5cc123b6d7	README-NOW.txt	Trojan-Ransom.LockerGoga
18	52340664fe59e030790c48b66924b5bd	73171ffa6dfee5f9264e3d20a1b6926ec1b60897	bdf36127817413f625d2625d3133760af724d6ad2410bea7297ddc116abc268f	worker32	Trojan
19	4da135516f3da1c6ca04d17f83b99e65	127b2c4403995d35622487bd250d673d74b613b9	bef41d3c76aa98e774ca0185eb5d37da7bf128e3d855ebc699fed90f3988c7d3	svch0st.4553.7z	Trojan
20	a1d732aa27e1ca2ae45a189451419ed5	50f5a5ec13d21d4df119140547d63bc40f93b079	c3d334cb7f6007c9ebee1a68c4f3f72eac9b3c102461d39f2a0a4b32a053843a	–	Trojan
21	174e3d9c7b0380dd7576187c715c4681	31fbfe814628db3b459ddc87bf5ed538700db17a	c7a69dcfb6a3fe433a52a71d85a7e90df25b1db1bc843a541eb08ea2fd1052a4	CryptoLocker	Trojan
22	e11502659f6b5c5bd9f78f534bc38fea	b5fd5c913de8cbb8565d3c7c67c0fbaa4090122b	c97d9bbc80b573bdeeda3812f4d00e5183493dd0d5805e2508728f65977dda15	tgytutrc	Trojan
23	52d43618b1d9f660d446163c050eccfb	6ee0e829659d4746bdfba803ecabbe75707e9b88	ec52b27743056ef6182bc58d639f477f9aab645722f8707300231fd13a4aa51f	tgytutrc7290.zip	Trojan
24	16bcc3b7f32c41e7c7222bf37fe39fe6	a25bc5442c86bdeb0dec6583f0e80e241745fb73	eda26a1cd80aac1c42cdbba9af813d9c4bc81f6052080bc33435d1e076e75aa0	yxugwjud	Trojan
25	e8c7c902bcb2191630e10a80ddf9d5de	e00ec019409a078e9819e09d0f3915cb41fc131f	f3c58f6de17d2ef3e894c09bc68c0afcce23254916c182e44056db3cad710192	worker32	Trojan

Emails

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