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Date (GMT) |
Titre |
Description |
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Stories |
Notes |
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2017-05-12 17:24:40 |
WannaCry / Wana Decryptor / WanaCrypt0r Technical Nose Dive (lien direct) |
Today was a big day for the WanaCrypt0r ransomware as it took the world by storm by causing major outbreaks all over the world. While BleepingComputer has covered these outbreaks in-depth, I felt it may be a good idea to take a technical look at the WanaCrypt0r ransomware for those in the IT field who have to support victims. [...] |
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Wannacry
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2017-05-12 17:13:26 |
Massive wave of ransomware ongoing, (Fri, May 12th) (lien direct) |
For a few hours, bad news are spreading quickly about a massive wave of infections by a new ransomware called WannaCry width:600px" />
(Source: MalwareTech)
Big targets have been telecom operators (ex: Telefonica in Spain) and hospitals in UK. Once the malware has infected a computer, it spreads across the network looking for new victims using the SMB protocol.
The ransomware usesthe Microsoft vulnerability MS17-10[1]. (This vulnerability was used by ETERNALBLUE[2])
Here are some IOCs that we already collected:
SHA256:
09a46b3e1be080745a6d8d88d6b5bd351b1c7586ae0dc94d0c238ee36421cafa
24d004a104d4d54034dbcffc2a4b19a11f39008a575aa614ea04703480b1022c
2584e1521065e45ec3c17767c065429038fc6291c091097ea8b22c8a502c41dd
2ca2d550e603d74dedda03156023135b38da3630cb014e3d00b1263358c5f00d
4a468603fdcb7a2eb5770705898cf9ef37aade532a7964642ecd705a74794b79
SHA1:
45356a9dd616ed7161a3b9192e2f318d0ab5ad10
51e4307093f8ca8854359c0ac882ddca427a813c
MD5:
509c41ec97bb81b0567b059aa2f50fe8
7bf2b57f2a205768755c07f238fb32cc
7f7ccaa16fb15eb1c7399d422f8363e8
File extension: .wncry
Ransomware notification: padding:5px 10px">
alert tcp $HOME_NET 445 - any any (msg:ET EXPLOIT Possible ETERNALBLUE MS17-010 Echo Response content:|00 00 00 31 ff|SMB|2b 00 00 00 00 98 07 c0| content:|4a 6c 4a 6d 49 68 43 6c 42 73 72 00|)
Until now, the best protection is of course to patch your systems as soon as possible and keep your users aware of the new ransomware campaign to preven them to open suspicious emails/files.
[1]https://technet.microsoft.com/en-us/library/security/ms17-010.aspx
[2]https://isc.sans.edu/forums/diary/ETERNALBLUE+Windows+SMBv1+Exploit+Patched/22304/
We will update this diary with more information if available.
Xavier Mertens (@xme)
ISC Handler - Freelance Security Consultant
PGP Key
(c) SANS Internet Storm Center. https://isc.sans.edu Creative Commons Attribution-Noncommercial 3.0 United States License. |
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Wannacry
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2017-05-12 15:30:00 |
\'WannaCry\' Rapidly Moving Ransomware Attack Spreads to 74 Countries (lien direct) |
A wave of ransomware infections took down a wide swath of UK hospitals and is rapidly moving across the globe. |
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Wannacry
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