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    March 21, 2023
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    Rewterz Threat Alert – Mirai Botnet aka Katana – Active IOCs
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    March 21, 2023
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    Rewterz Threat Alert – LockBit Ransomware – Active IOCs
    Severity High Analysis Summary LockBit ransomware takes as little as five minutes to deploy the encryption routine on target systems once it lands on the victim […]

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    pdf-file (1)
    Annual Threat Intelligence Report 2022
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  • Why Rewterz?

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    Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.

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Rewterz
Rewterz Threat Advisory – CVE-2019-2725 – WebLogic Server Remote Code Execution Vulnerability
May 2, 2019
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Rewterz Threat Advisory – Sodinokibi ransomware exploits WebLogic Server vulnerability

May 2, 2019

Severity

High

Analysis Summary


A recently disclosed vulnerability in Oracle WebLogic server that we reported earlier today is being actively exploited to install a new variant of ransomware called “Sodinokibi.” This ransomware attempts to encrypt data in a user’s directory and deletes shadow copy backups to make data recovery more difficult.

The vendor has released a patch for this vulnerability. It’s an easily exploitable flaw as anyone with HTTP access to the WebLogic server could carry out an attack. When the ransomware successfully infected a machine, it left the following ransom note, attached as a sample:

image-1556792782.jpg

Indicators of Compromise are given below. The Attacker’s IP address was reported by Cisco’s Talos Blog as follows:

image-1556792816.png

This IP has previously been reported multiple times, as seen on https://www.abuseipdb.com/check/130.61.54.136.

image-1556792935.png

Impact

Files Encryption

Indicators of Compromise

IP(s) / Hostname(s)

130.61.54[.]136

URLs

  • hxxp[:]//188[.]166[.]74[[.]]218/office[.]exe
  • hxxp[:]//188[.]166[.]74[[.]]218/radm[.]exe
  • hxxp[:]//188[.]166[.]74[[.]]218/untitled[.]exe
  • hxxp[:]//45[.]55[.]211[[.]]79/[.]cache/untitled[.]exe
  • decryptor[.]top

Malware Hash (MD5/SHA1/SH256)

  • 0fa207940ea53e2b54a2b769d8ab033a6b2c5e08c78bf4d7dade79849960b54d
  • 34dffdb04ca07b014cdaee857690f86e490050335291ccc84c94994fa91e0160
  • 74bc2f9a81ad2cc609b7730dbabb146506f58244e5e655cbb42044913384a6ac
  • 95ac3903127b74f8e4d73d987f5e3736f5bdd909ba756260e187b6bf53fb1a05
  • fa2bccdb9db2583c2f9ff6a536e824f4311c9a8a9842505a0323f027b8b51451

Affected Vendors

Oracle

Affected Products

Oracle WebLogic Server

Remediation

  • Patch WebLogic as soon as possible against CVE-2019-2725.
  • Block the threat indicators at their respective controls.
  • Restrict the access of the account used to run the WebLogic process.
  • Restrict egress Data Center communications.
  • Control URL access (in this case external access to “/_async/” and “/wls-wsat/“).
  • Configure PowerShell to execute only signed scripts.

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