Rewterz Threat Alert – LokiBot Malware – Active IOCs
November 15, 2022Rewterz Threat Advisory – CVE-2022-3413 – GitLab Enterprise Edition Vulnerability
November 15, 2022Rewterz Threat Alert – LokiBot Malware – Active IOCs
November 15, 2022Rewterz Threat Advisory – CVE-2022-3413 – GitLab Enterprise Edition Vulnerability
November 15, 2022Severity
Medium
Analysis Summary
Guloader is currently being distributed via spam email campaigns with archived attachments that contain malware. The majority of malware downloaded by GuLoader is commodity malware, with AgentTesla, FormBook, and NanoCore being the most predominant. This downloader typically stores its encrypted payloads on Google Drive. It has also downloaded its payloads from Microsoft OneDrive and also from compromised or attacker-controlled websites. By utilizing legitimate file-sharing websites, GuLoader can evade network-based detection, as these services are not generally filtered or inspected in corporate environments. Usually, the downloaded payloads are encrypted with a hard-coded XOR key embedded in the malware, making it difficult for file-sharing service providers to identify the payload as malicious. This time, the GuLoader Shellcode injector is being distributed via a file named “EXTERNAL RFPPAN India Epoxy/PU 2021”. The scope of this campaign so far seems to be global. GuLoader malware spawns AgentTesla In its latest campaign. AgentTesla is renowned for stealing data from a variety of target workstations’ apps, including browsers, FTP clients, and file downloaders.
Impact
- Malware Installation
- Detection Evasion
- Information Theft
Indicators of Compromise
MD5
- 153aa8c8ef28764f83f372751659a3fd
- b39d09542c4f03e9b36676d2a36a08e8
- 4cda8a2424046bb6ac2644f5024f5209
SHA-256
- c11191b02345fa5b5fcb46d9e71a7521c1d67184a050fe6fd507e42ef4c7130a
- 293e46a6a6b995b7a2528d658b56cb957a4a77e011909261bfa6cc5838723b71
- 67849b898262ffc65b940ddb46ffc0b7b6c1b02e6b9390abd9b29ec5f208e8dc
SHA-1
- b49e5e7318c762ff5fceed4a3f66b7c4fdc25577
- 09da20def7b26159f6c8fc517d4e73c33361e477
- 559d679e4a1a8ec4eb8768ebc5b1bb87175b525d
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment.