General
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Target
https://github.com/enginestein/Virus-Collection
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Sample
250131-nmqppawngp
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://github.com/enginestein/Virus-Collection
Resource
win10ltsc2021-20250128-en
Malware Config
Extracted
crimsonrat
185.136.161.124
Targets
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Target
https://github.com/enginestein/Virus-Collection
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Chimera
Ransomware which infects local and network files, often distributed via Dropbox links.
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Chimera Ransomware Loader DLL
Drops/unpacks executable file which resembles Chimera's Loader.dll.
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Chimera family
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CrimsonRAT main payload
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Crimsonrat family
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Renames multiple (3280) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Downloads MZ/PE file
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Drops desktop.ini file(s)
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Legitimate hosting services abused for malware hosting/C2
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1