Analysis
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max time kernel
146s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
resource tags
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submitted
18-07-2022 11:22
General
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Target
bfaa90c6e3aacd9d9b83a4f8f0f74b0a.exe
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Size
534KB
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MD5
bfaa90c6e3aacd9d9b83a4f8f0f74b0a
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SHA1
85cc249e2cbf60761fb6de586a442bfc81052e36
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SHA256
6d00a6b8d581813e8af3114968274f89978b40d400c8eef2bf7e09192f5ec9e6
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SHA512
29d83e5f0e82f94c75874c382dc0c002ed90627b8441066c2dc2575ec1f6aff3973bc72915b767d5e54688da6043a3bcd294d26445d865462a11ddb88f0912a5
Malware Config
Extracted
quasar
2.1.0.0
Office04
127.0.0.1:4782
VNM_MUTEX_c2q7y2ayYutZ2XaYe7
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encryption_key
NTih4UsOfv91J9azm70k
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Venom Client Startup
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subdirectory
SubDir
Signatures
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Contains code to disable Windows Defender 1 IoCs
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
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Quasar RAT
Quasar is an open source Remote Access Tool.
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Quasar payload 1 IoCs
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VenomRAT
VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.
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suricata: ET MALWARE W32/Quasar 1.3/Venom RAT Connectivity Check 2
suricata: ET MALWARE W32/Quasar 1.3/Venom RAT Connectivity Check 2
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suricata: ET MALWARE W32/Quasar 1.3/Venom RAT Connectivity Check 3
suricata: ET MALWARE W32/Quasar 1.3/Venom RAT Connectivity Check 3
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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\bfaa90c6e3aacd9d9b83a4f8f0f74b0a.exe"C:\Users\Admin\AppData\Local\Temp\bfaa90c6e3aacd9d9b83a4f8f0f74b0a.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
560KB
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Filesize
5.6MB
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Filesize
584KB
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Filesize
408KB
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Filesize
72KB
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Filesize
40KB