General
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Target
WINDOWS SECURITY.EXE.exe
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Size
534KB
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Sample
240613-b89cpszenc
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MD5
9e14775490cee79c73cb45c2f24f7a73
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SHA1
ddd6c7485a5e64a66a0a7598777abdafa7a63950
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SHA256
d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e
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SHA512
1c0aec61a64400bcf18f6f0e5a950c68b7a25492b07290e3793a759f616c1b361ed6472d260d0f379b691567216a1f9e53af53b2dc89711df618a4463c8d0317
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SSDEEP
12288:ijxIhDXIsMzz2ze1gejMd3mD88i2i3PdjfAag06:i9+IsM55O3glgPO
Behavioral task
behavioral1
Sample
WINDOWS SECURITY.EXE.exe
Resource
win7-20240220-en
Malware Config
Extracted
quasar
2.1.0.0
windows security
quasarrat220-24487.portmap.io:24487
VNM_MUTEX_mOPqShedZxvAqgLrWL
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encryption_key
7mvA2TfKjvMIY0zZeMKF
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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
Targets
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Target
WINDOWS SECURITY.EXE.exe
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Size
534KB
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MD5
9e14775490cee79c73cb45c2f24f7a73
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SHA1
ddd6c7485a5e64a66a0a7598777abdafa7a63950
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SHA256
d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e
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SHA512
1c0aec61a64400bcf18f6f0e5a950c68b7a25492b07290e3793a759f616c1b361ed6472d260d0f379b691567216a1f9e53af53b2dc89711df618a4463c8d0317
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SSDEEP
12288:ijxIhDXIsMzz2ze1gejMd3mD88i2i3PdjfAag06:i9+IsM55O3glgPO
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Contains code to disable Windows Defender
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
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Quasar payload
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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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