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General
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Target
990e4a37aa2c639c582f884fd3430063.exe
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Size
1.4MB
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Sample
230921-g2lkysdh2x
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MD5
990e4a37aa2c639c582f884fd3430063
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SHA1
7b272d8dbead6130f66d6c66b3c9d80d24a4486e
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SHA256
e5aa35d2480e58e2b63e14ef64374728d931423cd3f530cb43a107ca4c2a93aa
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SHA512
5c1a590cdc3e7beecc0d48f74f417ab4c40afdbab90e02240979a0ffcb86e0f284784857c286d291a2334071d58e1c20a19d7c5bf15bdc59e398e26d3c290748
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SSDEEP
24576:U2G/nvxW3Ww0tRp8GiXTBhq7yRDvHcUcjUvy0lr3Tl6icOB/UWoT:UbA30H4zF0UMSAicOB/UWk
Static task
static1
Behavioral task
behavioral1
Sample
990e4a37aa2c639c582f884fd3430063.exe
Resource
win7-20230831-en
Malware Config
Extracted
quasar
1.3.0.0
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94.131.105.161:12344
QSR_MUTEX_UEgITWnMKnRP3EZFzK
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encryption_key
5Q0JQBQQfAUHRJTcAIOF
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install_name
lient.exe
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log_directory
Lugs
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reconnect_delay
3000
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startup_key
itartup
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subdirectory
SubDir
Targets
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Target
990e4a37aa2c639c582f884fd3430063.exe
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Size
1.4MB
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MD5
990e4a37aa2c639c582f884fd3430063
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SHA1
7b272d8dbead6130f66d6c66b3c9d80d24a4486e
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SHA256
e5aa35d2480e58e2b63e14ef64374728d931423cd3f530cb43a107ca4c2a93aa
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SHA512
5c1a590cdc3e7beecc0d48f74f417ab4c40afdbab90e02240979a0ffcb86e0f284784857c286d291a2334071d58e1c20a19d7c5bf15bdc59e398e26d3c290748
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SSDEEP
24576:U2G/nvxW3Ww0tRp8GiXTBhq7yRDvHcUcjUvy0lr3Tl6icOB/UWoT:UbA30H4zF0UMSAicOB/UWk
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Quasar payload
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Modifies Windows Firewall
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ACProtect 1.3x - 1.4x DLL software
Detects file using ACProtect software.
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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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Loads dropped DLL
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Unexpected DNS network traffic destination
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
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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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