Analysis
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max time kernel
142s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
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submitted
05-10-2023 17:31
General
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Target
8bbf013e1a095f5841b572e0aadc6c3929533b2332620fa470fe5e744b828b91exe_JC.exe
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Size
348KB
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MD5
19ec1b3fe77ac2bb9b4019ecf20cfc5b
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SHA1
cc3c5fdc6a454955d1c5158a42d668abf616e748
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SHA256
8bbf013e1a095f5841b572e0aadc6c3929533b2332620fa470fe5e744b828b91
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SHA512
5e27fa7c9389b897be5554e8d4396e5bc8b604336816fc6d0b8349059d9de6be19bacdc31d2b01786782ca6480343e841d856f2136850ea41cf87fdbde00b664
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SSDEEP
6144:b2NHXf500M7fN3hDQorkb3aUQ0gdsx9+I6WGldC:id50xl3hcymQbsH+pWG3C
Malware Config
Extracted
quasar
1.3.0.0
NEWDNS
usacupid.org:3000
QSR_MUTEX_bLYoix0mh2BfR5APqy
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encryption_key
mkNVRqiQw8yay6GT5859
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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
Quasar Client Startup
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subdirectory
SubDir
Signatures
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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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Looks up external IP address via web service 1 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\8bbf013e1a095f5841b572e0aadc6c3929533b2332620fa470fe5e744b828b91exe_JC.exe"C:\Users\Admin\AppData\Local\Temp\8bbf013e1a095f5841b572e0aadc6c3929533b2332620fa470fe5e744b828b91exe_JC.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe1⤵
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
376KB
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Filesize
7.7MB
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Filesize
5.6MB
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Filesize
584KB
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Filesize
64KB
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Filesize
408KB
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Filesize
72KB
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Filesize
240KB
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Filesize
40KB
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Filesize
7.7MB
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Filesize
64KB
-
Filesize
64KB
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Filesize
64KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB