Analysis
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max time kernel
93s -
max time network
109s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
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submitted
07/10/2024, 04:52
General
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Target
Client-built.exe
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Size
348KB
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MD5
fa9b24d2daf3f8cf5e8fb84a4b0cd197
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SHA1
03cfb24c35b7f79fd1ce716dd2402ca56d09a349
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SHA256
f429a38b014770d38d3c95aca9e5169c6d2aee6731ae6dacf2b8d2911bdb0827
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SHA512
987beefe76c56a58ff279ca08b5f702cdf5bfed3d64c47ef8c041b4a10f5dd9b475f1cbc856b3a0ae55c310bde67b672a70a11d5b961608910d7b22d2d5bc5b6
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SSDEEP
6144:gN6bPXhLApfp04t/+qckvubgvbIRw/9fVng:0mhApTt/+ctvbiw/9flg
Malware Config
Extracted
quasar
1.3.0.0
new
caidume1368.ddns.net:8848
QSR_MUTEX_7rJKh7823LOXhq62Ll
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encryption_key
XOrsMOPj48itZ7EYR3g9
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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
System
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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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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of WriteProcessMemory 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Client-built.exe" /rl HIGHEST /f2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4KB
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Filesize
376KB
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Filesize
5.6MB
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Filesize
584KB
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Filesize
7.7MB
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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
4KB
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Filesize
7.7MB