Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20250129-en -
resource tags
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submitted
09-02-2025 23:37
General
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Target
test.exe
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Size
348KB
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MD5
2f671e7ebc050b4f024988ef32316937
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SHA1
73a69d7d9ed1c8a63d626edf59702b470d2d6650
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SHA256
25f2d280e685bf93f437553620a4b4e89d362205af34c22263bcd6bb33386fe3
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SHA512
86f0a286e39040a86504c306f9587e840d8ea74bfaaaee5105f0689434b4e433ab5c30032077a8e3e7eae697a65ebae3a09001434a31f9ac5863c323d2d7d7be
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SSDEEP
3072:hjrN+Jhi1vwWdCqLlpyDcsvPBsPJ+bgCr8a8JLEThlbVBD5JVWt8nwU69r4rUYT1:hHUhIvTCqLyR0LtUbPdv69r4rUYTMm
Malware Config
Extracted
quasar
1.3.0.0
Office04
127.0.0.1:4782
QSR_MUTEX_n0f6at7YDD5llBKKrq
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encryption_key
WTfCCpEEZrrjQU0Hwnaj
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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
csrss.exe
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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 family
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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\test.exe"C:\Users\Admin\AppData\Local\Temp\test.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 "csrss.exe" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\test.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
Loading Replay Monitor...
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
4KB
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Filesize
240KB
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Filesize
7.7MB
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Filesize
40KB