Analysis
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max time kernel
129s -
max time network
145s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
03-08-2024 14:03
Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240708-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
f6b32504c6e17ce7b4110d0fabeca301
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SHA1
4824b66bb1c6eec5507fb6953a09d43d16c86471
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SHA256
f774a57c36378499db334d0b68aa53fc0f79fa10ae651f79a0ef2f73fd6d88d7
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SHA512
fbb83968342ae645c5934c494c2c48b8e7bd8f22d923c0344909a26204e6b1f002977dcb84dd91de10da731dad026e009e961a8f144765e34904195ec0817c7e
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SSDEEP
49152:KvbI22SsaNYfdPBldt698dBcjHGrRJ6rbR3LoGdRTHHB72eh2NT:Kvk22SsaNYfdPBldt6+dBcjHGrRJ69
Malware Config
Extracted
quasar
1.4.1
Office04
82.49.9.51:4782
49e7b5a4-6fe4-4855-b68c-1fba7121a568
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encryption_key
BF58CF0517AF2BD741F30FED0728FEC9DA104D6D
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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 payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/2368-1-0x0000000000800000-0x0000000000B24000-memory.dmp family_quasar -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of AdjustPrivilegeToken 10 IoCs
Processes:
Client-built.exeAUDIODG.EXEClient-built.exeClient-built.exeClient-built.exeClient-built.exeClient-built.exedescription pid process Token: SeDebugPrivilege 2368 Client-built.exe Token: 33 2720 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 2720 AUDIODG.EXE Token: 33 2720 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 2720 AUDIODG.EXE Token: SeDebugPrivilege 816 Client-built.exe Token: SeDebugPrivilege 2416 Client-built.exe Token: SeDebugPrivilege 480 Client-built.exe Token: SeDebugPrivilege 2240 Client-built.exe Token: SeDebugPrivilege 2392 Client-built.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
Client-built.exepid process 2368 Client-built.exe -
Suspicious use of SendNotifyMessage 1 IoCs
Processes:
Client-built.exepid process 2368 Client-built.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2368
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"1⤵PID:2912
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x4f81⤵
- Suspicious use of AdjustPrivilegeToken
PID:2720
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C:\Users\Admin\AppData\Local\Temp\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:816
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C:\Users\Admin\AppData\Local\Temp\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2416
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C:\Users\Admin\AppData\Local\Temp\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:480
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C:\Users\Admin\AppData\Local\Temp\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2240
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C:\Users\Admin\AppData\Local\Temp\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2392