Analysis
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max time kernel
150s -
max time network
138s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
01-01-2025 20:00
Behavioral task
behavioral1
Sample
1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe
Resource
win7-20240903-en
General
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Target
1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe
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Size
3.1MB
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MD5
3c7bf1e80abf4d7d6dc60e207425f519
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SHA1
9c65bc3a1688b64032ba3ef8cb5676cacfa34759
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SHA256
1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b
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SHA512
a6d7e20fa6340e18470442a10a84e79442185c2e26939e6742cb7bc5f08acec27a50172a47b4cf2f8cce816cade61a60f127430cd8f25174bb98885b67f30663
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SSDEEP
49152:CvDI22SsaNYfdPBldt698dBcjHZu/kBxnLoGdhTHHB72eh2NT:Cv822SsaNYfdPBldt6+dBcjHk/g
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.1.176:4782
8ac8cfe4-abbd-4c20-8ef9-30391cf64a5b
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encryption_key
B236022E1D7BEC08D8EF90B6C25D471BFC7F95CB
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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 family
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Quasar payload 3 IoCs
resource yara_rule behavioral1/memory/2196-1-0x00000000000E0000-0x0000000000404000-memory.dmp family_quasar behavioral1/files/0x0008000000018683-6.dat family_quasar behavioral1/memory/2320-9-0x0000000001300000-0x0000000001624000-memory.dmp family_quasar -
Executes dropped EXE 1 IoCs
pid Process 2320 Client.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2196 1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe Token: SeDebugPrivilege 2320 Client.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2320 Client.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2196 wrote to memory of 2320 2196 1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe 30 PID 2196 wrote to memory of 2320 2196 1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe 30 PID 2196 wrote to memory of 2320 2196 1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe"C:\Users\Admin\AppData\Local\Temp\1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2196 -
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2320
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Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
-
Filesize
3.1MB
MD53c7bf1e80abf4d7d6dc60e207425f519
SHA19c65bc3a1688b64032ba3ef8cb5676cacfa34759
SHA2561250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b
SHA512a6d7e20fa6340e18470442a10a84e79442185c2e26939e6742cb7bc5f08acec27a50172a47b4cf2f8cce816cade61a60f127430cd8f25174bb98885b67f30663