Analysis
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max time kernel
148s -
max time network
130s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
01-02-2024 12:25
Static task
static1
Behavioral task
behavioral1
Sample
Client.exe
Resource
win7-20231215-en
General
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Target
Client.exe
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Size
1.2MB
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MD5
e0578185ba00836f1971e48cf4da4580
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SHA1
42a4e35d4aab1d8cca6459a808573927cb4e18c7
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SHA256
6e7f1b5bd5b7696ef942013c9d8151420dd29849514be091b43b1fcb9a193d73
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SHA512
399ed216148ec9ec1c7aef1af0298abd3ffbeba73105ea398dc294370d25c57909e59563083a79a511732c0b8381ad19c551c0f3c1eb9b104b5c3e229c9c6775
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SSDEEP
24576:WBY9DN/ISlbnyr+rCy/++9vFgWZiA+8qIElcP25WwjorMjTXqxjfxl:WgDfmrEdS1iEmrGgd
Malware Config
Extracted
quasar
1.3.0.0
nulled
147.50.240.233:8008
QSR_MUTEX_vjlanSKDAVykDAvDJ6
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encryption_key
d4qN0cIZpTNNR0XsDxxy
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install_name
thick.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
updates
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subdirectory
SubDir
Signatures
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Quasar payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/2144-1-0x0000000000380000-0x0000000000744000-memory.dmp family_quasar behavioral1/memory/2144-2-0x0000000000380000-0x0000000000744000-memory.dmp family_quasar -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 2 ip-api.com -
Suspicious use of NtSetInformationThreadHideFromDebugger 16 IoCs
Processes:
Client.exepid process 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe 2144 Client.exe -
Creates scheduled task(s) 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
Processes:
Client.exedescription pid process Token: SeDebugPrivilege 2144 Client.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Client.exepid process 2144 Client.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
Client.exedescription pid process target process PID 2144 wrote to memory of 2732 2144 Client.exe schtasks.exe PID 2144 wrote to memory of 2732 2144 Client.exe schtasks.exe PID 2144 wrote to memory of 2732 2144 Client.exe schtasks.exe PID 2144 wrote to memory of 2732 2144 Client.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Client.exe"C:\Users\Admin\AppData\Local\Temp\Client.exe"1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "updates" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Client.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/2144-0-0x0000000000380000-0x0000000000744000-memory.dmpFilesize
3.8MB
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memory/2144-1-0x0000000000380000-0x0000000000744000-memory.dmpFilesize
3.8MB
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memory/2144-2-0x0000000000380000-0x0000000000744000-memory.dmpFilesize
3.8MB
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memory/2144-3-0x00000000748F0000-0x0000000074FDE000-memory.dmpFilesize
6.9MB
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memory/2144-4-0x0000000003140000-0x0000000003180000-memory.dmpFilesize
256KB
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memory/2144-6-0x0000000000380000-0x0000000000744000-memory.dmpFilesize
3.8MB
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memory/2144-8-0x00000000748F0000-0x0000000074FDE000-memory.dmpFilesize
6.9MB
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memory/2144-9-0x0000000003140000-0x0000000003180000-memory.dmpFilesize
256KB