Analysis
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max time kernel
95s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
03-12-2024 13:23
General
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Target
RFQ9-XTC-204-60THD.xlsx.exe
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Size
143KB
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MD5
c9951fb84a416c1f329b39b2da482348
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SHA1
e250949b96260df94f7c4cce9ef009069690ffe6
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SHA256
de6b367a4b3a81fea07cdaa9406b9b70a994581cfae539f5da441268e4be4188
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SHA512
1e450fc3fff15facd76ce9ac643e2e0ef2ffad6e18ba54dd70f93968fc984d14f81f8429409ddf25320a2d80df6e240367b2dd49e4793acad2460c158e62c556
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SSDEEP
3072:IODxM5DNveAHHY+axlCTo0JLsLbJo9LdtxAuAqdES0m5kJ8QvT5+hM94K2icI7y:IO9M5DNveAHHY+clCU0JLsLb+9LdtxAN
Malware Config
Extracted
quasar
1.4.1
chi
ert43w221.ydns.eu:6298
a9116a3c-c75d-46ba-83b2-70c9a140159e
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encryption_key
799E5C34BA6EC18D72E269D0C5CF1A5AC1AD9277
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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
svchost
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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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Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
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Drops startup file 1 IoCs
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Suspicious use of SetThreadContext 1 IoCs
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System Location Discovery: System Language Discovery 1 TTPs 3 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 behavior: EnumeratesProcesses 1 IoCs
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Suspicious use of AdjustPrivilegeToken 3 IoCs
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Suspicious use of WriteProcessMemory 11 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
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C:\Users\Admin\AppData\Local\Temp\RFQ9-XTC-204-60THD.xlsx.exe"C:\Users\Admin\AppData\Local\Temp\RFQ9-XTC-204-60THD.xlsx.exe"2⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"2⤵
- 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 "svchost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- 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
168KB
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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
40KB
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Filesize
2.1MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
7.7MB
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Filesize
304KB
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Filesize
1.5MB
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Filesize
4KB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
336KB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
3.1MB
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Filesize
7.7MB
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Filesize
6.1MB
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Filesize
320KB
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Filesize
712KB
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Filesize
72KB
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Filesize
240KB
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Filesize
408KB
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Filesize
7.7MB
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Filesize
7.7MB