Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
20/06/2024, 01:13
General
- Target 164e19d48c8d3ed423d4d4c68dff47899f375b6ef4f2a27005562e16b3a8d33f.exe
- Size 3.1MB
- Sample240620-bllm5azhqa
- SHA256 164e19d48c8d3ed423d4d4c68dff47899f375b6ef4f2a27005562e16b3a8d33f
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
94.228.166.40:4782
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172a89d7-b9b2-4d82-b5ed-6beb5326f544
-
encryption_key
7970C2029EDBB83E6BD65073BE18684AC9FF3F48
-
install_name
KR6nDu9fLhop1bFe.exe
-
log_directory
Logs
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reconnect_delay
3000
-
startup_key
Defender.proces
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\164e19d48c8d3ed423d4d4c68dff47899f375b6ef4f2a27005562e16b3a8d33f.exe"C:\Users\Admin\AppData\Local\Temp\164e19d48c8d3ed423d4d4c68dff47899f375b6ef4f2a27005562e16b3a8d33f.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Defender.proces" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
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C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe"C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Defender.proces" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
KR6nDu9fLhop1bFe.exe
memory/3888-10-0x00007FFBA3160000-0x00007FFBA3C21000-memory.dmp
memory/3888-11-0x00007FFBA3160000-0x00007FFBA3C21000-memory.dmp
memory/3888-12-0x000000001DDD0000-0x000000001DE20000-memory.dmp
memory/3888-13-0x000000001DEE0000-0x000000001DF92000-memory.dmp
memory/3888-14-0x00007FFBA3160000-0x00007FFBA3C21000-memory.dmp
memory/4460-1-0x0000000000090000-0x00000000003B4000-memory.dmp
memory/4460-0-0x00007FFBA3163000-0x00007FFBA3165000-memory.dmp
memory/4460-2-0x00007FFBA3160000-0x00007FFBA3C21000-memory.dmp
memory/4460-9-0x00007FFBA3160000-0x00007FFBA3C21000-memory.dmp