Analysis
- max time kernel
149s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
11/03/2024, 16:29
General
- Target Virtue Public.exe
- Size 3.1MB
- Sample240311-tzkxvsbd72
- SHA256 0c2c8d8906310228819edfb054c37f18148b0f710486e6a641164cbdaca5f476
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
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80.222.152.67:80
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a6ae3668-7a90-4738-8db0-c5d5669c4b34
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encryption_key
FEBD1C7C69CED06E8B8B9F6EDE22C31EBEF8E212
-
install_name
Virtue.exe
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log_directory
Logs
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reconnect_delay
3000
-
startup_key
Update
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Drops file in System32 directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 17 IoCs
- Suspicious use of AdjustPrivilegeToken 7 IoCs
- Suspicious use of FindShellTrayWindow 43 IoCs
- Suspicious use of SendNotifyMessage 43 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\Virtue Public.exe"C:\Users\Admin\AppData\Local\Temp\Virtue Public.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Virtue.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
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C:\Windows\system32\SubDir\Virtue.exe"C:\Windows\system32\SubDir\Virtue.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 "Update" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Virtue.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
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-
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Virtue.exe
memory/1732-0-0x00000000001E0000-0x0000000000504000-memory.dmp
memory/1732-1-0x00007FFD2C0A0000-0x00007FFD2CB61000-memory.dmp
memory/1732-2-0x0000000002590000-0x00000000025A0000-memory.dmp
memory/1732-8-0x00007FFD2C0A0000-0x00007FFD2CB61000-memory.dmp
memory/2620-19-0x0000015D7B2B0000-0x0000015D7B2B1000-memory.dmp
memory/2620-20-0x0000015D7B2B0000-0x0000015D7B2B1000-memory.dmp
memory/2620-21-0x0000015D7B2B0000-0x0000015D7B2B1000-memory.dmp
memory/2620-22-0x0000015D7B2B0000-0x0000015D7B2B1000-memory.dmp
memory/2620-13-0x0000015D7B2B0000-0x0000015D7B2B1000-memory.dmp
memory/2620-14-0x0000015D7B2B0000-0x0000015D7B2B1000-memory.dmp
memory/2620-15-0x0000015D7B2B0000-0x0000015D7B2B1000-memory.dmp
memory/2620-25-0x0000015D7B2B0000-0x0000015D7B2B1000-memory.dmp
memory/2620-24-0x0000015D7B2B0000-0x0000015D7B2B1000-memory.dmp
memory/2620-23-0x0000015D7B2B0000-0x0000015D7B2B1000-memory.dmp
memory/4204-9-0x00007FFD2C0A0000-0x00007FFD2CB61000-memory.dmp
memory/4204-10-0x0000000001180000-0x0000000001190000-memory.dmp
memory/4204-12-0x000000001C380000-0x000000001C432000-memory.dmp
memory/4204-11-0x000000001C270000-0x000000001C2C0000-memory.dmp
memory/4204-26-0x00007FFD2C0A0000-0x00007FFD2CB61000-memory.dmp