Analysis
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max time kernel
148s -
max time network
151s -
platform
windows11-21h2_x64 -
resource
win11-20240802-en -
resource tags
arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system -
submitted
02-08-2024 17:06
Behavioral task
behavioral1
Sample
Solara Executor V2/Download (RUN FIRST).exe
Resource
win11-20240802-en
Behavioral task
behavioral2
Sample
Solara Executor V2/Solara Executor.exe
Resource
win11-20240802-en
General
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Target
Solara Executor V2/Download (RUN FIRST).exe
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Size
3.1MB
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MD5
c23404d4606f1e49bfc9efff359ed317
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SHA1
da2904b0f8e16119576e389c0d77c2b4c96baf9e
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SHA256
00345f840ce5cc3045c67e63e93f2fb438963eeb13a8d8587e2b196d4bc79591
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SHA512
30bb2f181342ab8e9c8bd851d554bedb6f87a91021b2a521ed02313ec146083920b33cc3a28135fb4b45f6103dc0c8fb01ba61096ece3ad23e2e5d3cd5720407
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SSDEEP
49152:fvRuf2NUaNmwzPWlvdaKM7ZxTw1KYw1Jr9oGd09THHB72eh2NT:fvsf2NUaNmwzPWlvdaB7ZxTw1KYm
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.68.119:4782
realwz-34142.portmap.host:34142
6eb5c908-87fa-4e33-a3b3-a6eaa2455bad
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encryption_key
458FF650B9D9D277FD5A8DC74175331B7B2FC1B9
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install_name
Downloader.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
SolaraExecutor
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subdirectory
SubDir
Signatures
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Quasar payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/3080-1-0x00000000007D0000-0x0000000000AF4000-memory.dmp family_quasar C:\Users\Admin\AppData\Roaming\SubDir\Downloader.exe family_quasar -
Executes dropped EXE 1 IoCs
Processes:
Downloader.exepid process 1304 Downloader.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 4884 schtasks.exe 1340 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Download (RUN FIRST).exeDownloader.exedescription pid process Token: SeDebugPrivilege 3080 Download (RUN FIRST).exe Token: SeDebugPrivilege 1304 Downloader.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Downloader.exepid process 1304 Downloader.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
Download (RUN FIRST).exeDownloader.exedescription pid process target process PID 3080 wrote to memory of 4884 3080 Download (RUN FIRST).exe schtasks.exe PID 3080 wrote to memory of 4884 3080 Download (RUN FIRST).exe schtasks.exe PID 3080 wrote to memory of 1304 3080 Download (RUN FIRST).exe Downloader.exe PID 3080 wrote to memory of 1304 3080 Download (RUN FIRST).exe Downloader.exe PID 1304 wrote to memory of 1340 1304 Downloader.exe schtasks.exe PID 1304 wrote to memory of 1340 1304 Downloader.exe schtasks.exe -
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
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C:\Users\Admin\AppData\Local\Temp\Solara Executor V2\Download (RUN FIRST).exe"C:\Users\Admin\AppData\Local\Temp\Solara Executor V2\Download (RUN FIRST).exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3080 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "SolaraExecutor" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Downloader.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:4884 -
C:\Users\Admin\AppData\Roaming\SubDir\Downloader.exe"C:\Users\Admin\AppData\Roaming\SubDir\Downloader.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1304 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "SolaraExecutor" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Downloader.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:1340
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:2948
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.1MB
MD5c23404d4606f1e49bfc9efff359ed317
SHA1da2904b0f8e16119576e389c0d77c2b4c96baf9e
SHA25600345f840ce5cc3045c67e63e93f2fb438963eeb13a8d8587e2b196d4bc79591
SHA51230bb2f181342ab8e9c8bd851d554bedb6f87a91021b2a521ed02313ec146083920b33cc3a28135fb4b45f6103dc0c8fb01ba61096ece3ad23e2e5d3cd5720407