Analysis
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max time kernel
7s -
max time network
10s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
02-06-2024 09:25
Behavioral task
behavioral1
Sample
Solara.exe
Resource
win7-20240221-en
General
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Target
Solara.exe
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Size
3.1MB
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MD5
d80e76b6962401ba306ce0ce9adc43ef
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SHA1
e607bd7cdecf84d80b28e67d2836ea882a4f771f
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SHA256
9ad36e247204c18b819993885ea7a99fa5b142456a41494a9878cf45cfed2dde
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SHA512
85881abbcb6260e9b327b4dcb4db98c24fbc3ca8ea731fb3b1b08c96dabc3745c8fdc778e0dd7f6a8049b24b44c3074b7fd93033dc5f0d7a793755b79ac5f866
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SSDEEP
49152:uvRuf2NUaNmwzPWlvdaKM7ZxTwRJishuOar7ToGdXTHHB72eh2NT:uvsf2NUaNmwzPWlvdaB7ZxTwnruP
Malware Config
Extracted
quasar
1.4.1
Client
Synapsedoggystyle-51191.portmap.host:51191
192.168.68.107:4782
54e60454-c931-4922-b1b7-695913934b39
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encryption_key
33F77912B4CF70A0AD1E582014B5294301E27672
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install_name
AtlasX.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Java Updator
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subdirectory
SubDir
Signatures
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Quasar payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/2320-1-0x00000000008A0000-0x0000000000BC4000-memory.dmp family_quasar C:\Users\Admin\AppData\Roaming\SubDir\AtlasX.exe family_quasar behavioral1/memory/2792-9-0x0000000000010000-0x0000000000334000-memory.dmp family_quasar -
Executes dropped EXE 1 IoCs
Processes:
AtlasX.exepid process 2792 AtlasX.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 2940 schtasks.exe 3020 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Solara.exeAtlasX.exedescription pid process Token: SeDebugPrivilege 2320 Solara.exe Token: SeDebugPrivilege 2792 AtlasX.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
AtlasX.exepid process 2792 AtlasX.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
Solara.exeAtlasX.exedescription pid process target process PID 2320 wrote to memory of 2940 2320 Solara.exe schtasks.exe PID 2320 wrote to memory of 2940 2320 Solara.exe schtasks.exe PID 2320 wrote to memory of 2940 2320 Solara.exe schtasks.exe PID 2320 wrote to memory of 2792 2320 Solara.exe AtlasX.exe PID 2320 wrote to memory of 2792 2320 Solara.exe AtlasX.exe PID 2320 wrote to memory of 2792 2320 Solara.exe AtlasX.exe PID 2792 wrote to memory of 3020 2792 AtlasX.exe schtasks.exe PID 2792 wrote to memory of 3020 2792 AtlasX.exe schtasks.exe PID 2792 wrote to memory of 3020 2792 AtlasX.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.exe"C:\Users\Admin\AppData\Local\Temp\Solara.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exe"schtasks" /create /tn "Java Updator" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\AtlasX.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Roaming\SubDir\AtlasX.exe"C:\Users\Admin\AppData\Roaming\SubDir\AtlasX.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exe"schtasks" /create /tn "Java Updator" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\AtlasX.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\SubDir\AtlasX.exeFilesize
3.1MB
MD5d80e76b6962401ba306ce0ce9adc43ef
SHA1e607bd7cdecf84d80b28e67d2836ea882a4f771f
SHA2569ad36e247204c18b819993885ea7a99fa5b142456a41494a9878cf45cfed2dde
SHA51285881abbcb6260e9b327b4dcb4db98c24fbc3ca8ea731fb3b1b08c96dabc3745c8fdc778e0dd7f6a8049b24b44c3074b7fd93033dc5f0d7a793755b79ac5f866
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memory/2320-0-0x000007FEF5223000-0x000007FEF5224000-memory.dmpFilesize
4KB
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memory/2320-1-0x00000000008A0000-0x0000000000BC4000-memory.dmpFilesize
3.1MB
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memory/2320-2-0x000007FEF5220000-0x000007FEF5C0C000-memory.dmpFilesize
9.9MB
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memory/2320-10-0x000007FEF5220000-0x000007FEF5C0C000-memory.dmpFilesize
9.9MB
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memory/2792-8-0x000007FEF5220000-0x000007FEF5C0C000-memory.dmpFilesize
9.9MB
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memory/2792-9-0x0000000000010000-0x0000000000334000-memory.dmpFilesize
3.1MB
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memory/2792-11-0x000007FEF5220000-0x000007FEF5C0C000-memory.dmpFilesize
9.9MB