Analysis
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max time kernel
147s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
12-12-2022 17:20
Static task
static1
Behavioral task
behavioral1
Sample
db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe
Resource
win10v2004-20221111-en
General
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Target
db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe
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Size
87KB
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MD5
ca699117112a173ca7b289f1baf6c3c0
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SHA1
862f227d4fa0b4de892006d7fe19e610e9f1a676
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SHA256
db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6
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SHA512
d9f82f6e18ce2eb624a5ee1e20618318fde7ffdcff834d9c0291f4971bd72ce9b7f5108bf45f11ceed4d1f526bad4842913e833a25e3d99a3235d6f87b4d2620
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SSDEEP
1536:sUZggDGVM9WSZvZHU+uyWrHyHndw/VTtvVCMI4bgAQ9uaJZA2DJpO:sUigDGVMU4vZUZJmHdeVTtI4bgAQ9uaE
Malware Config
Extracted
asyncrat
0.5.7B
DefenderSmartScren
217.64.31.3:8437
DefenderSmartScren
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delay
3
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install
false
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install_file
SecurityHealtheurvice.exe
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install_folder
%AppData%
Signatures
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Async RAT payload 6 IoCs
Processes:
resource yara_rule behavioral1/memory/540-64-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/540-63-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/540-65-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/540-66-0x000000000040D06E-mapping.dmp asyncrat behavioral1/memory/540-68-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/540-70-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
powershell.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\SecurityHealthService = "C:\\Users\\Admin\\AppData\\Roaming\\SecurityHealthService\\SecurityHealthService.exe" powershell.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exedescription pid process target process PID 1204 set thread context of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe -
Creates scheduled task(s) 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
Processes:
powershell.exepid process 1348 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 1348 powershell.exe -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.execmd.exedescription pid process target process PID 1204 wrote to memory of 1348 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe powershell.exe PID 1204 wrote to memory of 1348 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe powershell.exe PID 1204 wrote to memory of 1348 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe powershell.exe PID 1204 wrote to memory of 1348 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe powershell.exe PID 1204 wrote to memory of 300 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe cmd.exe PID 1204 wrote to memory of 300 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe cmd.exe PID 1204 wrote to memory of 300 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe cmd.exe PID 1204 wrote to memory of 300 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe cmd.exe PID 300 wrote to memory of 1504 300 cmd.exe schtasks.exe PID 300 wrote to memory of 1504 300 cmd.exe schtasks.exe PID 300 wrote to memory of 1504 300 cmd.exe schtasks.exe PID 300 wrote to memory of 1504 300 cmd.exe schtasks.exe PID 1204 wrote to memory of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe PID 1204 wrote to memory of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe PID 1204 wrote to memory of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe PID 1204 wrote to memory of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe PID 1204 wrote to memory of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe PID 1204 wrote to memory of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe PID 1204 wrote to memory of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe PID 1204 wrote to memory of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe PID 1204 wrote to memory of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe PID 1204 wrote to memory of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe PID 1204 wrote to memory of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe PID 1204 wrote to memory of 540 1204 db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe"C:\Users\Admin\AppData\Local\Temp\db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Remove -ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'SecurityHealthService';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'SecurityHealthService' -Value '"C:\Users\Admin\AppData\Roaming\SecurityHealthService\SecurityHealthService.exe"' -PropertyType 'String'2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exe"cmd" /C schtasks /create /tn \SecurityHealthService /tr "C:\Users\Admin\AppData\Roaming\SecurityHealthService\SecurityHealthService.exe" /st 00:00 /du 9999:59 /sc once /ri 60 /rl HIGHEST /f2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn \SecurityHealthService /tr "C:\Users\Admin\AppData\Roaming\SecurityHealthService\SecurityHealthService.exe" /st 00:00 /du 9999:59 /sc once /ri 60 /rl HIGHEST /f3⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe#cmd2⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/300-58-0x0000000000000000-mapping.dmp
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memory/540-61-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/540-63-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/540-70-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/540-68-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/540-60-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/540-66-0x000000000040D06E-mapping.dmp
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memory/540-64-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/540-65-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/1204-54-0x00000000008D0000-0x00000000008EC000-memory.dmpFilesize
112KB
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memory/1204-55-0x0000000075C11000-0x0000000075C13000-memory.dmpFilesize
8KB
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memory/1348-56-0x0000000000000000-mapping.dmp
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memory/1348-72-0x0000000070B70000-0x000000007111B000-memory.dmpFilesize
5.7MB
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memory/1348-73-0x0000000070B70000-0x000000007111B000-memory.dmpFilesize
5.7MB
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memory/1504-59-0x0000000000000000-mapping.dmp