Analysis
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max time kernel
147s -
max time network
159s -
platform
windows7_x64 -
resource
win7v200430 -
submitted
19-07-2020 17:21
Static task
static1
Behavioral task
behavioral1
Sample
chthonic_2.23.14.2.vir.exe
Resource
win7v200430
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
chthonic_2.23.14.2.vir.exe
Resource
win10v200430
windows10_x64
0 signatures
0 seconds
General
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Target
chthonic_2.23.14.2.vir.exe
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Size
200KB
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MD5
43307a5a45b5a74e9270b5b3d4c67137
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SHA1
2fb58a0dc16c9bdc697bf1078f63c657e600faf2
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SHA256
3b1309d5b6b22786209cd378d53cccc323b33ae5e75dac3e07e53b32c46e67d3
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SHA512
1b41a796be7c237c49400db8abadd86e0fc56bfb87e8a7966ad43e2b10292aaf69dbcd2ffbb52ebed66ea1464251da05202729e5922dbb4fd69f9a94d7e89694
Score
10/10
Malware Config
Signatures
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Suspicious use of WriteProcessMemory 8 IoCs
Processes:
chthonic_2.23.14.2.vir.exedescription pid process target process PID 732 wrote to memory of 308 732 chthonic_2.23.14.2.vir.exe msiexec.exe PID 732 wrote to memory of 308 732 chthonic_2.23.14.2.vir.exe msiexec.exe PID 732 wrote to memory of 308 732 chthonic_2.23.14.2.vir.exe msiexec.exe PID 732 wrote to memory of 308 732 chthonic_2.23.14.2.vir.exe msiexec.exe PID 732 wrote to memory of 308 732 chthonic_2.23.14.2.vir.exe msiexec.exe PID 732 wrote to memory of 308 732 chthonic_2.23.14.2.vir.exe msiexec.exe PID 732 wrote to memory of 308 732 chthonic_2.23.14.2.vir.exe msiexec.exe PID 732 wrote to memory of 308 732 chthonic_2.23.14.2.vir.exe msiexec.exe -
Processes:
msiexec.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" msiexec.exe -
Processes:
msiexec.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0" msiexec.exe Key created \REGISTRY\MACHINE\Software\Microsoft\Internet Explorer\PhishingFilter msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0" msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0" msiexec.exe Key created \REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Internet Explorer\PhishingFilter msiexec.exe Set value (int) \REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0" msiexec.exe -
Adds policy Run key to start application 2 TTPs 2 IoCs
Processes:
msiexec.exedescription ioc process Key created \REGISTRY\MACHINE\software\microsoft\windows\currentversion\Policies\Explorer\Run msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\MozillaMaintenanceServicew = "C:\\ProgramData\\Mozilla Maintenance Service\\MozillaMaintenanceServicew.exe" msiexec.exe -
Disables taskbar notifications via registry modification
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System policy modification 1 TTPs 5 IoCs
Processes:
msiexec.exedescription ioc process Key created \REGISTRY\MACHINE\software\microsoft\windows\currentversion\policies\Explorer msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\TaskbarNoNotification = "1" msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCAHealth = "1" msiexec.exe Key created \REGISTRY\MACHINE\software\microsoft\windows\currentversion\policies\system msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" msiexec.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
msiexec.exepid process 308 msiexec.exe 308 msiexec.exe -
Deletes itself 1 IoCs
Processes:
msiexec.exepid process 308 msiexec.exe -
Blacklisted process makes network request 9 IoCs
Processes:
msiexec.exeflow pid process 1 308 msiexec.exe 6 308 msiexec.exe 9 308 msiexec.exe 10 308 msiexec.exe 13 308 msiexec.exe 14 308 msiexec.exe 15 308 msiexec.exe 16 308 msiexec.exe 17 308 msiexec.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\chthonic_2.23.14.2.vir.exe"C:\Users\Admin\AppData\Local\Temp\chthonic_2.23.14.2.vir.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\msiexec.exemsiexec.exe2⤵
- Checks whether UAC is enabled
- Modifies Internet Explorer settings
- Adds policy Run key to start application
- System policy modification
- Suspicious behavior: EnumeratesProcesses
- Deletes itself
- Blacklisted process makes network request
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/308-0-0x0000000000000000-mapping.dmp