Analysis
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max time kernel
144s -
max time network
98s -
platform
windows7_x64 -
resource
win7 -
submitted
19-07-2020 19:31
Static task
static1
Behavioral task
behavioral1
Sample
chthonic_2.23.11.8.vir.exe
Resource
win7
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
chthonic_2.23.11.8.vir.exe
Resource
win10v200430
windows10_x64
0 signatures
0 seconds
General
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Target
chthonic_2.23.11.8.vir.exe
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Size
231KB
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MD5
ab0f0fb4f81d585827af387d0c20c1aa
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SHA1
e4cccf1bcec09d0c5a4a3adaf59450fe993caafe
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SHA256
0e1443f15337cc62668623e64be7f56ca7afc02902474e6f9de007c40b99daf0
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SHA512
bd94d988643dca7bd867fecd98bc82b6ba12c86d26b198317dc390e808deefc9517f5c40ff6c101cb7de10b2aa7dfa8f13ce5c467a2b728849dc4ed8e3e752a3
Score
10/10
Malware Config
Signatures
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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\cMicrosoftAnalysisServices = "C:\\ProgramData\\Microsoft Analysis Services\\cMicrosoftAnalysisServices.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 -
System policy modification 1 TTPs 5 IoCs
Processes:
msiexec.exedescription ioc process 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 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 -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
chthonic_2.23.11.8.vir.exedescription pid process target process PID 824 wrote to memory of 1260 824 chthonic_2.23.11.8.vir.exe msiexec.exe PID 824 wrote to memory of 1260 824 chthonic_2.23.11.8.vir.exe msiexec.exe PID 824 wrote to memory of 1260 824 chthonic_2.23.11.8.vir.exe msiexec.exe PID 824 wrote to memory of 1260 824 chthonic_2.23.11.8.vir.exe msiexec.exe PID 824 wrote to memory of 1260 824 chthonic_2.23.11.8.vir.exe msiexec.exe PID 824 wrote to memory of 1260 824 chthonic_2.23.11.8.vir.exe msiexec.exe PID 824 wrote to memory of 1260 824 chthonic_2.23.11.8.vir.exe msiexec.exe PID 824 wrote to memory of 1260 824 chthonic_2.23.11.8.vir.exe msiexec.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
msiexec.exepid process 1260 msiexec.exe 1260 msiexec.exe 1260 msiexec.exe 1260 msiexec.exe 1260 msiexec.exe 1260 msiexec.exe 1260 msiexec.exe 1260 msiexec.exe -
Disables taskbar notifications via registry modification
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Processes:
msiexec.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\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-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Internet Explorer\PhishingFilter msiexec.exe Set value (int) \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0" msiexec.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\chthonic_2.23.11.8.vir.exe"C:\Users\Admin\AppData\Local\Temp\chthonic_2.23.11.8.vir.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\msiexec.exemsiexec.exe2⤵
- Adds policy Run key to start application
- Checks whether UAC is enabled
- System policy modification
- Suspicious behavior: EnumeratesProcesses
- Modifies Internet Explorer settings
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1260-0-0x0000000000000000-mapping.dmp