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Analysis
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max time kernel
150s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
04/02/2024, 03:33
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
8e1c2fa9fd10e419ef1120745e948560.dll
Resource
win7-20231215-en
windows7-x64
5 signatures
150 seconds
Behavioral task
behavioral2
Sample
8e1c2fa9fd10e419ef1120745e948560.dll
Resource
win10v2004-20231215-en
windows10-2004-x64
2 signatures
150 seconds
General
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Target
8e1c2fa9fd10e419ef1120745e948560.dll
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Size
25KB
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MD5
8e1c2fa9fd10e419ef1120745e948560
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SHA1
c3953162711779f20d13ce7dc3610f656e5eb3d3
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SHA256
98c0d913bef9590b932a6ba41851fce772ee0fe96b7e9f77893828562699f780
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SHA512
ed79f29c1e8e3e982ff9ef4fd057c3bbf23ef2900c55e397970ddbed28d29a7233a161a121a3e8b63a1dfba21de2a5ff32fcf52f44be2e8891ae3c23411c861f
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SSDEEP
768:7laZpXlXBN1Fq9kFBrrT40yDgaLfxmyIs9d4q1yDJRn:7laHxK9uPyIs9d48
Score
7/10
Malware Config
Signatures
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Loads dropped DLL 1 IoCs
pid Process 760 rundll32.exe -
Modifies WinLogon 2 TTPs 12 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\__c0095F4F rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify rundll32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\__c0095F4F\Impersonate = "0" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\__c0095F4F rundll32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\__c0095F4F\Asynchronous = "1" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\__c0095F4F\DllName = "C:\\Windows\\system32\\__c0095F4F.dat" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\__c0095F4F\Logon = "B" rundll32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\__c0095F4F\Asynchronous = "1" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\__c0095F4F\DllName = "C:\\Windows\\system32\\__c0095F4F.dat" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\__c0095F4F\Startup = "B" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\__c0095F4F\Logon = "B" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\__c0095F4F\Startup = "B" rundll32.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\__c0095F4F.dat rundll32.exe File opened for modification C:\Windows\SysWOW64\__c0095F4F.dat rundll32.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2056 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe 760 rundll32.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 1700 wrote to memory of 2056 1700 rundll32.exe 28 PID 1700 wrote to memory of 2056 1700 rundll32.exe 28 PID 1700 wrote to memory of 2056 1700 rundll32.exe 28 PID 1700 wrote to memory of 2056 1700 rundll32.exe 28 PID 1700 wrote to memory of 2056 1700 rundll32.exe 28 PID 1700 wrote to memory of 2056 1700 rundll32.exe 28 PID 1700 wrote to memory of 2056 1700 rundll32.exe 28 PID 2056 wrote to memory of 760 2056 rundll32.exe 29 PID 2056 wrote to memory of 760 2056 rundll32.exe 29 PID 2056 wrote to memory of 760 2056 rundll32.exe 29 PID 2056 wrote to memory of 760 2056 rundll32.exe 29 PID 2056 wrote to memory of 760 2056 rundll32.exe 29 PID 2056 wrote to memory of 760 2056 rundll32.exe 29 PID 2056 wrote to memory of 760 2056 rundll32.exe 29
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\8e1c2fa9fd10e419ef1120745e948560.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1700 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\8e1c2fa9fd10e419ef1120745e948560.dll,#12⤵
- Modifies WinLogon
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2056 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe "C:\Windows\system32\__c0095F4F.dat",B3⤵
- Loads dropped DLL
- Modifies WinLogon
- Suspicious behavior: EnumeratesProcesses
PID:760
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
25KB
MD58e1c2fa9fd10e419ef1120745e948560
SHA1c3953162711779f20d13ce7dc3610f656e5eb3d3
SHA25698c0d913bef9590b932a6ba41851fce772ee0fe96b7e9f77893828562699f780
SHA512ed79f29c1e8e3e982ff9ef4fd057c3bbf23ef2900c55e397970ddbed28d29a7233a161a121a3e8b63a1dfba21de2a5ff32fcf52f44be2e8891ae3c23411c861f