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Analysis
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max time kernel
91s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
28/10/2022, 18:05
Static task
static1
Behavioral task
behavioral1
Sample
6c87e8812e2d26901b465f411f2f4218521cec6a675d91ea42b5a8e1500c4edd.dll
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
6c87e8812e2d26901b465f411f2f4218521cec6a675d91ea42b5a8e1500c4edd.dll
Resource
win10v2004-20220901-en
General
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Target
6c87e8812e2d26901b465f411f2f4218521cec6a675d91ea42b5a8e1500c4edd.dll
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Size
236KB
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MD5
0c1ba824814c0245cec96cf70a1cb722
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SHA1
ff9fb3392df2987ecd4697229d8bcbf0faf18eb2
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SHA256
6c87e8812e2d26901b465f411f2f4218521cec6a675d91ea42b5a8e1500c4edd
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SHA512
533c2e49a7b03ec2ebda02c20edf693577e45517866d3d3298e94c13a45597a6a010e0e0fb10687d5a5a3c13417d6e8b340fe5516dac8892242c02815257c479
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SSDEEP
1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMh:Go256vS0RJAL+lHPKi40+66iwkD0q
Malware Config
Signatures
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Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\xwq = "{daabe20f-5223-a778-6334-52236a87f91b}" rundll32.exe -
Loads dropped DLL 1 IoCs
pid Process 4196 rundll32.exe -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\srl.dll rundll32.exe File created C:\Windows\SysWOW64\kjd.dll rundll32.exe File opened for modification C:\Windows\SysWOW64\kjd.dll rundll32.exe File created C:\Windows\SysWOW64\srl.dll rundll32.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{daabe20f-5223-a778-6334-52236a87f91b} rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{daabe20f-5223-a778-6334-52236a87f91b}\ rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{daabe20f-5223-a778-6334-52236a87f91b}\InprocServer32 rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{daabe20f-5223-a778-6334-52236a87f91b}\InprocServer32\ = "C:\\Windows\\SysWow64\\srl.dll" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{daabe20f-5223-a778-6334-52236a87f91b}\InprocServer32\ThreadingModel = "Apartment" rundll32.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4196 rundll32.exe 4196 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4196 rundll32.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4196 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4956 wrote to memory of 4196 4956 rundll32.exe 83 PID 4956 wrote to memory of 4196 4956 rundll32.exe 83 PID 4956 wrote to memory of 4196 4956 rundll32.exe 83
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\6c87e8812e2d26901b465f411f2f4218521cec6a675d91ea42b5a8e1500c4edd.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4956 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\6c87e8812e2d26901b465f411f2f4218521cec6a675d91ea42b5a8e1500c4edd.dll,#12⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4196
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
478KB
MD5e99416267b61f52fa5ab994019efd359
SHA186d31eae707db7fe51d2556394fcf0e8e9f6b0fd
SHA256768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774
SHA5120a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae