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Analysis
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max time kernel
92s -
max time network
139s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
01/12/2022, 21:12
Static task
static1
Behavioral task
behavioral1
Sample
90cd43a683f8568a4c0f0c007634cb7eef3ec7ce9a28506f49d46232d5c0d6e1.dll
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
90cd43a683f8568a4c0f0c007634cb7eef3ec7ce9a28506f49d46232d5c0d6e1.dll
Resource
win10v2004-20220812-en
General
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Target
90cd43a683f8568a4c0f0c007634cb7eef3ec7ce9a28506f49d46232d5c0d6e1.dll
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Size
236KB
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MD5
361ef054147f6f1a507fc2be6e213029
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SHA1
f6b425c500557bfc0af337f61c572c8f2b790682
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SHA256
90cd43a683f8568a4c0f0c007634cb7eef3ec7ce9a28506f49d46232d5c0d6e1
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SHA512
312e7c7b8ff6f0835398c23d141d2c6d100acb9d1cf361e517d2e4aec09ff5f762471d54d6e40f6355b09a726f4287bdc386236d92f78b54624611d4b581bd87
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SSDEEP
3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIM:+Qj9U3jwO3rt5/
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\ppnhfeaaa = "{f359f8ce-7bd1-c026-8ce2-7bd170466fec}" rundll32.exe -
Loads dropped DLL 1 IoCs
pid Process 1856 rundll32.exe -
Drops file in System32 directory 4 IoCs
description ioc Process File created C:\Windows\SysWOW64\kkicazvvv.dll rundll32.exe File opened for modification C:\Windows\SysWOW64\kkicazvvv.dll rundll32.exe File created C:\Windows\SysWOW64\ccausrnnn.dll rundll32.exe File opened for modification C:\Windows\SysWOW64\ccausrnnn.dll rundll32.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f359f8ce-7bd1-c026-8ce2-7bd170466fec} rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f359f8ce-7bd1-c026-8ce2-7bd170466fec}\ rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f359f8ce-7bd1-c026-8ce2-7bd170466fec}\InprocServer32 rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f359f8ce-7bd1-c026-8ce2-7bd170466fec}\InprocServer32\ = "C:\\Windows\\SysWow64\\kkicazvvv.dll" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f359f8ce-7bd1-c026-8ce2-7bd170466fec}\InprocServer32\ThreadingModel = "Apartment" rundll32.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1856 rundll32.exe 1856 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1856 rundll32.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1856 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1436 wrote to memory of 1856 1436 rundll32.exe 80 PID 1436 wrote to memory of 1856 1436 rundll32.exe 80 PID 1436 wrote to memory of 1856 1436 rundll32.exe 80
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\90cd43a683f8568a4c0f0c007634cb7eef3ec7ce9a28506f49d46232d5c0d6e1.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1436 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\90cd43a683f8568a4c0f0c007634cb7eef3ec7ce9a28506f49d46232d5c0d6e1.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:1856
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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