Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
26/05/2024, 03:49
Static task
static1
Behavioral task
behavioral1
Sample
ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f.dll
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f.dll
Resource
win10v2004-20240426-en
General
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Target
ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f.dll
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Size
25KB
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MD5
39924d7821cc67b6f271b4f528ec0081
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SHA1
0a5049b966908f164a7ddbffa55fdadab4541b39
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SHA256
ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f
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SHA512
c87cd842d35db62177d5b7c6612d0ffd3d465ae23c93435d3e09df7babf4a9bb109e6a67602b11ecbc83363f897d3d221f62f78e1ea5b61d77d59c773ede681e
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SSDEEP
384:Y5ot8iGdom6BmSYFznnQQxweIPZUS+2W0ZYuSQQAMyBAUA5wgQFRqwUEfcfe6rom:6risCpYlvVWZ1YuRQQ5xAREUvtf
Malware Config
Signatures
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Loads dropped DLL 3 IoCs
pid Process 1864 rundll32.exe 1864 rundll32.exe 4324 rundll32.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\khfETmmm.dll,#1" rundll32.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\khfETmmm.dll rundll32.exe File opened for modification C:\Windows\SysWOW64\khfETmmm.dll rundll32.exe -
Modifies registry class 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8D742974-DEA8-40F2-9008-9BAA973C958D} rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8D742974-DEA8-40F2-9008-9BAA973C958D}\InprocServer32 rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8D742974-DEA8-40F2-9008-9BAA973C958D}\InprocServer32\ = "C:\\Windows\\SysWow64\\khfETmmm.dll" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8D742974-DEA8-40F2-9008-9BAA973C958D}\InprocServer32\ThreadingModel = "Both" rundll32.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1864 rundll32.exe 1864 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe 4324 rundll32.exe -
Suspicious behavior: RenamesItself 1 IoCs
pid Process 1864 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1864 rundll32.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1864 rundll32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 4472 wrote to memory of 1864 4472 rundll32.exe 83 PID 4472 wrote to memory of 1864 4472 rundll32.exe 83 PID 4472 wrote to memory of 1864 4472 rundll32.exe 83 PID 1864 wrote to memory of 612 1864 rundll32.exe 5 PID 1864 wrote to memory of 4324 1864 rundll32.exe 100 PID 1864 wrote to memory of 4324 1864 rundll32.exe 100 PID 1864 wrote to memory of 4324 1864 rundll32.exe 100
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:612
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4472 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1864 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Windows\system32\khfETmmm.dll,a3⤵
- Loads dropped DLL
- Adds Run key to start application
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:4324
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
25KB
MD539924d7821cc67b6f271b4f528ec0081
SHA10a5049b966908f164a7ddbffa55fdadab4541b39
SHA256ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f
SHA512c87cd842d35db62177d5b7c6612d0ffd3d465ae23c93435d3e09df7babf4a9bb109e6a67602b11ecbc83363f897d3d221f62f78e1ea5b61d77d59c773ede681e