Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
04/02/2024, 19:19
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
8ff1e2214f8d63c8e672b3741545613b.dll
Resource
win7-20231215-en
3 signatures
150 seconds
General
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Target
8ff1e2214f8d63c8e672b3741545613b.dll
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Size
563KB
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MD5
8ff1e2214f8d63c8e672b3741545613b
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SHA1
cd3b7512ed4a7892acf137858311eb276300d9c8
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SHA256
d0e18a3407daca6bd69d9657b59855a8423ac7f2a019cdbd8f4018de2aa12230
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SHA512
315e11adabd97e830a9c2db41b77e152dc16aabe9a6de24f972b08d4d4032c40fb4e368e3da8880e09257a7339030acff766008cc080231de9b72dfc71c5e71b
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SSDEEP
12288:Y0Et9YDc/Tk4Po4wSSqodPF9C2vTgYkcx5tkpv42q:gtWDcw4o4Ts/9Ckk4tkd42
Malware Config
Signatures
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Installs/modifies Browser Helper Object 2 TTPs 1 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{CC01FC6C-EB6C-EC8D-1179-CD96C94E21A2} regsvr32.exe -
Modifies registry class 11 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\8ff1e2214f8d63c8e672b3741545613b.sh\ = "sh" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\8ff1e2214f8d63c8e672b3741545613b.sh\Clsid regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\8ff1e2214f8d63c8e672b3741545613b.sh\Clsid\ = "{CC01FC6C-EB6C-EC8D-1179-CD96C94E21A2}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-EB6C-EC8D-1179-CD96C94E21A2}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-EB6C-EC8D-1179-CD96C94E21A2} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-EB6C-EC8D-1179-CD96C94E21A2}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-EB6C-EC8D-1179-CD96C94E21A2}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8ff1e2214f8d63c8e672b3741545613b.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-EB6C-EC8D-1179-CD96C94E21A2}\ProgID\ = "8ff1e2214f8d63c8e672b3741545613b.sh" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-EB6C-EC8D-1179-CD96C94E21A2}\ = "sh" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-EB6C-EC8D-1179-CD96C94E21A2}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\8ff1e2214f8d63c8e672b3741545613b.sh regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2996 wrote to memory of 3040 2996 regsvr32.exe 28 PID 2996 wrote to memory of 3040 2996 regsvr32.exe 28 PID 2996 wrote to memory of 3040 2996 regsvr32.exe 28 PID 2996 wrote to memory of 3040 2996 regsvr32.exe 28 PID 2996 wrote to memory of 3040 2996 regsvr32.exe 28 PID 2996 wrote to memory of 3040 2996 regsvr32.exe 28 PID 2996 wrote to memory of 3040 2996 regsvr32.exe 28
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\8ff1e2214f8d63c8e672b3741545613b.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2996 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\8ff1e2214f8d63c8e672b3741545613b.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:3040
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