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Analysis
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max time kernel
246s -
max time network
334s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
01/12/2022, 10:17
Behavioral task
behavioral1
Sample
99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe
Resource
win10v2004-20220812-en
General
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Target
99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe
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Size
283KB
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MD5
53dc0ea8e7900547142e4e6d1b7f8bae
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SHA1
0398ed2e4dab903afe34e5c01fd7b59152973898
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SHA256
99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b
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SHA512
4fdefd45423a71025aae92340e0a38fe666425e30dc032823e731d82269a9659bc5601ced13114b809a496785b77385f11404fdea957d7ffdf6ed0ccac516059
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SSDEEP
6144:8/673sqnWS7AvyD+oThinaZh9nIJNHg+f2XOoT2jc6oSI:v3sq37Avg+BaD4h2XOox6oSI
Malware Config
Signatures
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resource yara_rule behavioral1/memory/288-55-0x0000000000400000-0x00000000004D8000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Kernel32 = "C:\\Windows\\kernel32.dlI" 99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\kernel32.dlI 99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe File opened for modification C:\Windows\kernel32.dlI 99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 9 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WD\kernel32.dlIfile\shell\open\command\ = "%1" 99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\%WD\kernel32.dlI 99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\%WD 99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WD 99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WD\kernel32.dlIfile 99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WD\kernel32.dlIfile\shell\open 99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\%WD\kernel32.dlI\ = "WD\\kernel32.dlIfile" 99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WD\kernel32.dlIfile\shell\open\command 99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WD\kernel32.dlIfile\shell 99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe"C:\Users\Admin\AppData\Local\Temp\99efaa2960d543cc6fa2e7d07fd2fde0c9c3e7ced64ba297f85aaa23fbfacc9b.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Modifies registry class
PID:288