Analysis
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max time kernel
65s -
max time network
19s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
15-02-2022 10:41
Static task
static1
Behavioral task
behavioral1
Sample
AvastAuth._decrypt.dll
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
AvastAuth._decrypt.dll
Resource
win10-en-20211208
windows10_x64
0 signatures
0 seconds
Behavioral task
behavioral3
Sample
AvastAuth._decrypt.dll
Resource
win10v2004-en-20220112
windows10-2004_x64
0 signatures
0 seconds
General
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Target
AvastAuth._decrypt.dll
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Size
162KB
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MD5
adbc1eaaecab410501ea4b2a35f6231a
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SHA1
cca00de2a97c7aae8b9cdffa5379b698d56280f8
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SHA256
6cdd1ef4cccca8c8fc80264eb0bf999cc80857a099a0037b14105b678a9368d3
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SHA512
84e909dabd4f620197b7cea7c4cd9517df2bfc61699e366a408ecd7105e825018bbebac0791e8ff308c53a4da7d29a226ea5f616f82e85f238b74c93cecf094f
Score
3/10
Malware Config
Signatures
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Program crash 1 IoCs
pid pid_target Process procid_target 516 1896 WerFault.exe 27 -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 516 WerFault.exe 516 WerFault.exe 516 WerFault.exe 516 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 516 WerFault.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 308 wrote to memory of 1896 308 rundll32.exe 27 PID 308 wrote to memory of 1896 308 rundll32.exe 27 PID 308 wrote to memory of 1896 308 rundll32.exe 27 PID 308 wrote to memory of 1896 308 rundll32.exe 27 PID 308 wrote to memory of 1896 308 rundll32.exe 27 PID 308 wrote to memory of 1896 308 rundll32.exe 27 PID 308 wrote to memory of 1896 308 rundll32.exe 27 PID 1896 wrote to memory of 516 1896 rundll32.exe 28 PID 1896 wrote to memory of 516 1896 rundll32.exe 28 PID 1896 wrote to memory of 516 1896 rundll32.exe 28 PID 1896 wrote to memory of 516 1896 rundll32.exe 28
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\AvastAuth._decrypt.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:308 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\AvastAuth._decrypt.dll,#12⤵
- Suspicious use of WriteProcessMemory
PID:1896 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1896 -s 2243⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:516
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