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Analysis
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max time kernel
146s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
11/01/2024, 11:34
Static task
static1
Behavioral task
behavioral1
Sample
a8d9e78e7377d989847172a510ff43129cdded068e6727b7cbeff83237c12e60.dll
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
a8d9e78e7377d989847172a510ff43129cdded068e6727b7cbeff83237c12e60.dll
Resource
win10v2004-20231222-en
General
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Target
a8d9e78e7377d989847172a510ff43129cdded068e6727b7cbeff83237c12e60.dll
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Size
2.0MB
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MD5
4b43e2c19253905817b395d9343b7eda
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SHA1
555c1ea0ed0680d2479071f46c1a68c1f8c8389a
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SHA256
a8d9e78e7377d989847172a510ff43129cdded068e6727b7cbeff83237c12e60
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SHA512
897798ea137d0a65ef180f15b9475992b7f7c18a78978b5d618b630cba5a30f01d776a767174c37bc23f6a3e6923aeb4db156cd9271d9a228b7e685d4326b8b0
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SSDEEP
49152:YbR9b0sn90JHxac0DswNZopwECn8zGkHJOQUZF66:e9b0s90JHxsDswZoe/nyGkHJPUt
Malware Config
Signatures
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Loads dropped DLL 1 IoCs
pid Process 1924 rundll32.exe -
resource yara_rule behavioral2/memory/1924-4-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/1924-7-0x0000000010000000-0x0000000010030000-memory.dmp upx -
Drops file in Program Files directory 1 IoCs
description ioc Process File created C:\Program Files\Common Files\System\symsrv.dll rundll32.exe -
Program crash 2 IoCs
pid pid_target Process procid_target 4496 1924 WerFault.exe 14 520 1924 WerFault.exe 14 -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4352 wrote to memory of 1924 4352 rundll32.exe 14 PID 4352 wrote to memory of 1924 4352 rundll32.exe 14 PID 4352 wrote to memory of 1924 4352 rundll32.exe 14
Processes
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\a8d9e78e7377d989847172a510ff43129cdded068e6727b7cbeff83237c12e60.dll,#11⤵
- Loads dropped DLL
- Drops file in Program Files directory
PID:1924 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1924 -s 5442⤵
- Program crash
PID:4496
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1924 -s 6402⤵
- Program crash
PID:520
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\a8d9e78e7377d989847172a510ff43129cdded068e6727b7cbeff83237c12e60.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4352
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 1924 -ip 19241⤵PID:4724
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1924 -ip 19241⤵PID:4168