Analysis
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max time kernel
35s -
max time network
40s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
29-03-2024 11:55
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
4123.dll
Resource
win7-20240221-en
windows7-x64
4 signatures
60 seconds
General
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Target
4123.dll
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Size
48KB
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MD5
f776deb4df137b37dcae5406c8f3a07a
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SHA1
f6a31b594fca39c118927405fa4d14353b8fd49a
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SHA256
93cc5e6a6b671d9b0124ade32ae8b09269de9f03c5c5e66347fbfc7a8c3b305e
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SHA512
4077b4214b4683bb4776d470027e61fcc3cb3e78beb9377674e4a4de9115d52911e39cb29a566ab446c6962a252ce01020ffd616b5854a9d8230414262bfafe2
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SSDEEP
768:fw2jnhaqqUgQeONXr27iLAkfP69FyfQZWBS:hjnEQeON727CA2G
Malware Config
Signatures
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Nloader payload 4 IoCs
Processes:
resource yara_rule behavioral2/memory/5044-3-0x0000000002BB0000-0x0000000002BB9000-memory.dmp nloader behavioral2/memory/5044-5-0x0000000001480000-0x0000000001486000-memory.dmp nloader behavioral2/memory/5044-8-0x0000000002BC0000-0x0000000002BC7000-memory.dmp nloader behavioral2/memory/5044-11-0x0000000002BE0000-0x0000000002BE5000-memory.dmp nloader -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1716 5044 WerFault.exe rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
rundll32.exedescription pid process target process PID 684 wrote to memory of 5044 684 rundll32.exe rundll32.exe PID 684 wrote to memory of 5044 684 rundll32.exe rundll32.exe PID 684 wrote to memory of 5044 684 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\4123.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:684 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\4123.dll,#12⤵PID:5044
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 9123⤵
- Program crash
PID:1716
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5044 -ip 50441⤵PID:4588