Analysis
-
max time kernel
143s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20230621-en -
resource tags
arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system -
submitted
29-06-2023 15:52
Static task
static1
Behavioral task
behavioral1
Sample
nss3.dll
Resource
win7-20230621-en
windows7-x64
1 signatures
150 seconds
Behavioral task
behavioral2
Sample
nss3.dll
Resource
win10v2004-20230621-en
windows10-2004-x64
2 signatures
150 seconds
General
-
Target
nss3.dll
-
Size
2.0MB
-
MD5
1cc453cdf74f31e4d913ff9c10acdde2
-
SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe
-
SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
-
SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
-
SSDEEP
49152:fECf12gikHlnKGxJRIB+y5nvxnaOSJ3HFNWYrVvE4CQsgzMmQfTU1NrWmy4KoAzh:J7Tf8J1Q+SS5/nr
Score
5/10
Malware Config
Signatures
-
Drops file in System32 directory 1 IoCs
Processes:
svchost.exedescription ioc process File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{34B091BB-59D1-4192-9284-1849A45933D4}.catalogItem svchost.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
rundll32.exedescription pid process target process PID 2188 wrote to memory of 4564 2188 rundll32.exe rundll32.exe PID 2188 wrote to memory of 4564 2188 rundll32.exe rundll32.exe PID 2188 wrote to memory of 4564 2188 rundll32.exe rundll32.exe
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\nss3.dll,#11⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\nss3.dll,#12⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p1⤵
- Drops file in System32 directory