c65b7afb05ee2b2687e6280594019068c3d3829182dfe8604ce4adf2116cc46e | Triage

Analysis

max time kernel
135s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
30/06/2023, 12:02

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General

Target

nss3.dll
Size

1.9MB
MD5

f67d08e8c02574cbc2f1122c53bfb976
SHA1

6522992957e7e4d074947cad63189f308a80fcf2
SHA256

c65b7afb05ee2b2687e6280594019068c3d3829182dfe8604ce4adf2116cc46e
SHA512

2e9d0a211d2b085514f181852fae6e7ca6aed4d29f396348bedb59c556e39621810a9a74671566a49e126ec73a60d0f781fa9085eb407df1eefd942c18853be5
SSDEEP

49152:6dvFywfzFAF7fg39IwA49Kap9bGt+qoStYnOsbqbeQom7gN7BpDD5SkIN1g5D92+:pptximYfpx8OwNiVG09

Score

5^/10

Malware Config

Signatures

Drops file in System32 directory 8 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{BB0DB4E2-CB6B-4746-BAD3-9A1FD6A4E285}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{73A8D5CF-281F-4635-A759-421064BC1041}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{E1942A4A-6689-4D4F-9EA3-3D04D4034E49}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{F6AEC2B7-D62B-4225-A9ED-41CB81ECE33A}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{42FE71A9-6777-4AA0-9E90-D43A6294BB1B}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{42245422-76D9-4FC5-9301-EDBEAB58FA47}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{758B5AEC-E987-4779-B063-1C36BBC69868}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{BB4E582F-8C83-421D-85C5-9481E6BBC06C}.catalogItem	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 4868	2652	rundll32.exe	84
PID 2652 wrote to memory of 4868	2652	rundll32.exe	84
PID 2652 wrote to memory of 4868	2652	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\nss3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2652
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\nss3.dll,#1
  2⤵
  PID:4868

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
PID:1804

Network

MITRE ATT&CK Matrix

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