4cc37020c8c53248e9322334549763e12ed7f58dad08b5b924c77f9166ca49fb | Triage

Analysis

max time kernel
81s
max time network
167s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2023 22:08

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General

Target

System/RGSS301.dll
Size

1.0MB
MD5

dd25855ac39d32da033902fc58fa210b
SHA1

0ffa23a4d0b81438a329258f5c8d3b3403f4aa94
SHA256

27647690ed16218cd988dd71069fdca67207515b2a2df775be361f0198ab6876
SHA512

07f7f7cb4eda2165b4b28456fb01d4edea6e3d5f305dde19256865777905a0d0bb1d13ce1194a8639d740f633ccf1507a1b87530644d5e2d512a86829195ae60
SSDEEP

24576:+pc8WbPqpzFwdPhet279ae3P7zqP2JzCNkX67Flr1nH0F3ia:+pc8W7qEdPhet2hae3HfJR2Uf

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4720 4360 WerFault.exe rundll32.exe

Modifies registry class 3 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 4620 wrote to memory of 4360	4620	rundll32.exe	rundll32.exe
PID 4620 wrote to memory of 4360	4620	rundll32.exe	rundll32.exe
PID 4620 wrote to memory of 4360	4620	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\System\RGSS301.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4620
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\System\RGSS301.dll,#1
  2⤵
  - Modifies registry class
  PID:4360
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4360 -s 712
    3⤵
    - Program crash
    PID:4720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4360 -ip 4360
1⤵
PID:5016

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/4360-132-0x0000000000000000-mapping.dmp

Download
memory/4360-133-0x0000000010000000-0x0000000010324000-memory.dmp

Filesize
3.1MB

Download
memory/4360-134-0x00000000025A0000-0x00000000025A4000-memory.dmp

Filesize
16KB

Download