80d28b14d2172c2a3a76a718b604d120ff2a8e80424d68790afbe0bd267ee064

Analysis

max time kernel
128s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
06-05-2024 03:13

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General

Target

CefSubProcess.dll
Size

187KB
MD5

591699755978298f7c8ceb687109e913
SHA1

ff338969d75f887b8563052cc51db94ff3a39267
SHA256

8c67d95570059507eb94ab9f4882421c9a9e1ffca40315d73345012dd6459e0a
SHA512

310fce3514ab6059b68650e533c67ec87adaf04b4d2d8179bf8674cfa730a5105b5614c4acb9c52cc6820604d93d4e2c4dbdce1c3bb105391a187096cc91c6e5
SSDEEP

3072:FetZuw+XkcU9Ncq6fId+WQ1mVH5rkazMRBJO8jIF4bn7YPTOj56twpnf9Ht02s:4tYw+XDkNcjfEHVZ0ZOx4PY7Oj5XFbs

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1044 3796 WerFault.exe rundll32.exe

pid	pid_target	process	target process
1044	3796	WerFault.exe	rundll32.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 2636 wrote to memory of 3796	2636	rundll32.exe	rundll32.exe
PID 2636 wrote to memory of 3796	2636	rundll32.exe	rundll32.exe
PID 2636 wrote to memory of 3796	2636	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\CefSubProcess.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\CefSubProcess.dll,#1
  2⤵
  - Checks processor information in registry
  PID:3796
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3796 -s 864
    3⤵
    - Program crash
    PID:1044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3796 -ip 3796
1⤵
PID:3504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3796-1-0x0000000000F00000-0x0000000000F42000-memory.dmp

Filesize
264KB

Download
memory/3796-0-0x0000000000EE0000-0x0000000000EEC000-memory.dmp

Filesize
48KB

Download