0568e45dfc54c298f485c20a0a309764fc0008fd525e20e524d8ab00c348056e

Analysis

max time kernel
91s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2024 15:27

Target

_xls.dll
Size

489KB
MD5

587cc40006d6675edc8c4e9e7b25ff04
SHA1

fdfc4944f5b54757f06f9b4d16577c9791d90c41
SHA256

daf81f2a198a6be19549e1587f5ef1e750c858f7d890368198865e7110ffa91e
SHA512

ba923e7902a9ede29b6274d1f604e5eb21cc826a0e5d290ab263a1f8713e4b62e2a8deda0026bb01b65008703c37aad97449e562f3f6f97e9d6b0017f463eda3
SSDEEP

12288:oGZnd583ZZNG3f7OXWsG309kZJfEWmLwQ:dGzNUOXWpokUZ8Q

Score

3^/10

discovery

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2028 2248 WerFault.exe rundll32.exe
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
discovery

System Language Discovery
T1614.001

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe

pid	pid_target	process	target process
2028	2248	WerFault.exe	rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 5008 wrote to memory of 2248	5008	rundll32.exe	rundll32.exe
PID 5008 wrote to memory of 2248	5008	rundll32.exe	rundll32.exe
PID 5008 wrote to memory of 2248	5008	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\_xls.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5008
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\_xls.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2248
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2248 -s 616
    3⤵
    - Program crash
    PID:2028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2248 -ip 2248
1⤵
PID:1408

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

System Language Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

memory/2248-0-0x0000000002990000-0x0000000002A46000-memory.dmp

Filesize
728KB

Download
memory/2248-2-0x00000000011A0000-0x00000000011B2000-memory.dmp

Filesize
72KB

Download