0568e45dfc54c298f485c20a0a309764fc0008fd525e20e524d8ab00c348056e

Analysis

max time kernel
361s
max time network
364s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 14:53

Target

_xlsx.dll
Size

501KB
MD5

74397528351ecf67517b7fc3b9278648
SHA1

e5cd0c0d4d360639ba47e1ccdf93e062053bf161
SHA256

ca260f024587ae1fde8f8e17585078df81fda26b95d1cef168731062a5f9c001
SHA512

1b6a27ce0c0865a05dc985bdf18a88b2bea8c45647a563f121c45b12196bd3e7d868940b292d5b275f48dea86d4b0832dc01709060839d65f96fc09c0968806b
SSDEEP

12288:EEGOOhvszPn3kRMFROe4DoT+UhJfkeP6OfEWmiq:EOpT3kQOe4DI+wf1P6jZ1

Score

3^/10

discovery

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2608 2496 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
2608	2496	WerFault.exe	rundll32.exe

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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 576 wrote to memory of 2496	576	rundll32.exe	rundll32.exe
PID 576 wrote to memory of 2496	576	rundll32.exe	rundll32.exe
PID 576 wrote to memory of 2496	576	rundll32.exe	rundll32.exe
PID 576 wrote to memory of 2496	576	rundll32.exe	rundll32.exe
PID 576 wrote to memory of 2496	576	rundll32.exe	rundll32.exe
PID 576 wrote to memory of 2496	576	rundll32.exe	rundll32.exe
PID 576 wrote to memory of 2496	576	rundll32.exe	rundll32.exe
PID 2496 wrote to memory of 2608	2496	rundll32.exe	WerFault.exe
PID 2496 wrote to memory of 2608	2496	rundll32.exe	WerFault.exe
PID 2496 wrote to memory of 2608	2496	rundll32.exe	WerFault.exe
PID 2496 wrote to memory of 2608	2496	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\_xlsx.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:576
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\_xlsx.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2496
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2496 -s 240
    3⤵
    - Program crash
    PID:2608

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/2496-0-0x0000000000900000-0x0000000000A05000-memory.dmp

Filesize
1.0MB

Download
memory/2496-2-0x00000000001A0000-0x0000000000256000-memory.dmp

Filesize
728KB

Download
memory/2496-4-0x00000000002A0000-0x00000000002B2000-memory.dmp

Filesize
72KB

Download