479d68213f9848ae8a478ba7cdd0454e382763efaa985d770111135224adff37

Analysis

max time kernel
104s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20250410-en
resource tags

arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
submitted
11/04/2025, 18:46

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General

Target

avcodec-53.dll
Size

1.0MB
MD5

bba1fe328cea501fcce1e5df16276439
SHA1

ed4ad3a8d6f0e3dd86abb19bc18127f960ea2131
SHA256

f5522d2c936de8d53f97a6ec439d8f8391cb50a0bc6008a399f9454c00929d35
SHA512

8f585d57baa39d3e5e6b62efea53b6b3797319ae86c0c4373774d08e284a49c0bd005e200ae4fabc789470b3f100f98c8ce503fd4702f79dcbf4be4aabc58a9e
SSDEEP

24576:AvFsWsTZw0h9+Ed1c0IHtUqnm5AmeU4QATwj5H7liH3Yq:ANs9Fw+p1c0IHtUqsAmevTwtliH3Yq

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4412	3644	WerFault.exe	86

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

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

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2448 wrote to memory of 3644	2448	rundll32.exe	86
PID 2448 wrote to memory of 3644	2448	rundll32.exe	86
PID 2448 wrote to memory of 3644	2448	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\avcodec-53.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\avcodec-53.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3644
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3644 -s 616
    3⤵
    - Program crash
    PID:4412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3644 -ip 3644
1⤵
PID:4008

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3644-15-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-7-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-3-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-22-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-38-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-37-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-39-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-36-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-35-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-34-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-32-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-42-0x00000000753E2000-0x00000000754C0000-memory.dmp

Filesize
888KB

Download
memory/3644-41-0x00000000753B0000-0x00000000753D7000-memory.dmp

Filesize
156KB

Download
memory/3644-29-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-27-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-26-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-31-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-30-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-25-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-24-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-8-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-21-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-20-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-17-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-18-0x00000000753E2000-0x00000000754C0000-memory.dmp

Filesize
888KB

Download
memory/3644-16-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-14-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-13-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-12-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-11-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-10-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-9-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-6-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-5-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-4-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-2-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-1-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download
memory/3644-0-0x00000000753E0000-0x0000000075592000-memory.dmp

Filesize
1.7MB

Download