5e8f38ba6306b49f194c9b4bb4ec160358bdc886a7467840429053c6de8c0448

Analysis

user interaction
yes
max time kernel
6s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
18/04/2026, 18:44

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
MStream.dll
Size 443KB
Sample260418-xdz2faew6m
SHA256 5e8f38ba6306b49f194c9b4bb4ec160358bdc886a7467840429053c6de8c0448
MD5 90b0308b8eed32cbed379425b4a07479
SHA1 40913c1c3ca738b9baa6bb2385dda7856e18250f
SHA512 6325681aebc7d932b44a4688ecf46b90eea2691e1382469768722f3ae0d4ce599c9fcf20870c0c110f40b62627357d3c92b2297664b6be654a1b77466ba9b4f1
SSDEEP 6144:H40Nnx7gwD2DRLcFWGG2J03MfojS6ktCmPUQ3avJRS+RKfhDNlmK41E:H405x7gz6Wb8fV6MCmPUQ3SntUhBG
TLSH
T148A48C90FA8191BED6C8117562BE777BCC34461D43248DD3D35049F8BEA1EE2AEB9342
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

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 1 IoCs

description	pid	Process	procid_target
PID 1336 wrote to memory of 2480	1336	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\MStream.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1336
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\MStream.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2480

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads