a62336567025f15d3680206d9f4e176c123c79c5fe602fdf6af164f87762bba9

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-01-2025 20:40

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General

Target

bin/FileSystem_Stdio.dll
Size

122KB
MD5

b9c70511f562d386caa1e6e7c67d52e8
SHA1

a6280fa878b7329865ed489a111fa40e28985a7f
SHA256

d73c38f0a90e04aedc66a20599faea2449aa345f6a124436ab655ecb02c151a2
SHA512

a76d403b7a29b98a36bf334dee6f9bae26e3745a7d94f6569a7df6f4492610bcbcb51926da9bc1e4eb2b85cc37cabbe2cc05ae1a5412c3debcf69de1dfcc428d
SSDEEP

1536:uEl8Fgjurxjxptf93iqQig4iAjf+TzJoEalf4gF8nO0ALBc4BkGtaoB2NB7:6xxjCqQRLA+or4gFJTKC1taoB2NB7

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1616	4684	WerFault.exe	82

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 2888 wrote to memory of 4684	2888	rundll32.exe	82
PID 2888 wrote to memory of 4684	2888	rundll32.exe	82
PID 2888 wrote to memory of 4684	2888	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bin\FileSystem_Stdio.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bin\FileSystem_Stdio.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4684
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4684 -s 600
    3⤵
    - Program crash
    PID:1616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4684 -ip 4684
1⤵
PID:4896

Network

MITRE ATT&CK Enterprise v15

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 v15

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