0cde7a5e20c92c31b1b9e6c40704efb67c7b13a4c78cb5b792605c43bf39cfc7

Analysis

max time kernel
149s
max time network
150s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20260513-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
submitted
22/05/2026, 14:02

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General

Target
hostfxr.dll
Size 303KB
Sample260522-rb7evac19k
SHA256 0cde7a5e20c92c31b1b9e6c40704efb67c7b13a4c78cb5b792605c43bf39cfc7
MD5 53250ff4dd4cb579be655e9e27a8460f
SHA1 ec5e263aec9ab805ee2108f5de3fbb5977a8c0cf
SHA512 916114baa49f8cb95a5f8e073edb2ca3ac7643b02f46e269bdf1d5805bbd62fa06a51298c79cdfe42b9fbf1c497591df31edc6d84c14be7db5c4c6748fc7f077
SSDEEP 6144:wUrFIqYA5rCxCmgStCYEnOqQP3waqDJRCh6Gmq65STK3dvaidPym:wUZfYA5uxCmgSMYEnOqQPgaq+mqOhRa3
TLSH
T1C6643B21B69E8239F5B6577069786FB690BE7C189FF0C1CF5340492E59226C26B30F27
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3172	2636	WerFault.exe	83

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 4584 wrote to memory of 2636	4584	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\hostfxr.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4584
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\hostfxr.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2636
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2636 -s 612
    3⤵
    - Program crash
    PID:3172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2636 -ip 2636
1⤵
PID:4980

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

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