11a0d1b4565a6dd94026ef39e4badaa94512d0926f56442b05dde13f2bfe9afd

Analysis

max time kernel
149s
max time network
155s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
22/05/2026, 02:47

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General

Target
libs/libcelt-0061.dll
Size 315KB
Sample260522-daa4csfy2t
SHA256 11a0d1b4565a6dd94026ef39e4badaa94512d0926f56442b05dde13f2bfe9afd
MD5 7e03c9d4ce24a0d0f9016ec842ca8497
SHA1 fa0edcacf64c8137448b76621cf0b11977d4506c
SHA512 cb5b48b689c04cc28e1e3384a5ab836b63d8106798348cd122d4601b25ea9efa66d3318202c40e89199f4d26f6a50f025c446a2c574dd8110ec26ffb39bd9bb2
SSDEEP 6144:0PCPni7V0JIF0PXbeAV5ue4QOlUhzSybZmGzmZjD4UmL:0KPni7V0JIF0PXbeleNOIzSyjzm1J2
TLSH
T148648CA9FBCA8D97DE1503358DD78B351B3CC2944B27DB9B172CF1386A173A15AC2209
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4916	4268	WerFault.exe	81

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 1644 wrote to memory of 4268	1644	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\libs\libcelt-0061.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1644
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\libs\libcelt-0061.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4268
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4268 -s 444
    3⤵
    - Program crash
    PID:4916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4268 -ip 4268
1⤵
PID:1524

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/4268-0-0x000000006E040000-0x000000006E090000-memory.dmp

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