4c155f0415d8a4a9e3b668fd9f5d8f4be530fbe71b5f41e09b5c5ba8201d3205

Analysis

max time kernel
148s
max time network
118s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
12/08/2026, 02:42

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General

Target
mopdf/libmupdf.dll
Size 10.1MB
Sample260812-c653yaab48
SHA256 4c155f0415d8a4a9e3b668fd9f5d8f4be530fbe71b5f41e09b5c5ba8201d3205
MD5 29a9ed1b59d22538b26195cd61390310
SHA1 d0fccd8316745aad28620effc78cec9c74bad83a
SHA512 bdcb1af02477d0920d65148405c979f1dc1bb224571abdfe89762066134ca01d73616fe7959514a2a9bd9ba1003d791ca71f9307f70aa8f26f67230c62c36c22
SSDEEP 196608:AKBJwatT4G3M2gdpQy0GvJ4Z08RBCxXB7q3oWhCYCQXBv:rJDgdpQy0Z08RBCxXJq3ogPZX
TLSH
T199B67A62B5819E34D241BF7CD95143BEB20DFD185B5682C386DA2C706DB92DA1C38FB2
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3404	2408	WerFault.exe	89

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 2176 wrote to memory of 2408	2176	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\mopdf\libmupdf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\mopdf\libmupdf.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2408
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2408 -s 556
    3⤵
    - Program crash
    PID:3404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2408 -ip 2408
1⤵
PID:5816

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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