cbef8df49983b92dc428f4cb970ca4c3f9690774e400a2720bd41b6dea95229b

Analysis

max time kernel
149s
max time network
149s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
23/04/2026, 13:13

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General

Target
dup2patcher.dll
Size 382KB
Sample260423-qf4dbaev51
SHA256 cbef8df49983b92dc428f4cb970ca4c3f9690774e400a2720bd41b6dea95229b
MD5 86a2f12a950b5f57accd8ee868e7cc65
SHA1 5599c5cc09227c72b2551f60e45fa3b670fa96ab
SHA512 2fafd10c0cd8ea143e24825ac927619d124e37683922d166cc734c22816bf441d73607de73cabb9525ba82d2431d7b9d1954a9b9bd28dfc7a1ad8623438d7cce
SSDEEP 6144:yTYc2ldltF9jWW8I9MEZ65GeBNBYbUstJNRH2N:jc2ldltF9jWPIqBNI7thWN
TLSH
T1F0847D007AD1C1B5D16906344866CF708B3ABD209BE2DF5F2F98067D1F26391EA36F26
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3088	644	WerFault.exe	80

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 4932 wrote to memory of 644	4932	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dup2patcher.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\dup2patcher.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:644
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 644 -s 532
    3⤵
    - Program crash
    PID:3088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 644 -ip 644
1⤵
PID:3992

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/644-0-0x00000000750B0000-0x0000000075128000-memory.dmp

Download

memory/644-1-0x00000000750B0000-0x0000000075128000-memory.dmp