3b1aef23d78ff38d1b28ed76523997ec996fb2c0d4031248a4f0f78fd513f365

Analysis

max time kernel
149s
max time network
156s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
02/06/2026, 09:24

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General

Target
3b1aef23d78ff38d1b28ed76523997ec996fb2c0d4031248a4f0f78fd513f365.dll
Size 318KB
Sample260602-ldcelahy7t
SHA256 3b1aef23d78ff38d1b28ed76523997ec996fb2c0d4031248a4f0f78fd513f365
MD5 79688164eba96c3c2a0de6cbe8a8fd55
SHA1 bccbc462cd41eace9e2d08ddf0fab6823515dcf8
SHA512 03d78f903253dcfb0aa734dcbf82092140827e77492af1c216a989e04c70b3e7e62de3b40d99107cd517b13614e38aacdfac2a753d177f4caba4a429a5c13378
SSDEEP 6144:zq6MgbA94GYQ1IBOBLZI9Q9il9BTTJFyA1r:z1MT94GYQ1BDI9Q903TfyM
TLSH
T129649E11F98DC0F9FD490870649A77B68BB97C2046E8EB97D7A4DE1D1C33251B60A28F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

6^/10

discovery persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1768642833-2142038154-4041560723-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\SysWOW64\\rundll32.exe"	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5040	3208	WerFault.exe	79

System Location Discovery: System Language Discovery 1 TTPs 2 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2448 wrote to memory of 3208	2448	rundll32.exe	79

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b1aef23d78ff38d1b28ed76523997ec996fb2c0d4031248a4f0f78fd513f365.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b1aef23d78ff38d1b28ed76523997ec996fb2c0d4031248a4f0f78fd513f365.dll,#1
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:3208
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3208 -s 788
    3⤵
    - Program crash
    PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3208 -ip 3208
1⤵
PID:5036

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe
1⤵
- System Location Discovery: System Language Discovery
PID:5084

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3208-0-0x0000000010034000-0x0000000010035000-memory.dmp

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memory/3208-1-0x0000000001260000-0x0000000001261000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads