941322a98820d73533bdfd8376db8567dfb9758e92867d36be5b9b1d08327b63

Analysis

max time kernel
149s
max time network
93s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
29/05/2026, 01:01

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General

Target
$PLUGINSDIR/AccessControl.dll
Size 19KB
Sample260529-bc8rasfs7n
SHA256 941322a98820d73533bdfd8376db8567dfb9758e92867d36be5b9b1d08327b63
MD5 931e0b48d95415c29626569a860e6327
SHA1 f5f60d01cf69bb3fa0a49e0edd332ac9e5741973
SHA512 cf3235f66c2ff76a81a03b6ce49b0a670a2fe5755403c026db1bccfb732c271a26c79b97372484b92e7398d820455d613d255d9e9affcd5bf6864727132f9e08
SSDEEP 384:1hM+zbbpfRWZGXHHQIYizr3a5BG8gSJIVE8E9VF0NyTz:nLbppWZGXn5YizTafhB2EF
TLSH
T1A2929E138A741C16DC5B8FB675C4CC39AE39BE518EE0C6D2110DC5994BD0342ABDA3BD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

discovery upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 2 IoCs

resource	yara_rule
behavioral4/memory/1672-0-0x0000000075160000-0x000000007516B000-memory.dmp	UPX
behavioral4/memory/1672-1-0x0000000075160000-0x000000007516B000-memory.dmp	UPX

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral4/memory/1672-0-0x0000000075160000-0x000000007516B000-memory.dmp	upx
behavioral4/memory/1672-1-0x0000000075160000-0x000000007516B000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1216	1672	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 4456 wrote to memory of 1672	4456	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\AccessControl.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4456
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\AccessControl.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1672
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1672 -s 468
    3⤵
    - Program crash
    PID:1216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1672 -ip 1672
1⤵
PID:4644

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

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Downloads

memory/1672-0-0x0000000075160000-0x000000007516B000-memory.dmp

Download

memory/1672-1-0x0000000075160000-0x000000007516B000-memory.dmp