5b4acaf5006310cadac78c9de2feb7083fb7422b59101c1843038862f714d357

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
08/08/2026, 12:18

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General

Target
pdfcorE8.dll
Size 5.2MB
Sample260808-pg2qfa1saw
SHA256 5b4acaf5006310cadac78c9de2feb7083fb7422b59101c1843038862f714d357
MD5 f58d02e598560097c2aa54cfe79ad244
SHA1 a50470aa906eb46e91ec20c9e43eb954738f23a0
SHA512 14fb82462963b1a96127538d7ec23b0a543b347def1e1652d1b65972d86bd078402989bda77e992689e8e6bd441b28979d122bc50e4717e843e9919ff454bdbc
SSDEEP 98304:2y/6ViOMXkk1VtnMvsFNbuWjs2Xwk5bNM3Lkd4tZ4OiZrq1DfPHNADtV6v+:2DViwk1XywuWjs2XwkxeHtZ4O7NADtVb
TLSH
T15246D0123DBD0CEDF0AB52344E98F2F4E7AEBDB01E390A5F11607619B931771492896B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3053180483-1881419501-3594244048-1000\Control Panel\International\Geo\Nation	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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 2 IoCs

description	pid	Process	procid_target
PID 3896 wrote to memory of 5224	3896	rundll32.exe	85
PID 5224 wrote to memory of 3928	5224	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\pdfcorE8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3896
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\pdfcorE8.dll,#1
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5224
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3928

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

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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