cc9dd67664c7aeace554d70bdf08ba06005dc48a32f44245e7a0a4feb7ca4b25

Analysis

max time kernel
298s
max time network
236s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
15/08/2026, 16:07

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General

Target
Pdfcore8.dll
Size 5.5MB
Sample260815-tk1prszbrg
SHA256 cc9dd67664c7aeace554d70bdf08ba06005dc48a32f44245e7a0a4feb7ca4b25
MD5 14afbe985c622f7252a5e4fce70975d8
SHA1 5b678160511ca1201fc7e484a02b904acadd8841
SHA512 334cc223aa2c3663506ddd4fc65bc7f858339a86e1a0b6a9d183c1fd8beb652084bc6659039e71138377fe875c3220da75a03700d0e43ca301ebd6414876f4b7
SSDEEP 98304:xPGFGY4xkSDQU+7JZGBqBz5qZ1Ia7ZIJYyP26hCF21ZOZ4OiZrq1DfPHNADtV6vd:xPUCCJ5qZ1H7ZuJPGciZ4O7NADtV6v+Y
TLSH
T16046CF113D9C80D6F07A1233CEA9B6ACF26EAD643F7601972680B79DFD327414B1856B
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-1-5-21-2937465464-4167303362-2236413517-1000\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 4500 wrote to memory of 1816	4500	rundll32.exe	87
PID 1816 wrote to memory of 1616	1816	rundll32.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Pdfcore8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4500
- 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:1816
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1616

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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