8136a9b1252e0d8c293c6c99444b371f3f7dc9fccbf351597a0aec029fe92a96

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
06/08/2026, 05:09

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General

Target
pdfCORE8.dll
Size 5.2MB
Sample260806-ftgrcstdpg
SHA256 8136a9b1252e0d8c293c6c99444b371f3f7dc9fccbf351597a0aec029fe92a96
MD5 df9bca2bfe7e5cc1c531259b3821b0a7
SHA1 fa2f10ed742434a2f4e8f072dcbbb82b5ef4bcb0
SHA512 eb1d2b3aeda22c2eb077f4e71ee981305d4b8dd5e57c80bd2f8b6ddff141df8297e6721e3a0bd34c9862068df4b33a5cf0be5e246c34a5fe04481bd2cae0f9ab
SSDEEP 98304:enbMu+ssczwCAlZUIYEN7tb1vEHqmP+iNQifGwznVGpZ4OiZrq1DfPHNADtV6v+:epMN7tb1MHqmP+iCiVGpZ4O7NADtV6v+
TLSH
T10E46C0227D8C006EE09B11334F99B6B5EABEADB0172D31BF1180F61DB93B7414D195AB
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 4312 wrote to memory of 4408	4312	rundll32.exe	85
PID 4408 wrote to memory of 4624	4408	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\pdfCORE8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4312
- 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:4408
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4624

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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