3cdf7e3999c68e837b015e63240ae73961da2cd583306dd988980f1499dd74ef

Analysis

max time kernel
149s
max time network
152s
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, 06:14

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General

Target
pdfcorE8.dll
Size 5.2MB
Sample260808-gznmjacb45
SHA256 3cdf7e3999c68e837b015e63240ae73961da2cd583306dd988980f1499dd74ef
MD5 9848dd054ef4c3cedc5dd1d76d5cf560
SHA1 c5047c199f014e76b01df08ee937a108ef6f0fe5
SHA512 d4791e14157312a2377eed0da08127989d42da32e74dc05dcd766d6ba3c59deae31e8374b7c1d14767a3e9489b97ce795578377d7db02fa6f85cfb4f8ed08595
SSDEEP 98304:2y/6ViOMXkk1VtnMvsFNbuWjs2ywk5bNM3Lkd4tZ4OiZrq1DfPHNADtV6v+:2DViwk1XywuWjs2ywkxeHtZ4O7NADtVb
TLSH
T16F46D0123DBD0CEDF0AB52344E98F2F4E7AEBDB01E390A5F11607619B931771492896B
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-1-5-21-540052884-2969440504-464782435-1000\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 2412 wrote to memory of 2244	2412	rundll32.exe	84
PID 2244 wrote to memory of 3272	2244	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\pdfcorE8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2412
- 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:2244
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3272

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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