ed33b03df3b54da299df5b2452ecf637ca91b46325fa9e318a6fbff92f498a20

Resubmissions

09/11/2025, 03:52

251109-efe5yazngk

09/11/2025, 03:47

251109-ecl43sdx2b3

Analysis

geolocation tags

nanew-jerseynorth-americaunited-statesususa
max time kernel
149s
max time network
145s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20251017-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20251017-enlocale:en-usos:windows10-ltsc_2021-x64system
submitted
09/11/2025, 03:47

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General

Target
pdf.dll
Size 11.7MB
Sample251109-ecl43sdx2b
SHA256 7ef64b7a3f2d48075d7cb31dd359ccee0281fbb0d245d6d974886544282dfa89
MD5 f850fe26d47102d120dd0942aa9e5d81
SHA1 b890474a71c21f9ace95efbd74aa778b1fb90c49
SHA512 d29d443db4fd27cf9a319d3c2744c077e82be9a33fa6bfa4a94dc39a3e005984bf8b605b40c6229ebadc5059c7c1b4498cca9e8c32d7bd09fac5b45df32f5d52
SSDEEP 196608:RD5mJR1VwY8dq0awkafBrRGryVwfh8rfBRwI2dBXF5O13/wCYCe/2gb:aJR7P0hkafBrRGrywfh84F5O134Ppjb
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4204	1772	WerFault.exe	80

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 3 IoCs

description	pid	Process	procid_target
PID 4744 wrote to memory of 1772	4744	rundll32.exe	80
PID 4744 wrote to memory of 1772	4744	rundll32.exe	80
PID 4744 wrote to memory of 1772	4744	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\pdf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\pdf.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1772
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1772 -s 644
    3⤵
    - Program crash
    PID:4204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1772 -ip 1772
1⤵
PID:4828

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

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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