356860433362f69f0a34526a7abd4e35dadc34f4285f57d0b084ca38c8234b1f

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
30/06/2026, 12:14

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General

Target
1.dll
Size 178KB
Sample260630-pellfaew2t
SHA256 356860433362f69f0a34526a7abd4e35dadc34f4285f57d0b084ca38c8234b1f
MD5 53e58245086e31a122dc4f44f6c45cac
SHA1 7e25a53f01c0c666249a483fb6d1599723dcaafe
SHA512 d61e6ca768456c82ead96448ffad3784aace7da51a67062335e9435188422d36d4ee12198607b9b08646c734583356002fed52c4ad3cfb9b85f56b90fc4dedb8
SSDEEP 3072:LvTmCzcn8YcgUioB07JP+UXgoWCYZAkhPPKOAg0Fuj0ZmkgFzXNjF:Lx9YcgUXB0NPlXO/AOTLxjF
TLSH
T1F4048E41B4C1C076D67F12390574DAB55B3EB9608EB5CEAF67D44E7F0F30280DA21AA6
MD5 SHA1 SHA512 SSDEEP TLSH

Score

6^/10

discovery persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3053180483-1881419501-3594244048-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MyStartupApp = "C:\\Windows\\SysWOW64\\rundll32.exe"	rundll32.exe

Drops file in System32 directory 31 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\KERNELBASE.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\AcLayers.DLL	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\OLEAUT32.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\shcore.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\ntdll.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\combase.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\MSCTF.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\win32u.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\gdi32full.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\SHELL32.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\imagehlp.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\ADVAPI32.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\sechost.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\ucrtbase.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\bcrypt.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\KERNEL32.DLL	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\SETUPAPI.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\uxtheme.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\rundll32.exe	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\USER32.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\RPCRT4.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\cfgmgr32.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\MPR.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\sfc_os.DLL	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\apphelp.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\msvcrt.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\msvcp_win.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\SHLWAPI.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\IMM32.DLL	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\GDI32.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\sfc.dll	rundll32.exe

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 behavior: EnumeratesProcesses 2 IoCs

pid	Process
4732	rundll32.exe
4732	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4032 wrote to memory of 4732	4032	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4032
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1.dll,#1
  2⤵
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4732

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe
1⤵
- System Location Discovery: System Language Discovery
PID:1316

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

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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