Overview
overview
7Static
static
7VirtualTreesD7.dll
windows7-x64
3VirtualTreesD7.dll
windows10-2004-x64
3autoupdater.exe
windows7-x64
7autoupdater.exe
windows10-2004-x64
7fos.exe
windows7-x64
7fos.exe
windows10-2004-x64
7license.rtf
windows7-x64
4license.rtf
windows10-2004-x64
1rtl70.dll
windows7-x64
3rtl70.dll
windows10-2004-x64
3uninstaller.chm
windows7-x64
6uninstaller.chm
windows10-2004-x64
6uruninstaller.exe
windows7-x64
7uruninstaller.exe
windows10-2004-x64
7vcl70.dll
windows7-x64
3vcl70.dll
windows10-2004-x64
3vclx70.dll
windows7-x64
3vclx70.dll
windows10-2004-x64
3yufilter.dll
windows7-x64
3yufilter.dll
windows10-2004-x64
3安装说明.url
windows7-x64
1安装说明.url
windows10-2004-x64
1Analysis
-
max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system -
submitted
20/08/2024, 00:05
Behavioral task
behavioral1
Sample
VirtualTreesD7.dll
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
VirtualTreesD7.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral3
Sample
autoupdater.exe
Resource
win7-20240705-en
Behavioral task
behavioral4
Sample
autoupdater.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral5
Sample
fos.exe
Resource
win7-20240704-en
Behavioral task
behavioral6
Sample
fos.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral7
Sample
license.rtf
Resource
win7-20240729-en
Behavioral task
behavioral8
Sample
license.rtf
Resource
win10v2004-20240802-en
Behavioral task
behavioral9
Sample
rtl70.dll
Resource
win7-20240704-en
Behavioral task
behavioral10
Sample
rtl70.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral11
Sample
uninstaller.chm
Resource
win7-20240708-en
Behavioral task
behavioral12
Sample
uninstaller.chm
Resource
win10v2004-20240802-en
Behavioral task
behavioral13
Sample
uruninstaller.exe
Resource
win7-20240704-en
Behavioral task
behavioral14
Sample
uruninstaller.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral15
Sample
vcl70.dll
Resource
win7-20240708-en
Behavioral task
behavioral16
Sample
vcl70.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral17
Sample
vclx70.dll
Resource
win7-20240704-en
Behavioral task
behavioral18
Sample
vclx70.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral19
Sample
yufilter.dll
Resource
win7-20240729-en
Behavioral task
behavioral20
Sample
yufilter.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral21
Sample
安装说明.url
Resource
win7-20240704-en
Behavioral task
behavioral22
Sample
安装说明.url
Resource
win10v2004-20240802-en
General
-
Target
yufilter.dll
-
Size
12KB
-
MD5
ce9d3feb585509a3e66fedd2c92a8395
-
SHA1
b1aa72067eaabefd1d21ecc22328df860ed99b3f
-
SHA256
19f36bf6dfe5acc6c20479eb51c3c3c8a85bb72e61fd2dced15b6d17db2873da
-
SHA512
3890e97fb56938404547bcdd328d674148f5613ccb21b139415f478ff9292538fc818c8c9eba8f950c4027241d96ca03a64c70255523577a381d80449b653418
-
SSDEEP
192:nnJ56CKtaGIKE5+wHVL20uuVAFMPcYt8e7o:nJgBBIKlwH9XueAF4tn
Malware Config
Signatures
-
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2572 wrote to memory of 2092 2572 rundll32.exe 31 PID 2572 wrote to memory of 2092 2572 rundll32.exe 31 PID 2572 wrote to memory of 2092 2572 rundll32.exe 31 PID 2572 wrote to memory of 2092 2572 rundll32.exe 31 PID 2572 wrote to memory of 2092 2572 rundll32.exe 31 PID 2572 wrote to memory of 2092 2572 rundll32.exe 31 PID 2572 wrote to memory of 2092 2572 rundll32.exe 31
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\yufilter.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2572 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\yufilter.dll,#12⤵
- System Location Discovery: System Language Discovery
PID:2092
-