5f8bd8ae8b34ea918280f75581949480d33f056898efa06d6f5f741d7d08407a

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
24/08/2024, 05:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

$_2_/UFDeMux.dll
Size

165KB
MD5

904a493808fe56c4a06d6a935c5f6222
SHA1

05af1104eb0c7299c95df0474c1b6f5454bed9ab
SHA256

dbfc75a0e981376318d54f9b4285aa5ca313ac963c6c66b571a9dc690d63b854
SHA512

72f33d0df5ca7212bdafd14f79d0b52b73eeb0ebfbe50d24895a44cc85101b8510bc308d58d8e5708b8e1eb88541f733cc2fbd39cea959a7884b24fb5294f7b0
SSDEEP

3072:3mxh3GMtTXw9g3KxQoxDyW4qbcQqpKh6MxGontqEIzft2:3mWuoK8nGoE/h2

Score

3^/10

discovery

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies registry class 16 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Media Type\Extensions\.ucf\Source Filter = "{E436EBB5-524F-11CE-9F53-0020AF0BA770}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Media Type\Extensions\.ucf\Subtype = "{F070A0E8-B213-47E4-8991-252AC82EE6A1}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{48CF8992-4161-49D6-9A9B-F1FDB3BAE74D}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{48CF8992-4161-49D6-9A9B-F1FDB3BAE74D}\CLSID = "{48CF8992-4161-49D6-9A9B-F1FDB3BAE74D}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Media Type\{E436EB83-524F-11CE-9F53-0020AF0BA770}\{F070A0E8-B213-47E4-8991-252AC82EE6A1}\0 = "0,4,,46494c45"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{48CF8992-4161-49D6-9A9B-F1FDB3BAE74D}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{48CF8992-4161-49D6-9A9B-F1FDB3BAE74D}\ = "UUSEE DeMultiplexer"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{48CF8992-4161-49D6-9A9B-F1FDB3BAE74D}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{48CF8992-4161-49D6-9A9B-F1FDB3BAE74D}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Media Type\Extensions\.ucf	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{48CF8992-4161-49D6-9A9B-F1FDB3BAE74D}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$_2_\\UFDeMux.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{48CF8992-4161-49D6-9A9B-F1FDB3BAE74D}\FriendlyName = "UUSEE DeMultiplexer"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{48CF8992-4161-49D6-9A9B-F1FDB3BAE74D}\FilterData = 02000000000060000200000000000000307069330000000000000000010000000000000000000000307479330000000060000000600000003170693308000000000000000100000000000000000000003074793300000000600000006000000000000000000000000000000000000000	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Media Type\{E436EB83-524F-11CE-9F53-0020AF0BA770}\{F070A0E8-B213-47E4-8991-252AC82EE6A1}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Media Type\{E436EB83-524F-11CE-9F53-0020AF0BA770}\{F070A0E8-B213-47E4-8991-252AC82EE6A1}\Source Filter = "{E436EBB5-524F-11CE-9F53-0020AF0BA770}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Media Type\Extensions\.ucf\Media Type = "{E436EB83-524F-11CE-9F53-0020AF0BA770}"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2648	3032	regsvr32.exe	31
PID 3032 wrote to memory of 2648	3032	regsvr32.exe	31
PID 3032 wrote to memory of 2648	3032	regsvr32.exe	31
PID 3032 wrote to memory of 2648	3032	regsvr32.exe	31
PID 3032 wrote to memory of 2648	3032	regsvr32.exe	31
PID 3032 wrote to memory of 2648	3032	regsvr32.exe	31
PID 3032 wrote to memory of 2648	3032	regsvr32.exe	31

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$_2_\UFDeMux.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\$_2_\UFDeMux.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2648

Network

MITRE ATT&CK Enterprise v15

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

Windows 7 deprecation

Loading Replay Monitor...