25ee8fff4e91d9742d4e2656b2f7b87e9477c352cfcda7e7af42b490bbd01505

Analysis

max time kernel
148s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/12/2023, 14:33

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

25f8953a733a3d5bf8a2d56b12969122.dll
Size

236KB
MD5

25f8953a733a3d5bf8a2d56b12969122
SHA1

210143e5660a2d5e33a31d6023d3d10c141fa395
SHA256

25ee8fff4e91d9742d4e2656b2f7b87e9477c352cfcda7e7af42b490bbd01505
SHA512

790186f36f508e7cf8592375d5dc297dfeaee58dad0931d9869cefb6a312bc17b036c5560e16e7349bf7e873fa623b2bedbbcc1ea9ed8de2826855fb53f3c01e
SSDEEP

3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIx:+Qj9U3jwO3rt5a

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\ucpbn = "{02bf97aa-8a37-df8c-9b48-8a371f225baf}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2872	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\hpcoa.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\hpcoa.dll	rundll32.exe
File created	C:\Windows\SysWOW64\pxkwi.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\pxkwi.dll	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{02bf97aa-8a37-df8c-9b48-8a371f225baf}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{02bf97aa-8a37-df8c-9b48-8a371f225baf}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{02bf97aa-8a37-df8c-9b48-8a371f225baf}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{02bf97aa-8a37-df8c-9b48-8a371f225baf}\InprocServer32\ = "C:\\Windows\\SysWow64\\pxkwi.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{02bf97aa-8a37-df8c-9b48-8a371f225baf}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2872	rundll32.exe
2872	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2872	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2872	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 620 wrote to memory of 2872	620	rundll32.exe	16
PID 620 wrote to memory of 2872	620	rundll32.exe	16
PID 620 wrote to memory of 2872	620	rundll32.exe	16

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\25f8953a733a3d5bf8a2d56b12969122.dll,#1
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2872

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\25f8953a733a3d5bf8a2d56b12969122.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:620

Network

MITRE ATT&CK Enterprise v15

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2872-7-0x0000000076640000-0x00000000766BA000-memory.dmp

Filesize
488KB

Download
memory/2872-6-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2872-11-0x0000000076640000-0x00000000766BA000-memory.dmp

Filesize
488KB

Download
memory/2872-10-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download