51a129086b973f6bae1bed13d9baf7796be82f59e407fb5a59d3936a31830690

Analysis

max time kernel
144s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2023 10:05

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

15f4b6ff3ff656fbe205618a25c5fc3c.dll
Size

236KB
MD5

15f4b6ff3ff656fbe205618a25c5fc3c
SHA1

d0c443afb91af5cd8bbd4bcebc1c9652f6622be9
SHA256

51a129086b973f6bae1bed13d9baf7796be82f59e407fb5a59d3936a31830690
SHA512

dcb9b6fbf5e2202592c30c4286eee51a5f03f85be886860398411c63b7cecd153144236d568411b4898786d0ce86106569bedfaa47959c1bd19867dfbde55392
SSDEEP

3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIT:+Qj9U3jwO3rt5I

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\mvmhfpmcv = "{8b8fbb6e-0307-585c-1418-030733e69b76}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4064	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8b8fbb6e-0307-585c-1418-030733e69b76}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8b8fbb6e-0307-585c-1418-030733e69b76}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8b8fbb6e-0307-585c-1418-030733e69b76}\InprocServer32\ = "C:\\Windows\\SysWow64\\hqhcakhxq.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8b8fbb6e-0307-585c-1418-030733e69b76}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8b8fbb6e-0307-585c-1418-030733e69b76}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4064	rundll32.exe
4064	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4064	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4064	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5204 wrote to memory of 4064	5204	rundll32.exe	43
PID 5204 wrote to memory of 4064	5204	rundll32.exe	43
PID 5204 wrote to memory of 4064	5204	rundll32.exe	43

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\15f4b6ff3ff656fbe205618a25c5fc3c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5204
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\15f4b6ff3ff656fbe205618a25c5fc3c.dll,#1
  2⤵
  - 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:4064

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

C:\Windows\SysWOW64\zizusczpi.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/4064-0-0x0000000000BF0000-0x0000000000C34000-memory.dmp

Filesize
272KB

Download
memory/4064-7-0x0000000000BF0000-0x0000000000C34000-memory.dmp

Filesize
272KB

Download
memory/4064-10-0x00000000753E0000-0x000000007545A000-memory.dmp

Filesize
488KB

Download
memory/4064-11-0x0000000000BF0000-0x0000000000C34000-memory.dmp

Filesize
272KB

Download
memory/4064-12-0x00000000753E0000-0x000000007545A000-memory.dmp

Filesize
488KB

Download