e61e36def6db1ec3d6d96b190165f2871e1ba5062b4f91e5b5aefefe7cd2258a

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2023 14:27

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General

Target

00d057522d4ce478024eb87893b5087a.dll
Size

236KB
MD5

00d057522d4ce478024eb87893b5087a
SHA1

bd98a0ac8a896d36f4f6e8521074a96c139908fa
SHA256

e61e36def6db1ec3d6d96b190165f2871e1ba5062b4f91e5b5aefefe7cd2258a
SHA512

93c5bf58321118b6c32ec1db5b24dffe12bd1b7ae4a0504c75915e3755655b678ad0aef13418a12888ed013784d0712ca24ca1d23a35db39e4caf101a6661594
SSDEEP

3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIA:+Qj9U3jwO3rt5/

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\iilob = "{8c3c7377-04b4-5909-15c5-04b4fbff693e}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1628	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8c3c7377-04b4-5909-15c5-04b4fbff693e}\InprocServer32\ = "C:\\Windows\\SysWow64\\ddgjw.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8c3c7377-04b4-5909-15c5-04b4fbff693e}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8c3c7377-04b4-5909-15c5-04b4fbff693e}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8c3c7377-04b4-5909-15c5-04b4fbff693e}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8c3c7377-04b4-5909-15c5-04b4fbff693e}\InprocServer32	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1628	rundll32.exe
1628	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1628	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1628	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4728 wrote to memory of 1628	4728	rundll32.exe	84
PID 4728 wrote to memory of 1628	4728	rundll32.exe	84
PID 4728 wrote to memory of 1628	4728	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\00d057522d4ce478024eb87893b5087a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4728
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\00d057522d4ce478024eb87893b5087a.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:1628

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

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Downloads

C:\Windows\SysWOW64\vvybo.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/1628-1-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1628-9-0x0000000075C20000-0x0000000075C9A000-memory.dmp

Filesize
488KB

Download
memory/1628-10-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1628-11-0x0000000075C20000-0x0000000075C9A000-memory.dmp

Filesize
488KB

Download