e6fea71acb4cdcc7e0b70bfca9159a35bbdf1719009db277a38b43b43c2fcfd4

Analysis

max time kernel
162s
max time network
178s
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 15:56

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General

Target

0488c0003a0c7506e98624b4422db3a5.dll
Size

236KB
MD5

0488c0003a0c7506e98624b4422db3a5
SHA1

f4d7446788d5e6e7e5876d5a883fabf311647874
SHA256

e6fea71acb4cdcc7e0b70bfca9159a35bbdf1719009db277a38b43b43c2fcfd4
SHA512

d2d823a4bb34bc7608f2fa481dfb14a0f4ac010fbcbaebc95cb25c478325e84021033e262b1a61c2c8c110b0552f1c37a4da335533259239a8563552923c707e
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvM5:Go256vS0RJAL+lHPKi40+66iwkD0y

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\het = "{72d6003d-fa5e-4fa3-0b6f-fa5e88b54f6a}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
3464	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72d6003d-fa5e-4fa3-0b6f-fa5e88b54f6a}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72d6003d-fa5e-4fa3-0b6f-fa5e88b54f6a}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72d6003d-fa5e-4fa3-0b6f-fa5e88b54f6a}\InprocServer32\ = "C:\\Windows\\SysWow64\\czo.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72d6003d-fa5e-4fa3-0b6f-fa5e88b54f6a}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{72d6003d-fa5e-4fa3-0b6f-fa5e88b54f6a}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3464	rundll32.exe
3464	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3464	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3464	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 3464	1628	rundll32.exe	90
PID 1628 wrote to memory of 3464	1628	rundll32.exe	90
PID 1628 wrote to memory of 3464	1628	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0488c0003a0c7506e98624b4422db3a5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0488c0003a0c7506e98624b4422db3a5.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:3464

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

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Downloads

C:\Windows\SysWOW64\urg.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/3464-0-0x00000000011F0000-0x0000000001234000-memory.dmp

Filesize
272KB

Download
memory/3464-1-0x00000000011F0000-0x0000000001234000-memory.dmp

Filesize
272KB

Download
memory/3464-8-0x0000000076290000-0x000000007630A000-memory.dmp

Filesize
488KB

Download
memory/3464-9-0x0000000076290000-0x000000007630A000-memory.dmp

Filesize
488KB

Download
memory/3464-12-0x00000000011F0000-0x0000000001234000-memory.dmp

Filesize
272KB

Download
memory/3464-13-0x0000000076290000-0x000000007630A000-memory.dmp

Filesize
488KB

Download