4c0b5ce751028982f6a51ef99bc1b603d16cefa6ae274d952f9f99d2ea5ff2df

Analysis

max time kernel
162s
max time network
193s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
29/11/2022, 09:16

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General

Target

4c0b5ce751028982f6a51ef99bc1b603d16cefa6ae274d952f9f99d2ea5ff2df.dll
Size

230KB
MD5

1f07e157ddd77f922a3521c06752d830
SHA1

c67add0db91415e475b3562b18b46a0709187a0a
SHA256

4c0b5ce751028982f6a51ef99bc1b603d16cefa6ae274d952f9f99d2ea5ff2df
SHA512

8d4859f9d9a9bc02fe8ef43e4c387988ad4aa036edb478ae065712125c3b8278e655422bcf37f07f144d5acff62e53dcae06a9bc806b8da00e342a18e84d8097
SSDEEP

1536:QiaVnouSu4CU7XZfjPcj/NMC2PhBRX99m+g9Vxm5dZZpQCLWGUGowkTEI/B:VioFCUrJcj/uC2b9+x0Jq8uwkQIZ

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

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\dmj = "{9235ccba-1abd-6f02-2bce-1abd4432ad9b}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4160	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9235ccba-1abd-6f02-2bce-1abd4432ad9b}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9235ccba-1abd-6f02-2bce-1abd4432ad9b}\InprocServer32\ = "C:\\Windows\\SysWow64\\yhe.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9235ccba-1abd-6f02-2bce-1abd4432ad9b}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9235ccba-1abd-6f02-2bce-1abd4432ad9b}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9235ccba-1abd-6f02-2bce-1abd4432ad9b}\	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4160	rundll32.exe
4160	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4160	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4160	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 792 wrote to memory of 4160	792	rundll32.exe	82
PID 792 wrote to memory of 4160	792	rundll32.exe	82
PID 792 wrote to memory of 4160	792	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c0b5ce751028982f6a51ef99bc1b603d16cefa6ae274d952f9f99d2ea5ff2df.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:792
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c0b5ce751028982f6a51ef99bc1b603d16cefa6ae274d952f9f99d2ea5ff2df.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:4160

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\qzw.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/4160-133-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4160-135-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download