68b084055762b03a39356cff421cacf7923915a39416ac7aa9be80d5ec7eb5ec

Analysis

max time kernel
69s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
28/10/2022, 18:05

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

68b084055762b03a39356cff421cacf7923915a39416ac7aa9be80d5ec7eb5ec.dll
Size

236KB
MD5

0bb0e286c6f9aaebe72c385918183c22
SHA1

b9d2c2bb9dea9669dfdf093be341d082cd1ddc1b
SHA256

68b084055762b03a39356cff421cacf7923915a39416ac7aa9be80d5ec7eb5ec
SHA512

1f89ee8e2d313a62da115b59f8e67ca974d696358a3fcba240a70dfce69b21be45a734095390ac84c086dc5c809fbc67f20e4b544e5b70d7db03f2427fbb2b14
SSDEEP

3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIT:+Qj9U3jwO3rt5c

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\efkvdmk = "{c9a93e85-4121-9676-5232-4121b60dbe93}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4644	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{c9a93e85-4121-9676-5232-4121b60dbe93}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{c9a93e85-4121-9676-5232-4121b60dbe93}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{c9a93e85-4121-9676-5232-4121b60dbe93}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{c9a93e85-4121-9676-5232-4121b60dbe93}\InprocServer32\ = "C:\\Windows\\SysWow64\\zafqyhf.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{c9a93e85-4121-9676-5232-4121b60dbe93}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4644	rundll32.exe
4644	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4644	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4644	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4356 wrote to memory of 4644	4356	rundll32.exe	82
PID 4356 wrote to memory of 4644	4356	rundll32.exe	82
PID 4356 wrote to memory of 4644	4356	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\68b084055762b03a39356cff421cacf7923915a39416ac7aa9be80d5ec7eb5ec.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4356
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\68b084055762b03a39356cff421cacf7923915a39416ac7aa9be80d5ec7eb5ec.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:4644

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\rsxiqzx.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/4644-134-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/4644-135-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download