9968c41b6cbe27339787af88a996b6bea795d8fd18fe9f691292cef846a3b37f

Analysis

max time kernel
95s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/11/2022, 11:33

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General

Target

9968c41b6cbe27339787af88a996b6bea795d8fd18fe9f691292cef846a3b37f.dll
Size

236KB
MD5

0ee1fc3617f9aa94fa0e6eb40ee88b80
SHA1

e9153786a847855ba0ec165b41ca5700c3f63d53
SHA256

9968c41b6cbe27339787af88a996b6bea795d8fd18fe9f691292cef846a3b37f
SHA512

3f750a62f575e15717d7fab80dc102ae0e0a48b9d04450ee90103aa0f4d0aad831ae63c92022c661800a1244942aad98d53b2bcf85a611fa695f3c3d68b6babd
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMY:Go256vS0RJAL+lHPKi40+66iwkD0f

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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\xkzpook = "{96916846-1e19-636e-2f2a-1e19e0ceb426}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1564	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96916846-1e19-636e-2f2a-1e19e0ceb426}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96916846-1e19-636e-2f2a-1e19e0ceb426}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96916846-1e19-636e-2f2a-1e19e0ceb426}\InprocServer32\ = "C:\\Windows\\SysWow64\\sfukjjf.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96916846-1e19-636e-2f2a-1e19e0ceb426}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96916846-1e19-636e-2f2a-1e19e0ceb426}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1564	rundll32.exe
1564	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1564	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1564	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 1564	2992	rundll32.exe	80
PID 2992 wrote to memory of 1564	2992	rundll32.exe	80
PID 2992 wrote to memory of 1564	2992	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9968c41b6cbe27339787af88a996b6bea795d8fd18fe9f691292cef846a3b37f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\9968c41b6cbe27339787af88a996b6bea795d8fd18fe9f691292cef846a3b37f.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:1564

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\kxmcbbx.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/1564-134-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1564-135-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download