e0d43c155c12f350da7c65f579035dd9a32a0cff8c91ab24f7afebd705d1a1b7

Analysis

max time kernel
146s
max time network
157s
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 14:30

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General

Target

01068575912747cf298399de21ab3bd5.dll
Size

236KB
MD5

01068575912747cf298399de21ab3bd5
SHA1

a7104c3cfad2f47bb542f21a97bb1c86f24dabd2
SHA256

e0d43c155c12f350da7c65f579035dd9a32a0cff8c91ab24f7afebd705d1a1b7
SHA512

bac3c672a58889f38be030a77b5cd3e36e6e8d6ba817bf440d0774cc2a5ed34c030906e73af3f3bb7035c0b5673bcf7ccc383fa1eb102c86fb3e5ff34959c136
SSDEEP

3072:3F24fliN+7XlmZKxbLYH1rhAwHL5K2W5QVgxwkFp:3F24flic7X8ZibLYHFhAkKZYgnp

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\jyufljxvm = "{daa931d9-5221-a776-6332-5221b951a640}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1832	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{daa931d9-5221-a776-6332-5221b951a640}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{daa931d9-5221-a776-6332-5221b951a640}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{daa931d9-5221-a776-6332-5221b951a640}\InprocServer32\ = "C:\\Windows\\SysWow64\\etpagesqh.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{daa931d9-5221-a776-6332-5221b951a640}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{daa931d9-5221-a776-6332-5221b951a640}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1832	rundll32.exe
1832	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1832	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1832	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4420 wrote to memory of 1832	4420	rundll32.exe	87
PID 4420 wrote to memory of 1832	4420	rundll32.exe	87
PID 4420 wrote to memory of 1832	4420	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\01068575912747cf298399de21ab3bd5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4420
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\01068575912747cf298399de21ab3bd5.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:1832

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\wlhsywkiz.dll

Filesize
375KB

MD5
9663068b3b4340648852f0ab882669c7

SHA1
7f4cdb98d75a3bf401743765019f9c16b5d75ad1

SHA256
35953c31da8112b3841225f47ee0189812a3d1252cc20fa8dc1e816f2ccd912a

SHA512
98f637f5ec5faf9b5498abe74a898ef4d2fd6835b07a689abf1921f57445e02e9dd15add68ee1077bf1307b39d918f85fc21da6e9b8da00f9a390d6782b0f18d

Download Submit
C:\Windows\SysWOW64\wlhsywkiz.dll

Filesize
420KB

MD5
98fb0260e09882c7cc664dcb1ed7e840

SHA1
56b901f920a29da987f90e4cf22a300763c7daf5

SHA256
13e282f1b3bea5add715a0eeaec69729d1a7235ddaa650dd165d085ded7f31bd

SHA512
4f02be34cd1bdcd470b9acb3e72f536146c5adbbd229ca214d039701eab00428fcb77c1156d0e80144e08987e0262501b87211c41739bef1d1348bef3ec6e55a

Download Submit
memory/1832-0-0x00000000008B0000-0x00000000008F4000-memory.dmp

Filesize
272KB

Download
memory/1832-1-0x00000000008B0000-0x00000000008F4000-memory.dmp

Filesize
272KB

Download
memory/1832-8-0x00000000762C0000-0x000000007633A000-memory.dmp

Filesize
488KB

Download
memory/1832-11-0x00000000008B0000-0x00000000008F4000-memory.dmp

Filesize
272KB

Download
memory/1832-12-0x00000000762C0000-0x000000007633A000-memory.dmp

Filesize
488KB

Download