cb3fc239e7d29e7e2425e7fcdbfa1097d15cc3e1100a4d32cf7b20a9d2cdd5f7 | Triage

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
25-04-2024 07:58

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General

Target

wufuc/Restore_wuauserv.reg
Size

708B
MD5

99f25f3eb124c29e24c5352371c6b576
SHA1

68e203682392be44065b32ee43e8f5536133b98c
SHA256

e520b1620ae71ffae8908609e99a06d998c7e773c5179532c834d4adbcae8e5b
SHA512

c2dc2361a4dbdf5da93cb67ca9b8c8b18c52ff93b376a006ac04cc6ee9da1255687c49a5c424d4feaacecdac4299fad5caf75cd7caffdf93accb4643bbeb6736

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies security service 2 TTPs 2 IoCs

Modify Registry

Windows Service

Processes:

regedit.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Parameters	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Parameters\ServiceDll = "%systemroot%\\system32\\wuaueng.dll"	regedit.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

Processes:

regedit.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Parameters\ServiceDll = "%systemroot%\\system32\\wuaueng.dll"	regedit.exe

Runs .reg file with regedit 1 IoCs

Processes:

regedit.exe

pid process

2952 regedit.exe

C:\Windows\regedit.exe
regedit.exe "C:\Users\Admin\AppData\Local\Temp\wufuc\Restore_wuauserv.reg"
1⤵
- Modifies security service
- Sets DLL path for service in the registry
- Runs .reg file with regedit
PID:2952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Create or Modify System Process

Windows Service

Privilege Escalation

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Create or Modify System Process

Windows Service

Defense Evasion

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2952-0-0x0000000000560000-0x0000000000561000-memory.dmp

Filesize
4KB

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