7d2e8f5dab4586a438b2360ff399b86ed9d0c72f0324fe21d83dedc0e863304f

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2024 01:05

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General

Target

Client4.exe
Size

532KB
MD5

6d2e4a0fa025c3f4f73ec8d739112492
SHA1

211336573950a59f7e71d25ddef3be6ea74e009a
SHA256

7d2e8f5dab4586a438b2360ff399b86ed9d0c72f0324fe21d83dedc0e863304f
SHA512

894a4f0fdbad0172b64ccbeea91ae544678dd1fa924577b20fe1a7c3d21f53917618fb01464b8c8771343eb73bce49bd7a61bfc1a91ea4931bb9c1754f6d1aff
SSDEEP

6144:k2sShSigjcPMN6H0PbPTOhsfebU8tSOtVmbNMczZWBbw6dJq16HsD:7L5PMN6Hu7OqcntVmbu3JpM

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

Client4.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\System32\\userinit.exe,C:\\Windows\\WindowsDefender"	Client4.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Client4.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Windows\\Windows Defender"	Client4.exe

Drops file in Windows directory 4 IoCs

Processes:

Client4.exe

description	ioc	process
File opened for modification	C:\Windows\Windows Defender	Client4.exe
File created	C:\Windows\WindowsDefender	Client4.exe
File opened for modification	C:\Windows\WindowsDefender	Client4.exe
File created	C:\Windows\Windows Defender	Client4.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

3416 schtasks.exe

pid	process
3416	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Client4.exe

pid	process
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe
4952	Client4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Client4.exe

description pid process

Token: SeDebugPrivilege 4952 Client4.exe

description	pid	process
Token: SeDebugPrivilege	4952	Client4.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

Client4.exeCMD.exe

description	pid	process	target process
PID 4952 wrote to memory of 2528	4952	Client4.exe	CMD.exe
PID 4952 wrote to memory of 2528	4952	Client4.exe	CMD.exe
PID 2528 wrote to memory of 3416	2528	CMD.exe	schtasks.exe
PID 2528 wrote to memory of 3416	2528	CMD.exe	schtasks.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Client4.exe
"C:\Users\Admin\AppData\Local\Temp\Client4.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Windows\SYSTEM32\CMD.exe
  "CMD" /C SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "System" /tr "C:\Windows\WindowsDefender" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2528
- - C:\Windows\system32\schtasks.exe
    SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "System" /tr "C:\Windows\WindowsDefender"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4952-0-0x00007FF9184C3000-0x00007FF9184C5000-memory.dmp

Filesize
8KB

Download
memory/4952-1-0x0000000000800000-0x000000000088C000-memory.dmp

Filesize
560KB

Download
memory/4952-2-0x00007FF9184C3000-0x00007FF9184C5000-memory.dmp

Filesize
8KB

Download
memory/4952-56-0x00007FF9184C0000-0x00007FF918F81000-memory.dmp

Filesize
10.8MB

Download
memory/4952-112-0x00007FF9184C0000-0x00007FF918F81000-memory.dmp

Filesize
10.8MB

Download