732ba8ceafdaa0e750f3fe581f04660853a4c3641a66f4bdd2411520618e6b8e

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 13:08

Sharing

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General

Target

9bc16be38ebc8531d6d170bf1c8814a0.exe
Size

48KB
MD5

9bc16be38ebc8531d6d170bf1c8814a0
SHA1

d4b316b46040edcccd9fea1530ecca7bc21c2f5c
SHA256

732ba8ceafdaa0e750f3fe581f04660853a4c3641a66f4bdd2411520618e6b8e
SHA512

f8f64ea58d2ed8762a6ebc30a445ccbf0586dd3579edcb6bc3af9edf7d5eb5bf0787bfd9f2ffbc9339cd4351aa4f1bb85cb53287f5629ffd74615655a1e1bb52
SSDEEP

768:EKdjVYH2LdFu1t/Vt8yDZsYFfBvo+V+lDhHiI:EKdjVYH+Fuz/P8y1pBv3+lBiI

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "C:\\Windows\\system32\\ntos.exe,"	9bc16be38ebc8531d6d170bf1c8814a0.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ntos.exe	9bc16be38ebc8531d6d170bf1c8814a0.exe
File created	C:\Windows\SysWOW64\ntos.exe	9bc16be38ebc8531d6d170bf1c8814a0.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4820	9bc16be38ebc8531d6d170bf1c8814a0.exe
4820	9bc16be38ebc8531d6d170bf1c8814a0.exe
4820	9bc16be38ebc8531d6d170bf1c8814a0.exe
4820	9bc16be38ebc8531d6d170bf1c8814a0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3
PID 4820 wrote to memory of 616	4820	9bc16be38ebc8531d6d170bf1c8814a0.exe	3

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

C:\Users\Admin\AppData\Local\Temp\9bc16be38ebc8531d6d170bf1c8814a0.exe
"C:\Users\Admin\AppData\Local\Temp\9bc16be38ebc8531d6d170bf1c8814a0.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/616-11-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/616-16-0x0000000023190000-0x00000000231B5000-memory.dmp

Filesize
148KB

Download
memory/616-21-0x00000000231C0000-0x00000000231E5000-memory.dmp

Filesize
148KB

Download
memory/616-26-0x00000000231F0000-0x0000000023215000-memory.dmp

Filesize
148KB

Download
memory/616-31-0x0000000023220000-0x0000000023245000-memory.dmp

Filesize
148KB

Download
memory/616-36-0x0000000023250000-0x0000000023275000-memory.dmp

Filesize
148KB

Download
memory/616-41-0x0000000023280000-0x00000000232A5000-memory.dmp

Filesize
148KB

Download
memory/616-46-0x00000000232B0000-0x00000000232D5000-memory.dmp

Filesize
148KB

Download
memory/616-51-0x00000000232E0000-0x0000000023305000-memory.dmp

Filesize
148KB

Download
memory/616-56-0x0000000023310000-0x0000000023335000-memory.dmp

Filesize
148KB

Download
memory/616-61-0x0000000023340000-0x0000000023365000-memory.dmp

Filesize
148KB

Download
memory/616-66-0x0000000023370000-0x0000000023395000-memory.dmp

Filesize
148KB

Download
memory/616-71-0x00000000233A0000-0x00000000233C5000-memory.dmp

Filesize
148KB

Download
memory/616-76-0x00000000233D0000-0x00000000233F5000-memory.dmp

Filesize
148KB

Download
memory/616-81-0x0000000023400000-0x0000000023425000-memory.dmp

Filesize
148KB

Download
memory/616-86-0x0000000023430000-0x0000000023455000-memory.dmp

Filesize
148KB

Download
memory/616-91-0x0000000023460000-0x0000000023485000-memory.dmp

Filesize
148KB

Download
memory/616-96-0x0000000023490000-0x00000000234B5000-memory.dmp

Filesize
148KB

Download
memory/616-101-0x00000000234C0000-0x00000000234E5000-memory.dmp

Filesize
148KB

Download
memory/616-106-0x00000000234F0000-0x0000000023515000-memory.dmp

Filesize
148KB

Download
memory/616-111-0x0000000023520000-0x0000000023545000-memory.dmp

Filesize
148KB

Download
memory/616-116-0x0000000023550000-0x0000000023575000-memory.dmp

Filesize
148KB

Download
memory/616-121-0x0000000023580000-0x00000000235A5000-memory.dmp

Filesize
148KB

Download
memory/616-126-0x00000000235B0000-0x00000000235D5000-memory.dmp

Filesize
148KB

Download
memory/616-131-0x00000000235E0000-0x0000000023605000-memory.dmp

Filesize
148KB

Download
memory/616-136-0x0000000023610000-0x0000000023635000-memory.dmp

Filesize
148KB

Download
memory/616-141-0x0000000023640000-0x0000000023665000-memory.dmp

Filesize
148KB

Download
memory/616-146-0x0000000023670000-0x0000000023695000-memory.dmp

Filesize
148KB

Download
memory/616-151-0x00000000236A0000-0x00000000236C5000-memory.dmp

Filesize
148KB

Download
memory/616-156-0x00000000236D0000-0x00000000236F5000-memory.dmp

Filesize
148KB

Download
memory/616-161-0x0000000023700000-0x0000000023725000-memory.dmp

Filesize
148KB

Download
memory/616-166-0x0000000023730000-0x0000000023755000-memory.dmp

Filesize
148KB

Download
memory/616-171-0x0000000023760000-0x0000000023785000-memory.dmp

Filesize
148KB

Download
memory/616-176-0x0000000023790000-0x00000000237B5000-memory.dmp

Filesize
148KB

Download
memory/616-181-0x00000000237C0000-0x00000000237E5000-memory.dmp

Filesize
148KB

Download
memory/616-186-0x00000000237F0000-0x0000000023815000-memory.dmp

Filesize
148KB

Download
memory/616-191-0x0000000023820000-0x0000000023845000-memory.dmp

Filesize
148KB

Download
memory/616-196-0x0000000023850000-0x0000000023875000-memory.dmp

Filesize
148KB

Download
memory/616-201-0x0000000023880000-0x00000000238A5000-memory.dmp

Filesize
148KB

Download
memory/616-206-0x00000000238B0000-0x00000000238D5000-memory.dmp

Filesize
148KB

Download
memory/616-211-0x00000000238E0000-0x0000000023905000-memory.dmp

Filesize
148KB

Download
memory/616-216-0x0000000023910000-0x0000000023935000-memory.dmp

Filesize
148KB

Download
memory/616-221-0x0000000023940000-0x0000000023965000-memory.dmp

Filesize
148KB

Download
memory/616-226-0x0000000023970000-0x0000000023995000-memory.dmp

Filesize
148KB

Download
memory/616-231-0x00000000239A0000-0x00000000239C5000-memory.dmp

Filesize
148KB

Download
memory/616-236-0x00000000239D0000-0x00000000239F5000-memory.dmp

Filesize
148KB

Download
memory/616-241-0x0000000023A00000-0x0000000023A25000-memory.dmp

Filesize
148KB

Download
memory/616-246-0x0000000023A30000-0x0000000023A55000-memory.dmp

Filesize
148KB

Download
memory/616-251-0x0000000023A60000-0x0000000023A85000-memory.dmp

Filesize
148KB

Download
memory/616-256-0x0000000023A90000-0x0000000023AB5000-memory.dmp

Filesize
148KB

Download
memory/616-261-0x0000000023AC0000-0x0000000023AE5000-memory.dmp

Filesize
148KB

Download
memory/616-266-0x0000000023AF0000-0x0000000023B15000-memory.dmp

Filesize
148KB

Download
memory/616-271-0x0000000023B20000-0x0000000023B45000-memory.dmp

Filesize
148KB

Download
memory/616-276-0x0000000023B50000-0x0000000023B75000-memory.dmp

Filesize
148KB

Download
memory/616-281-0x0000000023B80000-0x0000000023BA5000-memory.dmp

Filesize
148KB

Download
memory/616-286-0x0000000023BB0000-0x0000000023BD5000-memory.dmp

Filesize
148KB

Download
memory/616-291-0x0000000023BE0000-0x0000000023C05000-memory.dmp

Filesize
148KB

Download
memory/616-296-0x0000000023C10000-0x0000000023C35000-memory.dmp

Filesize
148KB

Download
memory/616-301-0x0000000023C40000-0x0000000023C65000-memory.dmp

Filesize
148KB

Download
memory/616-306-0x0000000023C70000-0x0000000023C95000-memory.dmp

Filesize
148KB

Download
memory/616-311-0x0000000023CA0000-0x0000000023CC5000-memory.dmp

Filesize
148KB

Download
memory/616-316-0x0000000023CD0000-0x0000000023CF5000-memory.dmp

Filesize
148KB

Download
memory/616-321-0x0000000023D00000-0x0000000023D25000-memory.dmp

Filesize
148KB

Download
memory/4820-0-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4820-1-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4820-2-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download