23a973803319125f2ddb44255a9c43fa6fa5a1cf155dbf589487baeb85c0d223

Analysis

max time kernel
120s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
15/07/2024, 01:15

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General

Target

550d2c292fd1c231f902c31571e507b0N.exe
Size

156KB
MD5

550d2c292fd1c231f902c31571e507b0
SHA1

daf17108fb77c91874df6b19aafc875e0f7e14ec
SHA256

23a973803319125f2ddb44255a9c43fa6fa5a1cf155dbf589487baeb85c0d223
SHA512

e1f20ec423a22dd6c086e07e89d9375ac94183eefa70081e71d07171ddb1b0c6f7eafca785441cb597a59ea791127befc2b962920dd6e671871647bff695cce0
SSDEEP

3072:QkvF+OOUYjo0i2JdvIArAVMBWfvgfJYraeL/qHQl:TF+Fo2JxeMw3g42HQl

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\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\apppatch\\svchost.exe,"	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3188	svchost.exe

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\a1dc2809 = "C:\\Windows\\apppatch\\svchost.exe"	550d2c292fd1c231f902c31571e507b0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\a1dc2809 = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\svchost.exe	550d2c292fd1c231f902c31571e507b0N.exe
File opened for modification	C:\Windows\apppatch\svchost.exe	550d2c292fd1c231f902c31571e507b0N.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe
3188	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
864	550d2c292fd1c231f902c31571e507b0N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 864 wrote to memory of 3188	864	550d2c292fd1c231f902c31571e507b0N.exe	84
PID 864 wrote to memory of 3188	864	550d2c292fd1c231f902c31571e507b0N.exe	84
PID 864 wrote to memory of 3188	864	550d2c292fd1c231f902c31571e507b0N.exe	84

C:\Users\Admin\AppData\Local\Temp\550d2c292fd1c231f902c31571e507b0N.exe
"C:\Users\Admin\AppData\Local\Temp\550d2c292fd1c231f902c31571e507b0N.exe"
1⤵
- Modifies WinLogon
- Drops file in Windows directory
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:864
- C:\Windows\apppatch\svchost.exe
  "C:\Windows\apppatch\svchost.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Modifies WinLogon
  - Suspicious behavior: EnumeratesProcesses
  PID:3188

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

C:\Windows\apppatch\svchost.exe

Filesize
156KB

MD5
0687659340b567a311cc7aee844d9975

SHA1
06da21b4bac940aa3c7c4167ecc38dc2221e124f

SHA256
504b9369f9b08037ab2c591a7a769ddd653764280020dc92ca440f6ec249b5bd

SHA512
eea06734a6b289b607670bd59fd833770ada99ec3783da26de6bb974e7c62550491bb898f68446a0328f20ab9406f8d248ec9a659185e8ceaa381b5b779215d3

Download Submit
memory/864-9-0x0000000000240000-0x0000000000270000-memory.dmp

Filesize
192KB

Download
memory/3188-10-0x0000000002F20000-0x0000000002F66000-memory.dmp

Filesize
280KB

Download
memory/3188-11-0x0000000002FB0000-0x0000000002FFA000-memory.dmp

Filesize
296KB

Download
memory/3188-15-0x0000000002FB0000-0x0000000002FFA000-memory.dmp

Filesize
296KB

Download
memory/3188-13-0x0000000002FB0000-0x0000000002FFA000-memory.dmp

Filesize
296KB

Download
memory/3188-18-0x0000000002FB0000-0x0000000002FFA000-memory.dmp

Filesize
296KB

Download
memory/3188-19-0x0000000002FB0000-0x0000000002FFA000-memory.dmp

Filesize
296KB

Download