b1a0ec3b1b9900a2bd1b3ae8b7cccb6c3097d267c61720cedcb2ca0fc200d00f

Analysis

max time kernel
120s
max time network
113s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
27-07-2024 07:08

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General

Target

a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe
Size

240KB
MD5

a5c9c7d6ce149ce7c0fcae5fb91ba650
SHA1

6d9423a0906cea9ad83fbcfdb3a9001c8e3ba616
SHA256

b1a0ec3b1b9900a2bd1b3ae8b7cccb6c3097d267c61720cedcb2ca0fc200d00f
SHA512

79a6d9ee797babbddda2329b763c07f1bf52e6a89b4cd18433bab8b55fc91cdcadd3780a8555d3165dba2fdce6dc07f4060c26ce2cc41faf24d78cd75640f07a
SSDEEP

6144:euOYYecObhLvkiL2XOdldJNifl4wwXCAjVrUEzvbeTIu//:9K1y9hrTiN4nBRrUS6Tf/

Score

10^/10

discovery 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
2844	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\3acec3c6 = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\3acec3c6 = "C:\\Windows\\apppatch\\svchost.exe"	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\svchost.exe	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe
File opened for modification	C:\Windows\apppatch\svchost.exe	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2844	svchost.exe
2844	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4844	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 2844	4844	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe	87
PID 4844 wrote to memory of 2844	4844	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe	87
PID 4844 wrote to memory of 2844	4844	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe	87

C:\Users\Admin\AppData\Local\Temp\a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe
"C:\Users\Admin\AppData\Local\Temp\a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe"
1⤵
- Modifies WinLogon
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Windows\apppatch\svchost.exe
  "C:\Windows\apppatch\svchost.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Modifies WinLogon
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2844

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\apppatch\svchost.exe

Filesize
240KB

MD5
a479ffa87119c5577d84e6cdd5023825

SHA1
faebb84374d2da1f8211a21769d73a9c245fc40f

SHA256
e30a42fb1e4f6945f49eea6d3c7a51b5533cf69fefca62fe871b723e886ab85e

SHA512
81be30f0a31a5e80d501a62d76093f74158f85471fd82f1fdcaa403b7f78f9812d2a7e34449e762756cfaae34a8e05385408e22fb12c1f4f937da70cb214b1ea

Download Submit
memory/2844-66-0x0000000003CA0000-0x0000000003CA1000-memory.dmp

Filesize
4KB

Download
memory/2844-12-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/2844-34-0x0000000003BE0000-0x0000000003BE1000-memory.dmp

Filesize
4KB

Download
memory/2844-54-0x0000000003C60000-0x0000000003C61000-memory.dmp

Filesize
4KB

Download
memory/2844-38-0x0000000003BE0000-0x0000000003BE1000-memory.dmp

Filesize
4KB

Download
memory/2844-40-0x0000000003C00000-0x0000000003C01000-memory.dmp

Filesize
4KB

Download
memory/2844-41-0x0000000003C10000-0x0000000003C11000-memory.dmp

Filesize
4KB

Download
memory/2844-16-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/2844-17-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/2844-18-0x0000000002A00000-0x0000000002A8C000-memory.dmp

Filesize
560KB

Download
memory/2844-19-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/2844-20-0x0000000002B90000-0x0000000002C2B000-memory.dmp

Filesize
620KB

Download
memory/2844-25-0x0000000002B90000-0x0000000002C2B000-memory.dmp

Filesize
620KB

Download
memory/2844-22-0x0000000002B90000-0x0000000002C2B000-memory.dmp

Filesize
620KB

Download
memory/2844-33-0x0000000003BD0000-0x0000000003BD1000-memory.dmp

Filesize
4KB

Download
memory/2844-65-0x0000000003CB0000-0x0000000003CB1000-memory.dmp

Filesize
4KB

Download
memory/2844-30-0x0000000003BC0000-0x0000000003BC1000-memory.dmp

Filesize
4KB

Download
memory/2844-29-0x0000000003BC0000-0x0000000003BC1000-memory.dmp

Filesize
4KB

Download
memory/2844-27-0x0000000003BB0000-0x0000000003BB1000-memory.dmp

Filesize
4KB

Download
memory/2844-44-0x0000000003C20000-0x0000000003C21000-memory.dmp

Filesize
4KB

Download
memory/2844-37-0x0000000003BF0000-0x0000000003BF1000-memory.dmp

Filesize
4KB

Download
memory/2844-45-0x0000000003C10000-0x0000000003C11000-memory.dmp

Filesize
4KB

Download
memory/2844-31-0x0000000003BB0000-0x0000000003BB1000-memory.dmp

Filesize
4KB

Download
memory/2844-69-0x0000000003CD0000-0x0000000003CD1000-memory.dmp

Filesize
4KB

Download
memory/2844-79-0x0000000003D10000-0x0000000003D11000-memory.dmp

Filesize
4KB

Download
memory/2844-75-0x0000000003CF0000-0x0000000003CF1000-memory.dmp

Filesize
4KB

Download
memory/2844-73-0x0000000003CD0000-0x0000000003CD1000-memory.dmp

Filesize
4KB

Download
memory/2844-72-0x0000000003CE0000-0x0000000003CE1000-memory.dmp

Filesize
4KB

Download
memory/2844-68-0x0000000003CC0000-0x0000000003CC1000-memory.dmp

Filesize
4KB

Download
memory/2844-62-0x0000000003CA0000-0x0000000003CA1000-memory.dmp

Filesize
4KB

Download
memory/2844-61-0x0000000003C90000-0x0000000003C91000-memory.dmp

Filesize
4KB

Download
memory/2844-59-0x0000000003C70000-0x0000000003C71000-memory.dmp

Filesize
4KB

Download
memory/2844-58-0x0000000003C80000-0x0000000003C81000-memory.dmp

Filesize
4KB

Download
memory/2844-55-0x0000000003C70000-0x0000000003C71000-memory.dmp

Filesize
4KB

Download
memory/2844-52-0x0000000003C40000-0x0000000003C41000-memory.dmp

Filesize
4KB

Download
memory/2844-51-0x0000000003C50000-0x0000000003C51000-memory.dmp

Filesize
4KB

Download
memory/2844-47-0x0000000003C30000-0x0000000003C31000-memory.dmp

Filesize
4KB

Download
memory/4844-2-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4844-14-0x00000000021C0000-0x0000000002225000-memory.dmp

Filesize
404KB

Download
memory/4844-15-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/4844-13-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/4844-0-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/4844-1-0x00000000021C0000-0x0000000002225000-memory.dmp

Filesize
404KB

Download