b1a0ec3b1b9900a2bd1b3ae8b7cccb6c3097d267c61720cedcb2ca0fc200d00f

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-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
2544	svchost.exe

Loads dropped DLL 2 IoCs

pid	Process
2120	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe
2120	a5c9c7d6ce149ce7c0fcae5fb91ba650N.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\ded9f96e = "C:\\Windows\\apppatch\\svchost.exe"	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\ded9f96e = "C:\\Windows\\apppatch\\svchost.exe"	svchost.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2544	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2120	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2544	2120	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe	30
PID 2120 wrote to memory of 2544	2120	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe	30
PID 2120 wrote to memory of 2544	2120	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe	30
PID 2120 wrote to memory of 2544	2120	a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe	30

C:\Users\Admin\AppData\Local\Temp\a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe
"C:\Users\Admin\AppData\Local\Temp\a5c9c7d6ce149ce7c0fcae5fb91ba650N.exe"
1⤵
- Loads dropped DLL
- Modifies WinLogon
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2120
- 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:2544

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

\Windows\AppPatch\svchost.exe

Filesize
240KB

MD5
5f7960800850435d05d9265b2d4bf2ff

SHA1
0c349d22432909efe5adb74b593fd78188cb3baf

SHA256
389160935f0c52806150f278fc04fd51ead66bcf652d43e64c3ef92f651af5a2

SHA512
0649f95375afb8b62d5c7a2a21c56669db641f33b626ec7dab5583cf68a1458f6badee3222cba0ab46cb13b39a8d7b4d06ee510869ba8c065ef593cc45f65939

Download Submit
memory/2120-16-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/2120-1-0x0000000000240000-0x00000000002A5000-memory.dmp

Filesize
404KB

Download
memory/2120-2-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/2120-19-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/2120-0-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/2120-18-0x0000000000240000-0x00000000002A5000-memory.dmp

Filesize
404KB

Download
memory/2544-62-0x0000000003EA0000-0x0000000003EA1000-memory.dmp

Filesize
4KB

Download
memory/2544-55-0x00000000031A0000-0x00000000031A1000-memory.dmp

Filesize
4KB

Download
memory/2544-21-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/2544-22-0x0000000000480000-0x000000000050C000-memory.dmp

Filesize
560KB

Download
memory/2544-24-0x0000000000480000-0x000000000050C000-memory.dmp

Filesize
560KB

Download
memory/2544-32-0x0000000000480000-0x000000000050C000-memory.dmp

Filesize
560KB

Download
memory/2544-26-0x0000000000480000-0x000000000050C000-memory.dmp

Filesize
560KB

Download
memory/2544-33-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/2544-28-0x0000000000480000-0x000000000050C000-memory.dmp

Filesize
560KB

Download
memory/2544-30-0x0000000000480000-0x000000000050C000-memory.dmp

Filesize
560KB

Download
memory/2544-34-0x0000000002210000-0x00000000022AB000-memory.dmp

Filesize
620KB

Download
memory/2544-36-0x0000000002210000-0x00000000022AB000-memory.dmp

Filesize
620KB

Download
memory/2544-38-0x0000000002210000-0x00000000022AB000-memory.dmp

Filesize
620KB

Download
memory/2544-53-0x0000000002A30000-0x0000000002A31000-memory.dmp

Filesize
4KB

Download
memory/2544-52-0x0000000002A40000-0x0000000002A41000-memory.dmp

Filesize
4KB

Download
memory/2544-17-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/2544-60-0x00000000031B0000-0x00000000031B1000-memory.dmp

Filesize
4KB

Download
memory/2544-59-0x00000000031C0000-0x00000000031C1000-memory.dmp

Filesize
4KB

Download
memory/2544-56-0x00000000031B0000-0x00000000031B1000-memory.dmp

Filesize
4KB

Download
memory/2544-20-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/2544-49-0x0000000002A30000-0x0000000002A31000-memory.dmp

Filesize
4KB

Download
memory/2544-70-0x0000000003EE0000-0x0000000003EE1000-memory.dmp

Filesize
4KB

Download
memory/2544-76-0x0000000003F00000-0x0000000003F01000-memory.dmp

Filesize
4KB

Download
memory/2544-84-0x0000000003F40000-0x0000000003F41000-memory.dmp

Filesize
4KB

Download
memory/2544-83-0x0000000003F30000-0x0000000003F31000-memory.dmp

Filesize
4KB

Download
memory/2544-81-0x0000000003F10000-0x0000000003F11000-memory.dmp

Filesize
4KB

Download
memory/2544-80-0x0000000003F20000-0x0000000003F21000-memory.dmp

Filesize
4KB

Download
memory/2544-77-0x0000000003F10000-0x0000000003F11000-memory.dmp

Filesize
4KB

Download
memory/2544-74-0x0000000003EE0000-0x0000000003EE1000-memory.dmp

Filesize
4KB

Download
memory/2544-73-0x0000000003EF0000-0x0000000003EF1000-memory.dmp

Filesize
4KB

Download
memory/2544-69-0x0000000003ED0000-0x0000000003ED1000-memory.dmp

Filesize
4KB

Download
memory/2544-67-0x0000000003EB0000-0x0000000003EB1000-memory.dmp

Filesize
4KB

Download
memory/2544-66-0x0000000003EC0000-0x0000000003EC1000-memory.dmp

Filesize
4KB

Download
memory/2544-48-0x0000000002A20000-0x0000000002A21000-memory.dmp

Filesize
4KB

Download
memory/2544-46-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download
memory/2544-45-0x0000000002890000-0x0000000002891000-memory.dmp

Filesize
4KB

Download
memory/2544-44-0x0000000002890000-0x0000000002891000-memory.dmp

Filesize
4KB

Download
memory/2544-42-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download