f8c9c54659aabc6260e174bbf89afe811b04087b1914b1847ac7015240305474

Analysis

max time kernel
95s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
16/07/2024, 10:24

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General

Target

a7e84a86154e0a949a25a3f6f40e6e80N.exe
Size

244KB
MD5

a7e84a86154e0a949a25a3f6f40e6e80
SHA1

d10c135ac0294afc940f0c6ff5817fab62f89613
SHA256

f8c9c54659aabc6260e174bbf89afe811b04087b1914b1847ac7015240305474
SHA512

1695bbfcc87058e78fecd6bc21c812a29dbc0629ff4b2fe5af1b6f8809c7cd896de9f0a6968744db5acbde7343deed6da519beedb5550403137f8ee454826300
SSDEEP

6144:MEXlSylvFuWaS54hIAv/QhuA7HY8pPZ0FP6BzxM5EmX:ZAylvv5YRwh9HYd61xhmX

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
3392	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\89d8a675 = "C:\\Windows\\apppatch\\svchost.exe"	a7e84a86154e0a949a25a3f6f40e6e80N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\89d8a675 = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\svchost.exe	a7e84a86154e0a949a25a3f6f40e6e80N.exe
File opened for modification	C:\Windows\apppatch\svchost.exe	a7e84a86154e0a949a25a3f6f40e6e80N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3216	3392	WerFault.exe	84

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3392	svchost.exe
3392	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
512	a7e84a86154e0a949a25a3f6f40e6e80N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 512 wrote to memory of 3392	512	a7e84a86154e0a949a25a3f6f40e6e80N.exe	84
PID 512 wrote to memory of 3392	512	a7e84a86154e0a949a25a3f6f40e6e80N.exe	84
PID 512 wrote to memory of 3392	512	a7e84a86154e0a949a25a3f6f40e6e80N.exe	84

C:\Users\Admin\AppData\Local\Temp\a7e84a86154e0a949a25a3f6f40e6e80N.exe
"C:\Users\Admin\AppData\Local\Temp\a7e84a86154e0a949a25a3f6f40e6e80N.exe"
1⤵
- Modifies WinLogon
- Drops file in Windows directory
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:512
- C:\Windows\apppatch\svchost.exe
  "C:\Windows\apppatch\svchost.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Modifies WinLogon
  - Suspicious behavior: EnumeratesProcesses
  PID:3392
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3392 -s 832
    3⤵
    - Program crash
    PID:3216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 3392 -ip 3392
1⤵
PID:2100

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
244KB

MD5
aeb1c39b5dbf0e90a9f79d96d70f56f1

SHA1
fe4393e78f0e411a2ce662e8ae695328bb0ab749

SHA256
007b1040b62c7f067a13d2420e7f2c3e177fbf1cd28148ebc5ce287da9ffdd96

SHA512
fddf80b2c8a443b79623fbb8c2338f7db5fe79c4333d36c05d1c0c6e9d477981181480564df327a889616ee84a4e733c66f7b6eeb6f187f6a38b808002fb8cd3

Download Submit
memory/512-0-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/512-1-0x0000000002210000-0x0000000002278000-memory.dmp

Filesize
416KB

Download
memory/512-2-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/512-11-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/512-12-0x0000000002210000-0x0000000002278000-memory.dmp

Filesize
416KB

Download
memory/3392-14-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/3392-15-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/3392-16-0x00000000027A0000-0x00000000027EA000-memory.dmp

Filesize
296KB

Download
memory/3392-17-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/3392-18-0x0000000002B40000-0x0000000002B98000-memory.dmp

Filesize
352KB

Download
memory/3392-20-0x0000000002B40000-0x0000000002B98000-memory.dmp

Filesize
352KB

Download
memory/3392-22-0x0000000002B40000-0x0000000002B98000-memory.dmp

Filesize
352KB

Download
memory/3392-25-0x0000000002B40000-0x0000000002B98000-memory.dmp

Filesize
352KB

Download