ccf74829e0681045497a49edba7a42b5c6b18147a5b3cad6a797cae363822581

Analysis

max time kernel
109s
max time network
110s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
17-08-2024 11:32

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General

Target

5a875beafded7bc4e2bc201dc7d20bc0N.exe
Size

244KB
MD5

5a875beafded7bc4e2bc201dc7d20bc0
SHA1

5941d10d291c7c80b0d54d255a0e24d38aa2a7cd
SHA256

ccf74829e0681045497a49edba7a42b5c6b18147a5b3cad6a797cae363822581
SHA512

14a8e8a425eb254264bd65b19e4e74d7cb4571bebf70345e0cece519644ea636a7462362314cb46d00b089944c66eb9aa993cf5a9554064e1179b03c88750ebc
SSDEEP

6144:sEXlSylvFuWaS54hIAv/QhuA7HY8pPZ0FP6BzxM5EmX:5Aylvv5YRwh9HYd61xhmX

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
3644	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\f7d55aa8 = "C:\\Windows\\apppatch\\svchost.exe"	5a875beafded7bc4e2bc201dc7d20bc0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\f7d55aa8 = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\svchost.exe	5a875beafded7bc4e2bc201dc7d20bc0N.exe
File opened for modification	C:\Windows\apppatch\svchost.exe	5a875beafded7bc4e2bc201dc7d20bc0N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4616	3644	WerFault.exe	84

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	5a875beafded7bc4e2bc201dc7d20bc0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3644	svchost.exe
3644	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1524	5a875beafded7bc4e2bc201dc7d20bc0N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1524 wrote to memory of 3644	1524	5a875beafded7bc4e2bc201dc7d20bc0N.exe	84
PID 1524 wrote to memory of 3644	1524	5a875beafded7bc4e2bc201dc7d20bc0N.exe	84
PID 1524 wrote to memory of 3644	1524	5a875beafded7bc4e2bc201dc7d20bc0N.exe	84

C:\Users\Admin\AppData\Local\Temp\5a875beafded7bc4e2bc201dc7d20bc0N.exe
"C:\Users\Admin\AppData\Local\Temp\5a875beafded7bc4e2bc201dc7d20bc0N.exe"
1⤵
- Modifies WinLogon
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1524
- 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:3644
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3644 -s 824
    3⤵
    - Program crash
    PID:4616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3644 -ip 3644
1⤵
PID:4180

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
244KB

MD5
4bba72f05b98706088d520261844109f

SHA1
276c8c4b5be8ed36bb6987f7e287b5e0e2fedae8

SHA256
6cb5b918492f7569a910d467af6738e8fccb58bea667d27db097e61bf6cbf3b5

SHA512
d49d12a5e12d880971ec511ff781c7183941d3219f71bfa0cbbb5ab86b3e63ae0ae70763d8069d5fd3d0abc52d425e09c6fca81c013400dcfd1172fba5758f97

Download Submit
memory/1524-0-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/1524-1-0x0000000002200000-0x0000000002268000-memory.dmp

Filesize
416KB

Download
memory/1524-2-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/1524-14-0x0000000002200000-0x0000000002268000-memory.dmp

Filesize
416KB

Download
memory/1524-15-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/3644-16-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/3644-13-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/3644-17-0x00000000027A0000-0x00000000027EA000-memory.dmp

Filesize
296KB

Download
memory/3644-18-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/3644-19-0x0000000002B40000-0x0000000002B98000-memory.dmp

Filesize
352KB

Download
memory/3644-21-0x0000000002B40000-0x0000000002B98000-memory.dmp

Filesize
352KB

Download
memory/3644-23-0x0000000002B40000-0x0000000002B98000-memory.dmp

Filesize
352KB

Download
memory/3644-26-0x0000000002B40000-0x0000000002B98000-memory.dmp

Filesize
352KB

Download