6052c88fc0e8c7e0f576331f0fd54fe022bf7ddf623bcfd08f6724f68b5b568e

Analysis

max time kernel
97s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/09/2024, 20:20

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General

Target

855c2109b17c86741a2efbb08a3ffa30N.exe
Size

349KB
MD5

855c2109b17c86741a2efbb08a3ffa30
SHA1

6519929da8262243725819873356ed3f22434f5b
SHA256

6052c88fc0e8c7e0f576331f0fd54fe022bf7ddf623bcfd08f6724f68b5b568e
SHA512

45c6467f92052c0227b7e0f81987624212f0acf59185f4282e8f6a1b6d36a7924fef96dab0d869f1f9e440a9348bf528e9a53a7752972100d34460856bf0e774
SSDEEP

6144:zVTQqSiexKAK4y6UvcZSeNH49qQQOH+ym4LLIoTqHSMaxzL:lSiOK4yjNQOGzoTCSMG

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
3612	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\643ad847 = "C:\\Windows\\apppatch\\svchost.exe"	855c2109b17c86741a2efbb08a3ffa30N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\643ad847 = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\svchost.exe	855c2109b17c86741a2efbb08a3ffa30N.exe
File opened for modification	C:\Windows\apppatch\svchost.exe	855c2109b17c86741a2efbb08a3ffa30N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3340	3612	WerFault.exe	83

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	855c2109b17c86741a2efbb08a3ffa30N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3612	svchost.exe
3612	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4260	855c2109b17c86741a2efbb08a3ffa30N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4260 wrote to memory of 3612	4260	855c2109b17c86741a2efbb08a3ffa30N.exe	83
PID 4260 wrote to memory of 3612	4260	855c2109b17c86741a2efbb08a3ffa30N.exe	83
PID 4260 wrote to memory of 3612	4260	855c2109b17c86741a2efbb08a3ffa30N.exe	83

C:\Users\Admin\AppData\Local\Temp\855c2109b17c86741a2efbb08a3ffa30N.exe
"C:\Users\Admin\AppData\Local\Temp\855c2109b17c86741a2efbb08a3ffa30N.exe"
1⤵
- Modifies WinLogon
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:4260
- 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:3612
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3612 -s 828
    3⤵
    - Program crash
    PID:3340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3612 -ip 3612
1⤵
PID:2476

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

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Downloads

C:\Windows\apppatch\svchost.exe

Filesize
349KB

MD5
8098658aeafe98207119fa74e8795c36

SHA1
5d31829c1b5d588eefb04514f5a7477442c72b94

SHA256
fd87363cffe89ce0ff1eb556396f89b4a4afa92ed85630a7d9af3e336434de8b

SHA512
d50304c111f8889d26e0ae053b8d156a32de28181d6c92ad488fabe26cd789816fddffc0575f06163bc0d9f8e8fb53c143f42b82f7fea4714598afe3f4059b8f

Download Submit
memory/3612-10-0x0000000003600000-0x000000000364A000-memory.dmp

Filesize
296KB

Download
memory/3612-13-0x0000000003790000-0x00000000037E8000-memory.dmp

Filesize
352KB

Download
memory/3612-14-0x0000000003790000-0x00000000037E8000-memory.dmp

Filesize
352KB

Download
memory/3612-16-0x0000000003790000-0x00000000037E8000-memory.dmp

Filesize
352KB

Download
memory/3612-25-0x0000000003790000-0x00000000037E8000-memory.dmp

Filesize
352KB

Download
memory/4260-8-0x00000000009A0000-0x0000000000A09000-memory.dmp

Filesize
420KB

Download