1fbd5101492ab9a490ccf0f925c0e672858a6ff31aeba78c217481366ef62a2a

Analysis

max time kernel
120s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
12/09/2024, 08:04

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General

Target

e351668d68d45749607c1a6cfb1de480N.exe
Size

67KB
MD5

e351668d68d45749607c1a6cfb1de480
SHA1

5c5419d549d690406ea5a8f3791d0927db999584
SHA256

1fbd5101492ab9a490ccf0f925c0e672858a6ff31aeba78c217481366ef62a2a
SHA512

4be86887e25f9f7811c819f1b61f61109fd9c3cffc453b0eb4cb04514bab4aa834103a8bcc28ae5c79d28fbaeec46419302fb116f99aee5ca1d64360be4dcae6
SSDEEP

1536:EgXsfgWQN1kYsRxWTg3PwSWe991Rdolpdz6JAkAT:1tWYfGATvPe9slp+ApT

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	svchost.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	explorer.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
3012	explorer.exe
3228	spoolsv.exe
4304	svchost.exe
3252	spoolsv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	svchost.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\system\explorer.exe	e351668d68d45749607c1a6cfb1de480N.exe
File opened for modification	\??\c:\windows\system\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	spoolsv.exe
File opened for modification	\??\c:\windows\system\explorer.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 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	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e351668d68d45749607c1a6cfb1de480N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4248	e351668d68d45749607c1a6cfb1de480N.exe
4248	e351668d68d45749607c1a6cfb1de480N.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe
3012	explorer.exe
3012	explorer.exe
4304	svchost.exe
4304	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3012	explorer.exe
4304	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4248	e351668d68d45749607c1a6cfb1de480N.exe
4248	e351668d68d45749607c1a6cfb1de480N.exe
3012	explorer.exe
3012	explorer.exe
3228	spoolsv.exe
3228	spoolsv.exe
4304	svchost.exe
4304	svchost.exe
3252	spoolsv.exe
3252	spoolsv.exe
3012	explorer.exe
3012	explorer.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4248 wrote to memory of 3012	4248	e351668d68d45749607c1a6cfb1de480N.exe	84
PID 4248 wrote to memory of 3012	4248	e351668d68d45749607c1a6cfb1de480N.exe	84
PID 4248 wrote to memory of 3012	4248	e351668d68d45749607c1a6cfb1de480N.exe	84
PID 3012 wrote to memory of 3228	3012	explorer.exe	85
PID 3012 wrote to memory of 3228	3012	explorer.exe	85
PID 3012 wrote to memory of 3228	3012	explorer.exe	85
PID 3228 wrote to memory of 4304	3228	spoolsv.exe	87
PID 3228 wrote to memory of 4304	3228	spoolsv.exe	87
PID 3228 wrote to memory of 4304	3228	spoolsv.exe	87
PID 4304 wrote to memory of 3252	4304	svchost.exe	88
PID 4304 wrote to memory of 3252	4304	svchost.exe	88
PID 4304 wrote to memory of 3252	4304	svchost.exe	88
PID 4304 wrote to memory of 4188	4304	svchost.exe	90
PID 4304 wrote to memory of 4188	4304	svchost.exe	90
PID 4304 wrote to memory of 4188	4304	svchost.exe	90
PID 4304 wrote to memory of 1824	4304	svchost.exe	101
PID 4304 wrote to memory of 1824	4304	svchost.exe	101
PID 4304 wrote to memory of 1824	4304	svchost.exe	101

C:\Users\Admin\AppData\Local\Temp\e351668d68d45749607c1a6cfb1de480N.exe
"C:\Users\Admin\AppData\Local\Temp\e351668d68d45749607c1a6cfb1de480N.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4248
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3012
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3228
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Boot or Logon Autostart Execution: Active Setup
      Executes dropped EXE
      Adds Run key to start application
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4304
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:3252
    - - C:\Windows\SysWOW64\at.exe
        
        at 08:06 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4188
    - - C:\Windows\SysWOW64\at.exe
        
        at 08:07 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:1824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

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:\Users\Admin\AppData\Roaming\mrsys.exe

Filesize
67KB

MD5
fde1ad13b5456caf55f257fc7dc7ab14

SHA1
cfbea86cad0a5b2074e8b9d19b985c5913f1d8cd

SHA256
4baac2ea7112da61162acd13f5d0de84b4771ec3ea024e1994f0cf573027b3b8

SHA512
699e5a112f6f36016e461b7289b0ed8471e6ddc920a7f3a6607313f89e94fd8486aafea390141d589aa89d60cab5ecb0041a58ca17facfc55a83f01446274043

Download Submit
C:\Windows\System\explorer.exe

Filesize
67KB

MD5
fef9704d0cc4d1fb4a17773052ccce2e

SHA1
f2d47b60a2ab538badcba38948c5cf9eb9c0efc6

SHA256
740b6d9c9366e33dd4f91e488b901020338eaa8c5679226d3db584b78b538437

SHA512
c282440f3bdc02847311f58695be63bdcd91c53fc020ef6acb36c479861ac537e34ea6791a18056d611d454c20b5383d352c85f6c5dc10f6d8615b2ec700462f

Download Submit
C:\Windows\System\spoolsv.exe

Filesize
67KB

MD5
85c95c7a7b3cd46591e72a9a03ebb4f0

SHA1
9e7020c676a3b440ef68e25a51ece37531ad63ca

SHA256
71dafe11a89bc238f03b5b63343001f9a20b3e9cb7d04ec266af108c49011d88

SHA512
a7b1b58a57ecebee8533d56b6eb1c4aa36131b3848142ab3310d90517233ad7cc78a8a685dbb2035b64b59b6d1a62939c6dd15e0767c5902efa6bf1b47859d2e

Download Submit
C:\Windows\System\svchost.exe

Filesize
67KB

MD5
4e02dfa3ad24ec1fc391751c66416174

SHA1
2aecaadc8b12145a1e63e4ad34e8590e653d532a

SHA256
32f3c56e0a6d5affb2f90fcd933f5f94a2e84d12bd04540a0f2ab6f8e293f73b

SHA512
5860b44a03f16f9d753aa1d60558efcf0f2843830dbf5e7c31a447b272e30cea3ffaf36676ac4a4148c31e335e2016abdebd0521b449a544bbef3dd2a8197f48

Download Submit
memory/3012-73-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3012-61-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3012-13-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3012-16-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3012-14-0x0000000075AD0000-0x0000000075C2D000-memory.dmp

Filesize
1.4MB

Download
memory/3228-33-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3228-26-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3228-25-0x0000000075AD0000-0x0000000075C2D000-memory.dmp

Filesize
1.4MB

Download
memory/3228-56-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3252-46-0x0000000075AD0000-0x0000000075C2D000-memory.dmp

Filesize
1.4MB

Download
memory/3252-52-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4248-58-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4248-41-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/4248-45-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/4248-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4248-59-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/4248-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4248-4-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/4248-2-0x0000000075AD0000-0x0000000075C2D000-memory.dmp

Filesize
1.4MB

Download
memory/4248-1-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/4304-42-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4304-37-0x0000000075AD0000-0x0000000075C2D000-memory.dmp

Filesize
1.4MB

Download
memory/4304-62-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download