9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c

Analysis

max time kernel
150s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2024, 23:06

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General

Target

9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c.exe
Size

206KB
MD5

5492018432c670f000494780ec4fcb9b
SHA1

7faac63e3646f754a0a127228705b6170eafcc20
SHA256

9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c
SHA512

4f0bbfecffe50dbbc6652f6a99c572ebf67dac4261976e3aa5e47dc4381ee8a99ede4f0986912f7e418369ef9d60a63f4b5aafbee71c19b691007333d8161c74
SSDEEP

3072:gvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unrm:gvEN2U+T6i5LirrllHy4HUcMQY6sm

Score

10^/10

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-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Modifies Installed Components in the registry 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
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
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

Executes dropped EXE 4 IoCs

pid	Process
1464	explorer.exe
3908	spoolsv.exe
3028	svchost.exe
4084	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\Svchost = "c:\\windows\\system\\svchost.exe RO"	svchost.exe
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

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\system\explorer.exe	9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c.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

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4580	9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c.exe
4580	9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c.exe
1464	explorer.exe
1464	explorer.exe
1464	explorer.exe
1464	explorer.exe
1464	explorer.exe
1464	explorer.exe
1464	explorer.exe
1464	explorer.exe
3028	svchost.exe
3028	svchost.exe
3028	svchost.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
3028	svchost.exe
3028	svchost.exe
1464	explorer.exe
1464	explorer.exe
3028	svchost.exe
3028	svchost.exe
1464	explorer.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
1464	explorer.exe
3028	svchost.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
1464	explorer.exe
1464	explorer.exe
3028	svchost.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
3028	svchost.exe
1464	explorer.exe
1464	explorer.exe
1464	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
1464	explorer.exe
3028	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4580	9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c.exe
4580	9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c.exe
1464	explorer.exe
1464	explorer.exe
3908	spoolsv.exe
3908	spoolsv.exe
3028	svchost.exe
3028	svchost.exe
4084	spoolsv.exe
4084	spoolsv.exe
1464	explorer.exe
1464	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 1464	4580	9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c.exe	86
PID 4580 wrote to memory of 1464	4580	9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c.exe	86
PID 4580 wrote to memory of 1464	4580	9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c.exe	86
PID 1464 wrote to memory of 3908	1464	explorer.exe	87
PID 1464 wrote to memory of 3908	1464	explorer.exe	87
PID 1464 wrote to memory of 3908	1464	explorer.exe	87
PID 3908 wrote to memory of 3028	3908	spoolsv.exe	89
PID 3908 wrote to memory of 3028	3908	spoolsv.exe	89
PID 3908 wrote to memory of 3028	3908	spoolsv.exe	89
PID 3028 wrote to memory of 4084	3028	svchost.exe	90
PID 3028 wrote to memory of 4084	3028	svchost.exe	90
PID 3028 wrote to memory of 4084	3028	svchost.exe	90
PID 3028 wrote to memory of 1020	3028	svchost.exe	91
PID 3028 wrote to memory of 1020	3028	svchost.exe	91
PID 3028 wrote to memory of 1020	3028	svchost.exe	91
PID 3028 wrote to memory of 4212	3028	svchost.exe	103
PID 3028 wrote to memory of 4212	3028	svchost.exe	103
PID 3028 wrote to memory of 4212	3028	svchost.exe	103
PID 3028 wrote to memory of 4000	3028	svchost.exe	105
PID 3028 wrote to memory of 4000	3028	svchost.exe	105
PID 3028 wrote to memory of 4000	3028	svchost.exe	105

C:\Users\Admin\AppData\Local\Temp\9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c.exe
"C:\Users\Admin\AppData\Local\Temp\9507429d0cb32ad5bcac3a4d48d4ddfd2803b7d5611df5affd327094e78f124c.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4580
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Modifies Installed Components in the registry
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1464
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3908
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Modifies Installed Components in the registry
      Executes dropped EXE
      Adds Run key to start application
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:3028
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:4084
    - - C:\Windows\SysWOW64\at.exe
        
        at 23:08 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:1020
    - - C:\Windows\SysWOW64\at.exe
        
        at 23:09 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4212
    - - C:\Windows\SysWOW64\at.exe
        
        at 23:10 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
206KB

MD5
34b961999931dbde3d60a48ae5f6d87b

SHA1
5a69f07a814c66494aa21df42a88a84606d185f7

SHA256
646aea82cf2ed9b3d9159f60bb2436c9c1486214e45b9eb8cd62e25fa4139d1d

SHA512
0f602be963f9dfffd604a74589f86e5aec4f1000d085fce74335db45c65d5c23754e0a5279dea80ca5318d53872e65933706d7e5bfe87e8756e78793d1def2bd

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

Filesize
206KB

MD5
07b495f1d42b6c9a3f3b64803c15bb76

SHA1
dfc8e9d0885ed71bedd8d43decc69210f2656dc5

SHA256
0ca0ef9822a64b67724f3652cc2cd08168bd3dade1c3a121d9d90094a300742d

SHA512
563b7a3fa9e5b8c052e9baf95b4139f8c60f220be8933c47b5ba3fdf03bdef25d61bffc6c3e4618036cd125aa90e5e6deec82d4c7291f0d5c028bde76dba579b

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

Filesize
206KB

MD5
a86da7298512692de2e4076900ad079a

SHA1
56075445e4192aea68a7c3df8fc177206447a56b

SHA256
26a366f2bbd7a3494183fa687ffc27bccdd3c6f200c3a1d800f29bdf14cae814

SHA512
56ccc1c144a35330ed275350b209971d87175d20915081b0ac9e2b6013da79a5466c0fe42d8a6d4421372462e50449080a5e05af7a4a32a75872e491065cd7e1

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

Filesize
206KB

MD5
80bad15d2483a2ff36f783cfcee20d12

SHA1
31c7d5bb4e12fddf343b03cad11477fea348fd01

SHA256
44017a2e7c721ad6fcba246e81d7c8228cbff9ebcf27c3b4350002936b5b7e85

SHA512
840466856a862b70061b5427ad4e0ca6c260e1068a189552d4f5f6e18d037ecb2bf6faaae011a8a4595c3c004aaef6597ad81bbeec51eb1fd29ab014161eec50

Download Submit
memory/1464-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3908-36-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4084-33-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4580-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4580-37-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download