Analysis
-
max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
25-12-2023 03:48
Static task
static1
Behavioral task
behavioral1
Sample
03cd9e81719c06c5c8a29cdcfac3ae7e.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
03cd9e81719c06c5c8a29cdcfac3ae7e.exe
Resource
win10v2004-20231215-en
General
-
Target
03cd9e81719c06c5c8a29cdcfac3ae7e.exe
-
Size
548KB
-
MD5
03cd9e81719c06c5c8a29cdcfac3ae7e
-
SHA1
95d18fc034c40fcea3cd6f4b72ed9e4d29e858bb
-
SHA256
73fb68e2ea01ff336c410d3b98c7d3e4c8e48c1565bcc50be7f262b58726d9e7
-
SHA512
da4bedf781a2adb08674cf88c79fe12e24689b0c532c30c70ae26c35727dafe082457e637ba1c8f9b34def7f998bf37d725ddef96bc0c584a9e7090bb5febc90
-
SSDEEP
6144:kB/RFtlUYA5xHtSl8rVj+8GkYJTIRT68O:8lWjt+8WWTK
Malware Config
Signatures
-
Modifies WinLogon for persistence 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\"" spoolsv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\"" 03cd9e81719c06c5c8a29cdcfac3ae7e.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
pid Process 2884 netsh.exe -
Deletes itself 1 IoCs
pid Process 2872 spoolsv.exe -
Executes dropped EXE 3 IoCs
pid Process 2916 spoolsv.exe 1628 spoolsv.exe 2872 spoolsv.exe -
Loads dropped DLL 4 IoCs
pid Process 2316 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 2316 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 2916 spoolsv.exe 1628 spoolsv.exe -
Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\"" spoolsv.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\"" spoolsv.exe Set value (str) \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\"" 03cd9e81719c06c5c8a29cdcfac3ae7e.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\"" 03cd9e81719c06c5c8a29cdcfac3ae7e.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 03cd9e81719c06c5c8a29cdcfac3ae7e.exe File opened for modification \??\PhysicalDrive0 spoolsv.exe -
Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 3000 set thread context of 1700 3000 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 28 PID 1700 set thread context of 2316 1700 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 29 PID 2916 set thread context of 1628 2916 spoolsv.exe 35 PID 1628 set thread context of 2872 1628 spoolsv.exe 36 -
description ioc Process Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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 03cd9e81719c06c5c8a29cdcfac3ae7e.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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 03cd9e81719c06c5c8a29cdcfac3ae7e.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474 03cd9e81719c06c5c8a29cdcfac3ae7e.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 3000 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 1700 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 2316 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 2916 spoolsv.exe 1628 spoolsv.exe 2872 spoolsv.exe -
Suspicious use of WriteProcessMemory 42 IoCs
description pid Process procid_target PID 3000 wrote to memory of 1700 3000 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 28 PID 3000 wrote to memory of 1700 3000 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 28 PID 3000 wrote to memory of 1700 3000 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 28 PID 3000 wrote to memory of 1700 3000 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 28 PID 3000 wrote to memory of 1700 3000 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 28 PID 3000 wrote to memory of 1700 3000 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 28 PID 3000 wrote to memory of 1700 3000 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 28 PID 3000 wrote to memory of 1700 3000 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 28 PID 3000 wrote to memory of 1700 3000 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 28 PID 1700 wrote to memory of 2316 1700 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 29 PID 1700 wrote to memory of 2316 1700 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 29 PID 1700 wrote to memory of 2316 1700 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 29 PID 1700 wrote to memory of 2316 1700 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 29 PID 1700 wrote to memory of 2316 1700 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 29 PID 1700 wrote to memory of 2316 1700 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 29 PID 1700 wrote to memory of 2316 1700 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 29 PID 1700 wrote to memory of 2316 1700 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 29 PID 2316 wrote to memory of 2884 2316 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 32 PID 2316 wrote to memory of 2884 2316 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 32 PID 2316 wrote to memory of 2884 2316 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 32 PID 2316 wrote to memory of 2884 2316 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 32 PID 2316 wrote to memory of 2916 2316 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 34 PID 2316 wrote to memory of 2916 2316 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 34 PID 2316 wrote to memory of 2916 2316 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 34 PID 2316 wrote to memory of 2916 2316 03cd9e81719c06c5c8a29cdcfac3ae7e.exe 34 PID 2916 wrote to memory of 1628 2916 spoolsv.exe 35 PID 2916 wrote to memory of 1628 2916 spoolsv.exe 35 PID 2916 wrote to memory of 1628 2916 spoolsv.exe 35 PID 2916 wrote to memory of 1628 2916 spoolsv.exe 35 PID 2916 wrote to memory of 1628 2916 spoolsv.exe 35 PID 2916 wrote to memory of 1628 2916 spoolsv.exe 35 PID 2916 wrote to memory of 1628 2916 spoolsv.exe 35 PID 2916 wrote to memory of 1628 2916 spoolsv.exe 35 PID 2916 wrote to memory of 1628 2916 spoolsv.exe 35 PID 1628 wrote to memory of 2872 1628 spoolsv.exe 36 PID 1628 wrote to memory of 2872 1628 spoolsv.exe 36 PID 1628 wrote to memory of 2872 1628 spoolsv.exe 36 PID 1628 wrote to memory of 2872 1628 spoolsv.exe 36 PID 1628 wrote to memory of 2872 1628 spoolsv.exe 36 PID 1628 wrote to memory of 2872 1628 spoolsv.exe 36 PID 1628 wrote to memory of 2872 1628 spoolsv.exe 36 PID 1628 wrote to memory of 2872 1628 spoolsv.exe 36
Processes
-
C:\Users\Admin\AppData\Local\Temp\03cd9e81719c06c5c8a29cdcfac3ae7e.exe"C:\Users\Admin\AppData\Local\Temp\03cd9e81719c06c5c8a29cdcfac3ae7e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3000 -
C:\Users\Admin\AppData\Local\Temp\03cd9e81719c06c5c8a29cdcfac3ae7e.exe"C:\Users\Admin\AppData\Local\Temp\03cd9e81719c06c5c8a29cdcfac3ae7e.exe"2⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1700 -
C:\Users\Admin\AppData\Local\Temp\03cd9e81719c06c5c8a29cdcfac3ae7e.exe"C:\Users\Admin\AppData\Local\Temp\03cd9e81719c06c5c8a29cdcfac3ae7e.exe"3⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Modifies system certificate store
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2316 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\spoolsv.exe" CityScape Enable4⤵
- Modifies Windows Firewall
PID:2884
-
-
C:\Users\Admin\AppData\Roaming\spoolsv.exe/d C:\Users\Admin\AppData\Local\Temp\03cd9e81719c06c5c8a29cdcfac3ae7e.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2916 -
C:\Users\Admin\AppData\Roaming\spoolsv.exe/d C:\Users\Admin\AppData\Local\Temp\03cd9e81719c06c5c8a29cdcfac3ae7e.exe5⤵
- Executes dropped EXE
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1628 -
C:\Users\Admin\AppData\Roaming\spoolsv.exe/d C:\Users\Admin\AppData\Local\Temp\03cd9e81719c06c5c8a29cdcfac3ae7e.exe6⤵
- Modifies WinLogon for persistence
- Deletes itself
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:2872
-
-
-
-
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
65KB
MD5ac05d27423a85adc1622c714f2cb6184
SHA1b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA256c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
SHA5126d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
-
Filesize
171KB
MD59c0c641c06238516f27941aa1166d427
SHA164cd549fb8cf014fcd9312aa7a5b023847b6c977
SHA2564276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f
SHA512936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06
-
Filesize
39KB
MD55084c479bc345c16bd5539bcda389cd0
SHA158cd1fdeaf85b30afe1ce693275b02f796a069a9
SHA25635523bcdaba71becb0cf4cb7d1d7b92a8227caf2a75df1883a2e3ff45845ce58
SHA51223ddd10f3a17c004e59bd1066085c3426595b356d97dc5fc7634c8f19bd6a89ba21c8f0b58035fd1518db1f853f159fcfc839617a55ae47d7c262096602a37f2
-
Filesize
548KB
MD5cb267aa747c53b9ffc8d8e28674b0a89
SHA19d9bafaab2e2d205a036023e3e9cd07f69eacdc5
SHA2569b8b4aa2fd479723cadd603f7bce0046f394fc0387f182c80ce502292728aaf7
SHA512d65386d7874e536dee87adafb67e3b704df8613af42014b60ded50214ddde04834de3436ad0ec3b6b63e3f704b1e7446db2d3c56a5a0097b45aae9596100b3b9