Analysis
-
max time kernel
150s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
21-11-2024 23:02
Static task
static1
Behavioral task
behavioral1
Sample
3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe
Resource
win10v2004-20241007-en
General
-
Target
3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe
-
Size
630KB
-
MD5
de428e3a7d4d7ef369f524d81ab63f3b
-
SHA1
175cf1088027980a6ea136487e0af8ef38d21e16
-
SHA256
3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62
-
SHA512
e46c3715e31f9c24454ccda981f1711128361e018f2dfbfe65ae0e9836f1313e52ecb6560c6d2bf84708f6a561dcdbf5a5905c788f76f48496eeb53aa52a0c21
-
SSDEEP
12288:PFUNDaM85s/AxkQ4xdv3yNIGlSYjjlrg+aaUX:PFOahs4xkQ4DvCNIGl3jjZg+XK
Malware Config
Signatures
-
Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
Processes:
svchost.exeexplorer.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" explorer.exe -
Executes dropped EXE 6 IoCs
Processes:
3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe icsys.icn.exeexplorer.exespoolsv.exesvchost.exespoolsv.exepid process 2904 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 2056 icsys.icn.exe 2356 explorer.exe 2740 spoolsv.exe 2840 svchost.exe 2620 spoolsv.exe -
Loads dropped DLL 6 IoCs
Processes:
3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exeicsys.icn.exeexplorer.exespoolsv.exesvchost.exepid process 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 2056 icsys.icn.exe 2356 explorer.exe 2740 spoolsv.exe 2840 svchost.exe -
Adds Run key to start application 2 TTPs 4 IoCs
Processes:
svchost.exeexplorer.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" explorer.exe -
Drops file in System32 directory 2 IoCs
Processes:
explorer.exesvchost.exedescription ioc process File opened for modification C:\Windows\SysWOW64\explorer.exe explorer.exe File opened for modification C:\Windows\SysWOW64\explorer.exe svchost.exe -
Drops file in Windows directory 5 IoCs
Processes:
explorer.exe3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exeicsys.icn.exespoolsv.exedescription ioc process File opened for modification C:\Windows\Resources\tjud.exe explorer.exe File opened for modification C:\Windows\Resources\Themes\icsys.icn.exe 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe File opened for modification \??\c:\windows\resources\themes\explorer.exe icsys.icn.exe File opened for modification \??\c:\windows\resources\spoolsv.exe explorer.exe File opened for modification \??\c:\windows\resources\svchost.exe spoolsv.exe -
System Location Discovery: System Language Discovery 1 TTPs 9 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exesvchost.exespoolsv.exeicsys.icn.exeexplorer.exespoolsv.exeschtasks.exeschtasks.exeschtasks.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.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 icsys.icn.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language explorer.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language spoolsv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exeschtasks.exepid process 2872 schtasks.exe 1540 schtasks.exe 2568 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exeicsys.icn.exeexplorer.exesvchost.exepid process 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2356 explorer.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe 2840 svchost.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
Processes:
explorer.exesvchost.exepid process 2356 explorer.exe 2840 svchost.exe -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exeicsys.icn.exeexplorer.exespoolsv.exesvchost.exespoolsv.exepid process 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 2056 icsys.icn.exe 2056 icsys.icn.exe 2356 explorer.exe 2356 explorer.exe 2740 spoolsv.exe 2740 spoolsv.exe 2840 svchost.exe 2840 svchost.exe 2620 spoolsv.exe 2620 spoolsv.exe -
Suspicious use of WriteProcessMemory 43 IoCs
Processes:
3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exeicsys.icn.exeexplorer.exespoolsv.exesvchost.exedescription pid process target process PID 1640 wrote to memory of 2904 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe PID 1640 wrote to memory of 2904 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe PID 1640 wrote to memory of 2904 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe PID 1640 wrote to memory of 2904 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe PID 1640 wrote to memory of 2904 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe PID 1640 wrote to memory of 2904 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe PID 1640 wrote to memory of 2904 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe PID 1640 wrote to memory of 2056 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe icsys.icn.exe PID 1640 wrote to memory of 2056 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe icsys.icn.exe PID 1640 wrote to memory of 2056 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe icsys.icn.exe PID 1640 wrote to memory of 2056 1640 3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe icsys.icn.exe PID 2056 wrote to memory of 2356 2056 icsys.icn.exe explorer.exe PID 2056 wrote to memory of 2356 2056 icsys.icn.exe explorer.exe PID 2056 wrote to memory of 2356 2056 icsys.icn.exe explorer.exe PID 2056 wrote to memory of 2356 2056 icsys.icn.exe explorer.exe PID 2356 wrote to memory of 2740 2356 explorer.exe spoolsv.exe PID 2356 wrote to memory of 2740 2356 explorer.exe spoolsv.exe PID 2356 wrote to memory of 2740 2356 explorer.exe spoolsv.exe PID 2356 wrote to memory of 2740 2356 explorer.exe spoolsv.exe PID 2740 wrote to memory of 2840 2740 spoolsv.exe svchost.exe PID 2740 wrote to memory of 2840 2740 spoolsv.exe svchost.exe PID 2740 wrote to memory of 2840 2740 spoolsv.exe svchost.exe PID 2740 wrote to memory of 2840 2740 spoolsv.exe svchost.exe PID 2840 wrote to memory of 2620 2840 svchost.exe spoolsv.exe PID 2840 wrote to memory of 2620 2840 svchost.exe spoolsv.exe PID 2840 wrote to memory of 2620 2840 svchost.exe spoolsv.exe PID 2840 wrote to memory of 2620 2840 svchost.exe spoolsv.exe PID 2356 wrote to memory of 2880 2356 explorer.exe Explorer.exe PID 2356 wrote to memory of 2880 2356 explorer.exe Explorer.exe PID 2356 wrote to memory of 2880 2356 explorer.exe Explorer.exe PID 2356 wrote to memory of 2880 2356 explorer.exe Explorer.exe PID 2840 wrote to memory of 2872 2840 svchost.exe schtasks.exe PID 2840 wrote to memory of 2872 2840 svchost.exe schtasks.exe PID 2840 wrote to memory of 2872 2840 svchost.exe schtasks.exe PID 2840 wrote to memory of 2872 2840 svchost.exe schtasks.exe PID 2840 wrote to memory of 1540 2840 svchost.exe schtasks.exe PID 2840 wrote to memory of 1540 2840 svchost.exe schtasks.exe PID 2840 wrote to memory of 1540 2840 svchost.exe schtasks.exe PID 2840 wrote to memory of 1540 2840 svchost.exe schtasks.exe PID 2840 wrote to memory of 2568 2840 svchost.exe schtasks.exe PID 2840 wrote to memory of 2568 2840 svchost.exe schtasks.exe PID 2840 wrote to memory of 2568 2840 svchost.exe schtasks.exe PID 2840 wrote to memory of 2568 2840 svchost.exe schtasks.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe"C:\Users\Admin\AppData\Local\Temp\3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe"1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1640 -
\??\c:\users\admin\appdata\local\temp\3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exec:\users\admin\appdata\local\temp\3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe2⤵
- Executes dropped EXE
PID:2904
-
-
C:\Windows\Resources\Themes\icsys.icn.exeC:\Windows\Resources\Themes\icsys.icn.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2056 -
\??\c:\windows\resources\themes\explorer.exec:\windows\resources\themes\explorer.exe3⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- 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:2356 -
\??\c:\windows\resources\spoolsv.exec:\windows\resources\spoolsv.exe SE4⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2740 -
\??\c:\windows\resources\svchost.exec:\windows\resources\svchost.exe5⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2840 -
\??\c:\windows\resources\spoolsv.exec:\windows\resources\spoolsv.exe PR6⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:2620
-
-
C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 23:04 /f6⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2872
-
-
C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 23:05 /f6⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1540
-
-
C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 23:06 /f6⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2568
-
-
-
-
C:\Windows\Explorer.exeC:\Windows\Explorer.exe4⤵PID:2880
-
-
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
135KB
MD599bc526f84af38b37ecc5a7db80ab594
SHA11d8d59612f7758ec5216d11daf6dff4d48fe76bc
SHA256534fe96382d744b26bba9738d91062e9f379c69589e79d8a9069d3ca66baa538
SHA5127bb264df49ef67a64e7568cc95056da09ea44562477de8121f4524d192255e7925945fcf8e8cde34de84451a1202d830b68fd16bcd69f88fd07a8662fa423eab
-
\Users\Admin\AppData\Local\Temp\3c28db7d5274460189167458e4120cc0fd607e2a63d94b0e1004f37049f63a62.exe
Filesize495KB
MD5d3205e595a423a7900ec8a368feaaafe
SHA198bf400147e6c93fe8399f7cecdfa09d4dedfc2e
SHA2569d0b92f0257a6f3b99ced38d27b2db2fc7165c1f07d2fff656a0c87313a33a9c
SHA5120732fd230c0420c987de7d54e6d5c3d79a8ccfa417c857d408dc8376d6a6e8b307cc9ed29ef15209c21addd91233155e4ed3fb203bde336aaf79cea816ede412
-
Filesize
135KB
MD53733cf8be2beaf37b512c4b4fc95e607
SHA133963c28544c7df9ffac981db215c8096f9e0217
SHA256e4ad273aab3d07096b40c228087565ecd911416735757db13e6d8b7b01619995
SHA5126cd0f30af91c38630bdeb7d8797fc961a3814dcbd09ef18db72949c7e4d22ff5af758deaa9a7a363cc8559fa414f7c84c1eb83cc8d72028cd960ab367a6aa979
-
Filesize
135KB
MD57c297ea13b88030a67118a94f96c928e
SHA138bfd3fb8ae3ee8003f672cca5e10cd034e85637
SHA2567cbbcb3623f71e4cc1cfcb89cab7f8442ca6c77dda6605ceff6e5a8c73f1b699
SHA51248e72531036afd35225e8296c1e30c7fd2ff941749f0df6deb9f3728c16512cd308723a073265e9c1a2e805bbcaac1dd1086247d4ca8a31a2b69efe4fd2927df
-
Filesize
135KB
MD54233d3078893343a21dd4e0a1ca2b2dd
SHA1bd1ac71bfb239743fc4588c59dcbc30dca4cc44c
SHA25671987f4365ca3a7cbf8044ffd5fd5236414fc170a19c19a236e6845ab9d363bf
SHA512cf59d02d04817131baaa90ecaf27e4f878ce841223b29b2a9fc0ea96bf720d050db021430dc66de69b964be1b0a8b69c8d5196475696cfa02b7d9a0fe0a171b0