Analysis
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max time kernel
135s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
05-08-2024 04:08
Static task
static1
Behavioral task
behavioral1
Sample
de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe
Resource
win7-20240704-en
General
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Target
de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe
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Size
1.2MB
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MD5
39b7639f440ec68a954046a6fda9b6d5
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SHA1
065098afde37c1608d1a1f148ce6e24ede754b7f
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SHA256
de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c
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SHA512
d4de72afece2deaaf2396e5ad1a4751ae2f8b3c61c3cf887915e1cb13a4a3ddf8a3ece9aaf23cc6f992da3a35583c5109fae077b6a7627d78c8f51acf777059d
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SSDEEP
24576:XAHnh+eWsN3skA4RV1Hom2KXMmHatoI3fr6j2/2+n/a5y:Kh+ZkldoPK8YatoMYy
Malware Config
Extracted
nanocore
1.2.2.0
213.184.126.143:1993
023e0719-23ff-48a0-a14a-16f92fea10e1
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activate_away_mode
true
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backup_connection_host
213.184.126.143
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2019-01-21T14:43:07.916268436Z
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bypass_user_account_control
false
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bypass_user_account_control_data
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clear_access_control
true
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clear_zone_identifier
false
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connect_delay
4000
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connection_port
1993
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default_group
isreal
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enable_debug_mode
true
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gc_threshold
1.048576e+07
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keep_alive_timeout
30000
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keyboard_logging
false
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lan_timeout
2500
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max_packet_size
1.048576e+07
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mutex
023e0719-23ff-48a0-a14a-16f92fea10e1
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
213.184.126.143
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primary_dns_server
8.8.8.8
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request_elevation
true
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restart_delay
5000
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run_delay
0
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run_on_startup
false
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set_critical_process
true
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timeout_interval
5000
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use_custom_dns_server
false
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version
1.2.2.0
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wan_timeout
8000
Signatures
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Drops startup file 1 IoCs
Processes:
de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegAsm.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAS Monitor = "C:\\Program Files (x86)\\NAS Monitor\\nasmon.exe" RegAsm.exe -
Processes:
RegAsm.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exedescription pid process target process PID 952 set thread context of 1504 952 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe RegAsm.exe -
Drops file in Program Files directory 2 IoCs
Processes:
RegAsm.exedescription ioc process File created C:\Program Files (x86)\NAS Monitor\nasmon.exe RegAsm.exe File opened for modification C:\Program Files (x86)\NAS Monitor\nasmon.exe RegAsm.exe -
System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
schtasks.exeschtasks.exede168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exeRegAsm.exedescription ioc process 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 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 3112 schtasks.exe 4124 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
RegAsm.exepid process 1504 RegAsm.exe 1504 RegAsm.exe 1504 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegAsm.exepid process 1504 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 1504 RegAsm.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
Processes:
de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exepid process 952 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe 952 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe 952 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe -
Suspicious use of SendNotifyMessage 3 IoCs
Processes:
de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exepid process 952 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe 952 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe 952 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exeRegAsm.exedescription pid process target process PID 952 wrote to memory of 1504 952 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe RegAsm.exe PID 952 wrote to memory of 1504 952 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe RegAsm.exe PID 952 wrote to memory of 1504 952 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe RegAsm.exe PID 952 wrote to memory of 1504 952 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe RegAsm.exe PID 952 wrote to memory of 1504 952 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe RegAsm.exe PID 1504 wrote to memory of 3112 1504 RegAsm.exe schtasks.exe PID 1504 wrote to memory of 3112 1504 RegAsm.exe schtasks.exe PID 1504 wrote to memory of 3112 1504 RegAsm.exe schtasks.exe PID 1504 wrote to memory of 4124 1504 RegAsm.exe schtasks.exe PID 1504 wrote to memory of 4124 1504 RegAsm.exe schtasks.exe PID 1504 wrote to memory of 4124 1504 RegAsm.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe"C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "NAS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC975.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "NAS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC9C4.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
Network
MITRE ATT&CK Matrix ATT&CK v13
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
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C:\Users\Admin\AppData\Local\Temp\tmpC975.tmpFilesize
1KB
MD5c6f0625bf4c1cdfb699980c9243d3b22
SHA143de1fe580576935516327f17b5da0c656c72851
SHA2568dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA5129ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969
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C:\Users\Admin\AppData\Local\Temp\tmpC9C4.tmpFilesize
1KB
MD53144131f2fe1c35ad2aafff167a26f59
SHA1959879de38aed11bc08b7725500d2c8c953e80bf
SHA256d20aeda9cadd332268afc89cbee76f297b00f061bf69a2f558a8d7657e4c41d7
SHA51227a07c8f953cc4fde9ec348d3f5c4621ab56ff281b778bc7ac95dd808d5f0eea6969c5e4662efc00a6416c8bcf4d8e3892be5c99e603e36f8aa49d2a957206fb
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memory/952-5-0x0000000001000000-0x0000000001001000-memory.dmpFilesize
4KB
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memory/1504-1-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1504-6-0x0000000074102000-0x0000000074103000-memory.dmpFilesize
4KB
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memory/1504-7-0x0000000074100000-0x00000000746B1000-memory.dmpFilesize
5.7MB
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memory/1504-8-0x0000000074100000-0x00000000746B1000-memory.dmpFilesize
5.7MB
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memory/1504-19-0x0000000074102000-0x0000000074103000-memory.dmpFilesize
4KB
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memory/1504-20-0x0000000074100000-0x00000000746B1000-memory.dmpFilesize
5.7MB