Analysis
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max time kernel
118s -
max time network
121s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
06-08-2024 23:41
Static task
static1
Behavioral task
behavioral1
Sample
2c1376fb9240ce381d3b75e109312c20N.exe
Resource
win7-20240708-en
General
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Target
2c1376fb9240ce381d3b75e109312c20N.exe
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Size
1.2MB
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MD5
2c1376fb9240ce381d3b75e109312c20
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SHA1
40ea25d58f4efd811fa9f9f79da1b5dbf4b130a6
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SHA256
9461a944529d860e0be6f7772acbad8252983cb4714998a7c39dc901bc916269
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SHA512
cf0085534255573768c543bfb7a34a98df86748f12523dd3836c78230ed7c27959e4819f68978b45781def93d4a8d9819ed5427c0ae036913fc5cbc7a3932dd8
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SSDEEP
24576:XAHnh+eWsN3skA4RV1Hom2KXMmHatoI3fr6j2/2+n/a5s:Kh+ZkldoPK8YatoMYs
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:
2c1376fb9240ce381d3b75e109312c20N.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url 2c1376fb9240ce381d3b75e109312c20N.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:
2c1376fb9240ce381d3b75e109312c20N.exedescription pid process target process PID 3316 set thread context of 2428 3316 2c1376fb9240ce381d3b75e109312c20N.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.exe2c1376fb9240ce381d3b75e109312c20N.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 2c1376fb9240ce381d3b75e109312c20N.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 2944 schtasks.exe 3832 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
RegAsm.exepid process 2428 RegAsm.exe 2428 RegAsm.exe 2428 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegAsm.exepid process 2428 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 2428 RegAsm.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
Processes:
2c1376fb9240ce381d3b75e109312c20N.exepid process 3316 2c1376fb9240ce381d3b75e109312c20N.exe 3316 2c1376fb9240ce381d3b75e109312c20N.exe 3316 2c1376fb9240ce381d3b75e109312c20N.exe -
Suspicious use of SendNotifyMessage 3 IoCs
Processes:
2c1376fb9240ce381d3b75e109312c20N.exepid process 3316 2c1376fb9240ce381d3b75e109312c20N.exe 3316 2c1376fb9240ce381d3b75e109312c20N.exe 3316 2c1376fb9240ce381d3b75e109312c20N.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
2c1376fb9240ce381d3b75e109312c20N.exeRegAsm.exedescription pid process target process PID 3316 wrote to memory of 2428 3316 2c1376fb9240ce381d3b75e109312c20N.exe RegAsm.exe PID 3316 wrote to memory of 2428 3316 2c1376fb9240ce381d3b75e109312c20N.exe RegAsm.exe PID 3316 wrote to memory of 2428 3316 2c1376fb9240ce381d3b75e109312c20N.exe RegAsm.exe PID 3316 wrote to memory of 2428 3316 2c1376fb9240ce381d3b75e109312c20N.exe RegAsm.exe PID 3316 wrote to memory of 2428 3316 2c1376fb9240ce381d3b75e109312c20N.exe RegAsm.exe PID 2428 wrote to memory of 2944 2428 RegAsm.exe schtasks.exe PID 2428 wrote to memory of 2944 2428 RegAsm.exe schtasks.exe PID 2428 wrote to memory of 2944 2428 RegAsm.exe schtasks.exe PID 2428 wrote to memory of 3832 2428 RegAsm.exe schtasks.exe PID 2428 wrote to memory of 3832 2428 RegAsm.exe schtasks.exe PID 2428 wrote to memory of 3832 2428 RegAsm.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2c1376fb9240ce381d3b75e109312c20N.exe"C:\Users\Admin\AppData\Local\Temp\2c1376fb9240ce381d3b75e109312c20N.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
PID:3316 -
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
PID:2428 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "NAS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp59D0.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2944 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "NAS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5A0F.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:3832
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
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Filesize
1KB
MD5c6f0625bf4c1cdfb699980c9243d3b22
SHA143de1fe580576935516327f17b5da0c656c72851
SHA2568dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA5129ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969
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Filesize
1KB
MD53144131f2fe1c35ad2aafff167a26f59
SHA1959879de38aed11bc08b7725500d2c8c953e80bf
SHA256d20aeda9cadd332268afc89cbee76f297b00f061bf69a2f558a8d7657e4c41d7
SHA51227a07c8f953cc4fde9ec348d3f5c4621ab56ff281b778bc7ac95dd808d5f0eea6969c5e4662efc00a6416c8bcf4d8e3892be5c99e603e36f8aa49d2a957206fb