Analysis
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max time kernel
140s -
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
13-08-2024 22:31
Static task
static1
Behavioral task
behavioral1
Sample
93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe
Resource
win7-20240704-en
General
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Target
93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe
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Size
1.2MB
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MD5
7ed6d273bf014851e0ea83f298b15f6e
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SHA1
b843e719a8e4985d26257850363ce02d130b312d
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SHA256
93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d
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SHA512
d7ae99f196eab169fcebae96a6cd68978e879d337dd1be95b242b753f6d8a8c3e28fa5b20a90c38fab8f8f24cfe3fe605d8289f827b5836fd783d3e5a3918fc3
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SSDEEP
24576:XAHnh+eWsN3skA4RV1Hom2KXMmHatoI3fr6j2/2+n/a5B:Kh+ZkldoPK8YatoMYB
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:
93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.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\DNS Monitor = "C:\\Program Files (x86)\\DNS Monitor\\dnsmon.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:
93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exedescription pid process target process PID 3904 set thread context of 4832 3904 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe RegAsm.exe -
Drops file in Program Files directory 2 IoCs
Processes:
RegAsm.exedescription ioc process File created C:\Program Files (x86)\DNS Monitor\dnsmon.exe RegAsm.exe File opened for modification C:\Program Files (x86)\DNS Monitor\dnsmon.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:
93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exeRegAsm.exeschtasks.exeschtasks.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.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 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 760 schtasks.exe 4924 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
RegAsm.exepid process 4832 RegAsm.exe 4832 RegAsm.exe 4832 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegAsm.exepid process 4832 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 4832 RegAsm.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
Processes:
93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exepid process 3904 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe 3904 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe 3904 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe -
Suspicious use of SendNotifyMessage 3 IoCs
Processes:
93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exepid process 3904 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe 3904 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe 3904 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exeRegAsm.exedescription pid process target process PID 3904 wrote to memory of 4832 3904 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe RegAsm.exe PID 3904 wrote to memory of 4832 3904 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe RegAsm.exe PID 3904 wrote to memory of 4832 3904 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe RegAsm.exe PID 3904 wrote to memory of 4832 3904 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe RegAsm.exe PID 3904 wrote to memory of 4832 3904 93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe RegAsm.exe PID 4832 wrote to memory of 760 4832 RegAsm.exe schtasks.exe PID 4832 wrote to memory of 760 4832 RegAsm.exe schtasks.exe PID 4832 wrote to memory of 760 4832 RegAsm.exe schtasks.exe PID 4832 wrote to memory of 4924 4832 RegAsm.exe schtasks.exe PID 4832 wrote to memory of 4924 4832 RegAsm.exe schtasks.exe PID 4832 wrote to memory of 4924 4832 RegAsm.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.exe"C:\Users\Admin\AppData\Local\Temp\93dca55303be7695ef1bd5347fe6f9ad727bf90b46e688796465569ada325d7d.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:3904 -
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:4832 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DNS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE579.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:760 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DNS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE5D8.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:4924
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
MD57620b805f7bc12c79e126656c858d0e0
SHA189f09b8b4ef1fc421ddf5ed0cbbe012fab7fd666
SHA2564d6ea014d135bdc4a5fd4281ce705672561b0279deab4302e06cbfe95e1080a6
SHA512b02ac735c98b20020251a23ffa1b0308ad3a1c99593a15a8020d742472b0d5c36caa31c6ca2372e88cfd3b6792206ea7920162c2a33c83da24f0098c0513f562