Analysis
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max time kernel
119s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
03-08-2024 23:59
Static task
static1
Behavioral task
behavioral1
Sample
db05ec611bed33e7f3dfe902c0836de0N.exe
Resource
win7-20240705-en
General
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Target
db05ec611bed33e7f3dfe902c0836de0N.exe
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Size
1.2MB
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MD5
db05ec611bed33e7f3dfe902c0836de0
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SHA1
c7f708a2ee9fdac10dcaf724d45cd8a1322e8414
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SHA256
1e70f17af50aab8d647a3b3b42eff82cd9404f3f8ef38b9d0dc7b1e7eef0a21f
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SHA512
c5dc2465ad4960bdfa59cc56cfe790583e7dedc69afff48bc698e7e81197ef8794857ac0fada5d17ff9bae779c3034c69ca4a0370da0a8d87e6be983c468798c
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SSDEEP
24576:XAHnh+eWsN3skA4RV1Hom2KXMmHatoI3fr6j2/2+n/a5W:Kh+ZkldoPK8YatoMYW
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:
db05ec611bed33e7f3dfe902c0836de0N.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url db05ec611bed33e7f3dfe902c0836de0N.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\DSL Service = "C:\\Program Files (x86)\\DSL Service\\dslsv.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:
db05ec611bed33e7f3dfe902c0836de0N.exedescription pid process target process PID 2540 set thread context of 2740 2540 db05ec611bed33e7f3dfe902c0836de0N.exe RegAsm.exe -
Drops file in Program Files directory 2 IoCs
Processes:
RegAsm.exedescription ioc process File created C:\Program Files (x86)\DSL Service\dslsv.exe RegAsm.exe File opened for modification C:\Program Files (x86)\DSL Service\dslsv.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.exedb05ec611bed33e7f3dfe902c0836de0N.exeRegAsm.exeschtasks.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language db05ec611bed33e7f3dfe902c0836de0N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.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 2640 schtasks.exe 2800 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
RegAsm.exepid process 2740 RegAsm.exe 2740 RegAsm.exe 2740 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegAsm.exepid process 2740 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 2740 RegAsm.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
Processes:
db05ec611bed33e7f3dfe902c0836de0N.exepid process 2540 db05ec611bed33e7f3dfe902c0836de0N.exe 2540 db05ec611bed33e7f3dfe902c0836de0N.exe 2540 db05ec611bed33e7f3dfe902c0836de0N.exe -
Suspicious use of SendNotifyMessage 3 IoCs
Processes:
db05ec611bed33e7f3dfe902c0836de0N.exepid process 2540 db05ec611bed33e7f3dfe902c0836de0N.exe 2540 db05ec611bed33e7f3dfe902c0836de0N.exe 2540 db05ec611bed33e7f3dfe902c0836de0N.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
db05ec611bed33e7f3dfe902c0836de0N.exeRegAsm.exedescription pid process target process PID 2540 wrote to memory of 2740 2540 db05ec611bed33e7f3dfe902c0836de0N.exe RegAsm.exe PID 2540 wrote to memory of 2740 2540 db05ec611bed33e7f3dfe902c0836de0N.exe RegAsm.exe PID 2540 wrote to memory of 2740 2540 db05ec611bed33e7f3dfe902c0836de0N.exe RegAsm.exe PID 2540 wrote to memory of 2740 2540 db05ec611bed33e7f3dfe902c0836de0N.exe RegAsm.exe PID 2540 wrote to memory of 2740 2540 db05ec611bed33e7f3dfe902c0836de0N.exe RegAsm.exe PID 2540 wrote to memory of 2740 2540 db05ec611bed33e7f3dfe902c0836de0N.exe RegAsm.exe PID 2540 wrote to memory of 2740 2540 db05ec611bed33e7f3dfe902c0836de0N.exe RegAsm.exe PID 2540 wrote to memory of 2740 2540 db05ec611bed33e7f3dfe902c0836de0N.exe RegAsm.exe PID 2540 wrote to memory of 2740 2540 db05ec611bed33e7f3dfe902c0836de0N.exe RegAsm.exe PID 2740 wrote to memory of 2800 2740 RegAsm.exe schtasks.exe PID 2740 wrote to memory of 2800 2740 RegAsm.exe schtasks.exe PID 2740 wrote to memory of 2800 2740 RegAsm.exe schtasks.exe PID 2740 wrote to memory of 2800 2740 RegAsm.exe schtasks.exe PID 2740 wrote to memory of 2640 2740 RegAsm.exe schtasks.exe PID 2740 wrote to memory of 2640 2740 RegAsm.exe schtasks.exe PID 2740 wrote to memory of 2640 2740 RegAsm.exe schtasks.exe PID 2740 wrote to memory of 2640 2740 RegAsm.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\db05ec611bed33e7f3dfe902c0836de0N.exe"C:\Users\Admin\AppData\Local\Temp\db05ec611bed33e7f3dfe902c0836de0N.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 "DSL Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDF67.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 "DSL Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDFD5.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\tmpDF67.tmpFilesize
1KB
MD5c6f0625bf4c1cdfb699980c9243d3b22
SHA143de1fe580576935516327f17b5da0c656c72851
SHA2568dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA5129ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969
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C:\Users\Admin\AppData\Local\Temp\tmpDFD5.tmpFilesize
1KB
MD5afb71a33ece3758f782f052bbe5da94f
SHA1e69b9070ff52f81fdf01a40f775d021e4b4e71e4
SHA256abd73bfca8458750ee751d4c6c106d54dcf0969592f476acc64ab0d7f2bb1978
SHA51222c45992ca358ca9d4605ac426b65903b11b27db1b9c608739245dc412aa256d0908566626b3cfdafb32fca0809bf46c8824ab98cea7b7662216c915e6ef013f
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memory/2540-0-0x0000000000120000-0x0000000000121000-memory.dmpFilesize
4KB
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memory/2740-1-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2740-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmpFilesize
4KB
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memory/2740-9-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2740-8-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2740-2-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2740-10-0x0000000073ED2000-0x0000000073ED4000-memory.dmpFilesize
8KB
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memory/2740-21-0x0000000073ED2000-0x0000000073ED4000-memory.dmpFilesize
8KB