Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
02-04-2023 23:56
Static task
static1
Behavioral task
behavioral1
Sample
a1ac8ab0e95b7c79a10324af32df0952.exe
Resource
win7-20230220-en
General
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Target
a1ac8ab0e95b7c79a10324af32df0952.exe
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Size
1.4MB
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MD5
a1ac8ab0e95b7c79a10324af32df0952
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SHA1
1a88885696ca7eebf5b7cd3aa4d8ebea2d278a10
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SHA256
15d081b3c1388f4ff2832fd1af4a85a3c540078ab3a89c44adb94a542353e0d2
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SHA512
76b90d2fffbd62c089465ae84ff777a2457dfa2144685e491dbb5db3dd31cf166a2d7cdd92d3fdf2d8ae0682c4ec5e1b73f09af05b54c1ae92412b2a87088528
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SSDEEP
24576:dA7LDMKOYac6idXy2xwO6cJ0qzaEOhm3Au5ZUYbqU2Kj5H:qMKO3cVMIwbcyIaEk9IH
Malware Config
Extracted
nanocore
1.2.2.0
moran101.duckdns.org:8050
moran007.duckdns.org:8050
d5018187-5a97-4cc3-ae3f-299e8dd0ae7e
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activate_away_mode
true
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backup_connection_host
moran007.duckdns.org
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backup_dns_server
moran101.duckdns.org
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buffer_size
65535
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build_time
2019-02-09T12:45:06.335786736Z
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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
8050
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default_group
Apr~30
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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
d5018187-5a97-4cc3-ae3f-299e8dd0ae7e
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
moran101.duckdns.org
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primary_dns_server
moran101.duckdns.org
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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
true
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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:
a1ac8ab0e95b7c79a10324af32df0952.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vbhtghbvfgh.url a1ac8ab0e95b7c79a10324af32df0952.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:
a1ac8ab0e95b7c79a10324af32df0952.exedescription pid process target process PID 2340 set thread context of 3360 2340 a1ac8ab0e95b7c79a10324af32df0952.exe RegAsm.exe -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
RegAsm.exepid process 3360 RegAsm.exe 3360 RegAsm.exe 3360 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegAsm.exepid process 3360 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 3360 RegAsm.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
Processes:
a1ac8ab0e95b7c79a10324af32df0952.exepid process 2340 a1ac8ab0e95b7c79a10324af32df0952.exe 2340 a1ac8ab0e95b7c79a10324af32df0952.exe 2340 a1ac8ab0e95b7c79a10324af32df0952.exe -
Suspicious use of SendNotifyMessage 3 IoCs
Processes:
a1ac8ab0e95b7c79a10324af32df0952.exepid process 2340 a1ac8ab0e95b7c79a10324af32df0952.exe 2340 a1ac8ab0e95b7c79a10324af32df0952.exe 2340 a1ac8ab0e95b7c79a10324af32df0952.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
a1ac8ab0e95b7c79a10324af32df0952.exeRegAsm.exedescription pid process target process PID 2340 wrote to memory of 3360 2340 a1ac8ab0e95b7c79a10324af32df0952.exe RegAsm.exe PID 2340 wrote to memory of 3360 2340 a1ac8ab0e95b7c79a10324af32df0952.exe RegAsm.exe PID 2340 wrote to memory of 3360 2340 a1ac8ab0e95b7c79a10324af32df0952.exe RegAsm.exe PID 2340 wrote to memory of 3360 2340 a1ac8ab0e95b7c79a10324af32df0952.exe RegAsm.exe PID 2340 wrote to memory of 3360 2340 a1ac8ab0e95b7c79a10324af32df0952.exe RegAsm.exe PID 3360 wrote to memory of 4360 3360 RegAsm.exe schtasks.exe PID 3360 wrote to memory of 4360 3360 RegAsm.exe schtasks.exe PID 3360 wrote to memory of 4360 3360 RegAsm.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a1ac8ab0e95b7c79a10324af32df0952.exe"C:\Users\Admin\AppData\Local\Temp\a1ac8ab0e95b7c79a10324af32df0952.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- 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⤵
- Checks whether UAC is enabled
- 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 "WAN Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp72F2.tmp"3⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp72F2.tmpFilesize
1KB
MD5c6f0625bf4c1cdfb699980c9243d3b22
SHA143de1fe580576935516327f17b5da0c656c72851
SHA2568dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA5129ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969
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memory/3360-133-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/3360-141-0x0000000000DF0000-0x0000000000E00000-memory.dmpFilesize
64KB
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memory/3360-146-0x0000000000DF0000-0x0000000000E00000-memory.dmpFilesize
64KB
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memory/3360-147-0x0000000000DF0000-0x0000000000E00000-memory.dmpFilesize
64KB
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memory/3360-148-0x0000000000DF0000-0x0000000000E00000-memory.dmpFilesize
64KB