Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 18:42
Static task
static1
Behavioral task
behavioral1
Sample
PO5152020.exe
Resource
win7-20220414-en
General
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Target
PO5152020.exe
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Size
1.3MB
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MD5
afb6ed621fad9d4a99bce12987b78d00
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SHA1
4d1551ba64bebac324db29a1250841fedcca8aeb
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SHA256
d8f928260e00eccacabddc01c6d5580f8cf009f0236067d0353ceb54e9f6baf4
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SHA512
0bb3c2926c5f9d5cd2144996535ba2abe8c8470802025e5c3520a9bde4da4c719e895ece63e5e8b42743f9e5d09f12856361a8e5db042c482a3acce7387b148d
Malware Config
Extracted
nanocore
1.2.2.0
185.244.29.132:1985
127.0.0.1:1985
f61bbd75-d4b8-4ea7-be06-9084282264d7
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activate_away_mode
true
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backup_connection_host
127.0.0.1
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2020-02-21T01:06:21.461976936Z
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bypass_user_account_control
false
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bypass_user_account_control_data
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+
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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
1985
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default_group
Scarface
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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
f61bbd75-d4b8-4ea7-be06-9084282264d7
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
185.244.29.132
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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
false
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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:
PO5152020.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\appidpolicyconverter.url PO5152020.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
MSBuild.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Service = "C:\\Program Files (x86)\\WPA Service\\wpasv.exe" MSBuild.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
PO5152020.exedescription pid process target process PID 4648 set thread context of 2356 4648 PO5152020.exe MSBuild.exe -
Drops file in Program Files directory 2 IoCs
Processes:
MSBuild.exedescription ioc process File created C:\Program Files (x86)\WPA Service\wpasv.exe MSBuild.exe File opened for modification C:\Program Files (x86)\WPA Service\wpasv.exe MSBuild.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 29 IoCs
Processes:
MSBuild.exePO5152020.exepid process 2356 MSBuild.exe 2356 MSBuild.exe 2356 MSBuild.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
MSBuild.exepid process 2356 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
MSBuild.exedescription pid process Token: SeDebugPrivilege 2356 MSBuild.exe Token: SeDebugPrivilege 2356 MSBuild.exe -
Suspicious use of FindShellTrayWindow 4 IoCs
Processes:
PO5152020.exepid process 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe -
Suspicious use of SendNotifyMessage 4 IoCs
Processes:
PO5152020.exepid process 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe 4648 PO5152020.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
PO5152020.exeMSBuild.exedescription pid process target process PID 4648 wrote to memory of 2356 4648 PO5152020.exe MSBuild.exe PID 4648 wrote to memory of 2356 4648 PO5152020.exe MSBuild.exe PID 4648 wrote to memory of 2356 4648 PO5152020.exe MSBuild.exe PID 4648 wrote to memory of 2356 4648 PO5152020.exe MSBuild.exe PID 4648 wrote to memory of 2356 4648 PO5152020.exe MSBuild.exe PID 2356 wrote to memory of 4880 2356 MSBuild.exe schtasks.exe PID 2356 wrote to memory of 4880 2356 MSBuild.exe schtasks.exe PID 2356 wrote to memory of 4880 2356 MSBuild.exe schtasks.exe PID 2356 wrote to memory of 316 2356 MSBuild.exe schtasks.exe PID 2356 wrote to memory of 316 2356 MSBuild.exe schtasks.exe PID 2356 wrote to memory of 316 2356 MSBuild.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PO5152020.exe"C:\Users\Admin\AppData\Local\Temp\PO5152020.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\MSBuild.exe"2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- 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 "WPA Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3A1B.tmp"3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "WPA Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3DB6.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\tmp3A1B.tmpFilesize
1KB
MD5ae766004c0d8792953bafffe8f6a2e3b
SHA114b12f27543a401e2fe0af8052e116cab0032426
SHA2561abdd9b6a6b84e4ba1af1282dc84ce276c59ba253f4c4af05fea498a4fd99540
SHA512e530da4a5d4336fc37838d0e93b5eb3804b9c489c71f6954a47fc81a4c655bb72ec493e109cf96e6e3617d7623ac80697ad3bbd5ffc6281bafc8b34dca5e6567
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C:\Users\Admin\AppData\Local\Temp\tmp3DB6.tmpFilesize
1KB
MD521de6c3a6440d917bdbb4b491191d9b2
SHA1c63c300affe7147910dc4544d2d5f3029bf321a6
SHA25623af17733a3882cdd82a5bbc321d896b2430dc1bb4b4ac034d129cde5027afc4
SHA512dcd1c464ed36593b990e072940ab415804ef8076743015fff4939211e30e436beb7ce6af3072769abe0214f737cedb210d2b45e6e90da20dac54c3945b11575f
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memory/316-141-0x0000000000000000-mapping.dmp
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memory/2356-130-0x0000000000000000-mapping.dmp
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memory/2356-131-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2356-138-0x0000000073E70000-0x0000000074421000-memory.dmpFilesize
5.7MB
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memory/4648-136-0x0000000003C80000-0x0000000003CE6000-memory.dmpFilesize
408KB
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memory/4648-137-0x0000000003E40000-0x0000000003EA6000-memory.dmpFilesize
408KB
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memory/4880-139-0x0000000000000000-mapping.dmp