Analysis
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max time kernel
148s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
25/01/2025, 22:58
Static task
static1
Behavioral task
behavioral1
Sample
5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe
Resource
win10v2004-20241007-en
General
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Target
5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe
-
Size
280KB
-
MD5
9eba144eb34351954d5cb58220c7c72c
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SHA1
94d629fae72f9e251a30281cb0838af086107a44
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SHA256
5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d
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SHA512
f14c59e4bb494093da204344e5c55ad8ea7cd3e1260fb0083b258b3e1ffa3a94d55e02ba7bf9e449dcb5378044c49d7694f63a595c4dcd5fe1dc51db0ae696d3
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SSDEEP
6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fb:boSeGUA5YZazpXUmZhZ6T
Malware Config
Extracted
nanocore
1.2.2.0
sysupdate24.ddns.net:45400
ae82ab7f-db07-49ee-9d2b-76075d76f37f
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activate_away_mode
true
- backup_connection_host
- backup_dns_server
-
buffer_size
65535
-
build_time
2020-04-24T17:41:53.492468936Z
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bypass_user_account_control
true
- bypass_user_account_control_data
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clear_access_control
true
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clear_zone_identifier
false
-
connect_delay
4000
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connection_port
45400
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default_group
Default
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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
ae82ab7f-db07-49ee-9d2b-76075d76f37f
-
mutex_timeout
5000
-
prevent_system_sleep
false
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primary_connection_host
sysupdate24.ddns.net
- primary_dns_server
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request_elevation
true
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restart_delay
5000
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run_delay
0
-
run_on_startup
true
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set_critical_process
true
-
timeout_interval
5000
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use_custom_dns_server
false
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version
1.2.2.0
-
wan_timeout
8000
Signatures
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Nanocore family
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation 5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe -
Executes dropped EXE 2 IoCs
pid Process 2612 a1punf5t2of.exe 4044 a1punf5t2of.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" 5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe -
Checks whether UAC is enabled 1 TTPs 1 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA a1punf5t2of.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2612 set thread context of 4044 2612 a1punf5t2of.exe 97 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a1punf5t2of.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a1punf5t2of.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 4044 a1punf5t2of.exe 4044 a1punf5t2of.exe 4044 a1punf5t2of.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4044 a1punf5t2of.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4044 a1punf5t2of.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 3192 wrote to memory of 2612 3192 5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe 87 PID 3192 wrote to memory of 2612 3192 5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe 87 PID 3192 wrote to memory of 2612 3192 5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe 87 PID 2612 wrote to memory of 4044 2612 a1punf5t2of.exe 97 PID 2612 wrote to memory of 4044 2612 a1punf5t2of.exe 97 PID 2612 wrote to memory of 4044 2612 a1punf5t2of.exe 97 PID 2612 wrote to memory of 4044 2612 a1punf5t2of.exe 97 PID 2612 wrote to memory of 4044 2612 a1punf5t2of.exe 97 PID 2612 wrote to memory of 4044 2612 a1punf5t2of.exe 97 PID 2612 wrote to memory of 4044 2612 a1punf5t2of.exe 97 PID 2612 wrote to memory of 4044 2612 a1punf5t2of.exe 97
Processes
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C:\Users\Admin\AppData\Local\Temp\5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe"C:\Users\Admin\AppData\Local\Temp\5367a32045767b8af7e9bdcb26ce5589be82f4df2bae6c54c8f632fbbd48e51d.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3192 -
C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2612 -
C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"3⤵
- Executes dropped EXE
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:4044
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
280KB
MD54568aae9f054bcd65680a622ffabfac0
SHA1e1e6512deca7f0f3dd3a1a4b1c4420af533a6269
SHA2560fc61f25109a97da18f6b2f3cb19318622def3867fd040bd0a1c18e585837ec6
SHA5124eafd8169b0a614f951b0db0c7d745d7aa1250c981794deece8904138ba04a53623e87d049d8df63a40ce7dd43ecde31817aed82a16d287be0de3ce19c9d4413