Analysis
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max time kernel
119s -
max time network
102s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
15-08-2024 03:23
Static task
static1
Behavioral task
behavioral1
Sample
bb936870fe8af1aefa1eec876801cae0N.exe
Resource
win7-20240708-en
General
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Target
bb936870fe8af1aefa1eec876801cae0N.exe
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Size
281KB
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MD5
bb936870fe8af1aefa1eec876801cae0
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SHA1
7cb2ae9a76cadb344075b19087ed27c9ef983b73
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SHA256
c3a0cddf3cb0389fdd9c8029f3dc4638f511b93950c56fb811310987b51ee901
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SHA512
ff863e20775f66dfacc4e2e59b924bdf5482c89a763c9f6674ed502ff9214e9aebc53e43d3ce1237cbe5fe01874b9e7b8c51552b67cbacae87c755d929da8974
-
SSDEEP
6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfe:boSeGUA5YZazpXUmZhZ6S7
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
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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
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
45400
-
default_group
Default
-
enable_debug_mode
true
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gc_threshold
1.048576e+07
-
keep_alive_timeout
30000
-
keyboard_logging
false
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
-
mutex
ae82ab7f-db07-49ee-9d2b-76075d76f37f
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
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
-
use_custom_dns_server
false
-
version
1.2.2.0
-
wan_timeout
8000
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
bb936870fe8af1aefa1eec876801cae0N.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation bb936870fe8af1aefa1eec876801cae0N.exe -
Executes dropped EXE 2 IoCs
Processes:
a1punf5t2of.exea1punf5t2of.exepid process 4012 a1punf5t2of.exe 4292 a1punf5t2of.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
bb936870fe8af1aefa1eec876801cae0N.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" bb936870fe8af1aefa1eec876801cae0N.exe -
Processes:
a1punf5t2of.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA a1punf5t2of.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
a1punf5t2of.exedescription pid process target process PID 4012 set thread context of 4292 4012 a1punf5t2of.exe a1punf5t2of.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
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.
Processes:
bb936870fe8af1aefa1eec876801cae0N.exea1punf5t2of.exea1punf5t2of.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language bb936870fe8af1aefa1eec876801cae0N.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
Processes:
a1punf5t2of.exepid process 4292 a1punf5t2of.exe 4292 a1punf5t2of.exe 4292 a1punf5t2of.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
a1punf5t2of.exepid process 4292 a1punf5t2of.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
a1punf5t2of.exedescription pid process Token: SeDebugPrivilege 4292 a1punf5t2of.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
bb936870fe8af1aefa1eec876801cae0N.exea1punf5t2of.exedescription pid process target process PID 3436 wrote to memory of 4012 3436 bb936870fe8af1aefa1eec876801cae0N.exe a1punf5t2of.exe PID 3436 wrote to memory of 4012 3436 bb936870fe8af1aefa1eec876801cae0N.exe a1punf5t2of.exe PID 3436 wrote to memory of 4012 3436 bb936870fe8af1aefa1eec876801cae0N.exe a1punf5t2of.exe PID 4012 wrote to memory of 4292 4012 a1punf5t2of.exe a1punf5t2of.exe PID 4012 wrote to memory of 4292 4012 a1punf5t2of.exe a1punf5t2of.exe PID 4012 wrote to memory of 4292 4012 a1punf5t2of.exe a1punf5t2of.exe PID 4012 wrote to memory of 4292 4012 a1punf5t2of.exe a1punf5t2of.exe PID 4012 wrote to memory of 4292 4012 a1punf5t2of.exe a1punf5t2of.exe PID 4012 wrote to memory of 4292 4012 a1punf5t2of.exe a1punf5t2of.exe PID 4012 wrote to memory of 4292 4012 a1punf5t2of.exe a1punf5t2of.exe PID 4012 wrote to memory of 4292 4012 a1punf5t2of.exe a1punf5t2of.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\bb936870fe8af1aefa1eec876801cae0N.exe"C:\Users\Admin\AppData\Local\Temp\bb936870fe8af1aefa1eec876801cae0N.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3436 -
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:4012 -
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:4292
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
282KB
MD587df6a89c07b0493486309a000dbbc34
SHA197d1414c53c4737ae6ad2e8765337fbc4665f529
SHA2564d7dec1e7f62e338e0b820e8e7c73b94029627663628430e22c7f355b30641a0
SHA512fac28cf07ea5f1827ed55a9ffff21f5af8885020653273b6c347a27583e7a6ee58e7317f0ccf605983651ce893f7e052a66a16d2bef66b38469b7bb19a9efaa3