Analysis
-
max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
05-11-2024 04:07
Static task
static1
Behavioral task
behavioral1
Sample
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe
Resource
win7-20240708-en
General
-
Target
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe
-
Size
767KB
-
MD5
1ee4aca2ed3fbc7d17f8a86c751c1cc2
-
SHA1
79fdfd56292f04c800afaa837b445e780355f3fb
-
SHA256
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80
-
SHA512
2aa63b5a446b06d0e1149935ab3ea4803d797355ae4ac092abd5c3e7395bc9bb1dcd56f4489b144bffea42c916f9b22be250a09fd22634ba8de04a054cb7a910
-
SSDEEP
12288:WAghZfmc9iuf6+U4yE4tbq8OzrO3D3GY76d0QQ9qUqkhwHGnpaU:bg/fz16+HyAziX700QQ9dqkhGsZ
Malware Config
Extracted
nanocore
1.2.2.0
66.63.187.113:1664
a376f716-2f77-4943-a431-3a3bcb53b7c0
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activate_away_mode
true
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backup_connection_host
66.63.187.113
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2024-08-05T03:49:33.827385136Z
-
bypass_user_account_control
false
-
bypass_user_account_control_data
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
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
1664
-
default_group
CAT
-
enable_debug_mode
true
-
gc_threshold
1.048576e+07
-
keep_alive_timeout
30000
-
keyboard_logging
false
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
-
mutex
a376f716-2f77-4943-a431-3a3bcb53b7c0
-
mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
66.63.187.113
-
primary_dns_server
8.8.8.8
-
request_elevation
true
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restart_delay
5000
-
run_delay
0
-
run_on_startup
false
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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
-
Nanocore family
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Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exedescription ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ARP Host = "C:\\Program Files (x86)\\ARP Host\\arphost.exe" a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe -
Processes:
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exedescription ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exedescription pid Process procid_target PID 3320 set thread context of 1436 3320 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 97 -
Drops file in Program Files directory 2 IoCs
Processes:
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exedescription ioc Process File created C:\Program Files (x86)\ARP Host\arphost.exe a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe File opened for modification C:\Program Files (x86)\ARP Host\arphost.exe a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exepowershell.exeschtasks.exeschtasks.exea920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.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 4344 schtasks.exe 1500 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
powershell.exea920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exepid Process 1028 powershell.exe 1028 powershell.exe 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exepid Process 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exea920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exedescription pid Process Token: SeDebugPrivilege 1028 powershell.exe Token: SeDebugPrivilege 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exea920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exedescription pid Process procid_target PID 3320 wrote to memory of 1028 3320 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 95 PID 3320 wrote to memory of 1028 3320 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 95 PID 3320 wrote to memory of 1028 3320 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 95 PID 3320 wrote to memory of 1436 3320 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 97 PID 3320 wrote to memory of 1436 3320 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 97 PID 3320 wrote to memory of 1436 3320 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 97 PID 3320 wrote to memory of 1436 3320 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 97 PID 3320 wrote to memory of 1436 3320 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 97 PID 3320 wrote to memory of 1436 3320 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 97 PID 3320 wrote to memory of 1436 3320 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 97 PID 3320 wrote to memory of 1436 3320 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 97 PID 1436 wrote to memory of 1500 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 98 PID 1436 wrote to memory of 1500 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 98 PID 1436 wrote to memory of 1500 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 98 PID 1436 wrote to memory of 4344 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 100 PID 1436 wrote to memory of 4344 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 100 PID 1436 wrote to memory of 4344 1436 a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe 100
Processes
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C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe"C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3320 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1028
-
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C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.exe"C:\Users\Admin\AppData\Local\Temp\a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80.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
PID:1436 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "ARP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFF40.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1500
-
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "ARP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp89.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:4344
-
-
Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
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
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5447ab194ab36cb1d20078d80e502b1b2
SHA1a947b3b2c91d7c50bb8d39bd4fc91a0d0cc5b1c0
SHA2568d5304b20b7d7dea223ce2738e5668054250d57bf6bed86b305b69924bd472f5
SHA51249ddc557f7f6635627eea9bf0fa12a14b7b13edb235ed560ee0044a7f87fe27b686ff878d347d0273d92eb0b318b8c2bca85c0fbf42d586ed7d7da39eac6a327
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Filesize
1KB
MD56b8b04c891e2c91ec6d6f4360d0d3a12
SHA178d40859e9240ac3fb07ee3424f717ce9c89de82
SHA25635fdc7656cb3f0270979d618d8ecd50b4f2325652dd2c476b9d727207b6e4dae
SHA512998d0b637ffe6f110fcbf29a28c7d73a83de4b2f35c1ced4a0ac00032922c7e88ea9656de46f2522373bd5a671a92e9d7be46d8a080becc47ac5be4cbae05ceb