Analysis
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max time kernel
142s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
26-12-2024 15:40
Static task
static1
Behavioral task
behavioral1
Sample
04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe
Resource
win7-20240903-en
General
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Target
04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe
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Size
416KB
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MD5
9a053bdd101822ef22da12f1599bc851
-
SHA1
d15f7bce51bafba6b7b029a0820e15d0a7f60813
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SHA256
04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a
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SHA512
d36fd6aee178185f5490822befbad3f7690daa2d321e789c07ab7c9cd7dc9c9bfcf6b62b9c862b95da1e4ac787de84e94e37acc27c3896f7a9dad3d44426ea4b
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SSDEEP
6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7P:ITNYrnE3bm/CiejewY5vg
Malware Config
Extracted
nanocore
1.2.2.0
4af74541-e3f1-469c-8af7-efe4071b81cf
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activate_away_mode
false
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backup_connection_host
178.32.224.116
- backup_dns_server
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buffer_size
65535
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build_time
2018-07-28T12:59:38.488799236Z
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bypass_user_account_control
true
- bypass_user_account_control_data
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clear_access_control
false
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clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
46218
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default_group
tourex
-
enable_debug_mode
true
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gc_threshold
1.048576e+07
-
keep_alive_timeout
30000
-
keyboard_logging
false
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lan_timeout
2500
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max_packet_size
1.048576e+07
-
mutex
4af74541-e3f1-469c-8af7-efe4071b81cf
-
mutex_timeout
5000
-
prevent_system_sleep
false
- primary_connection_host
- primary_dns_server
-
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
-
version
1.2.2.0
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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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation 04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe -
Executes dropped EXE 1 IoCs
pid Process 544 ximo2ubzn1i.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe" 04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA regasm.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 544 set thread context of 4312 544 ximo2ubzn1i.exe 84 -
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 04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ximo2ubzn1i.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regasm.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 4312 regasm.exe 4312 regasm.exe 4312 regasm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4312 regasm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4312 regasm.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 4028 wrote to memory of 544 4028 04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe 83 PID 4028 wrote to memory of 544 4028 04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe 83 PID 4028 wrote to memory of 544 4028 04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe 83 PID 544 wrote to memory of 4312 544 ximo2ubzn1i.exe 84 PID 544 wrote to memory of 4312 544 ximo2ubzn1i.exe 84 PID 544 wrote to memory of 4312 544 ximo2ubzn1i.exe 84 PID 544 wrote to memory of 4312 544 ximo2ubzn1i.exe 84 PID 544 wrote to memory of 4312 544 ximo2ubzn1i.exe 84 PID 544 wrote to memory of 4312 544 ximo2ubzn1i.exe 84 PID 544 wrote to memory of 4312 544 ximo2ubzn1i.exe 84 PID 544 wrote to memory of 4312 544 ximo2ubzn1i.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe"C:\Users\Admin\AppData\Local\Temp\04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4028 -
C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:544 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"3⤵
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:4312
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
416KB
MD5926d91ba718376bc13e15848c29bbb54
SHA1442ff6fb8ca7d78c2d9ee97cf53c8dd3eafc7019
SHA256f5a8c09d49153b3424f0cd5f9ab45cf2f4899746b39025a47043c3314f2cfaab
SHA512cf6a494ed78533926085100b36798cd2d9160d39868a8f17f74140c43c62bc9753cd4faeb6944fec8ebe72c934265a463b6137c8def192ad6e58778a3c6d6625