Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
12-05-2024 03:30
Static task
static1
Behavioral task
behavioral1
Sample
3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe
Resource
win7-20240508-en
General
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Target
3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe
-
Size
1.2MB
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MD5
3807e4ae42bd9184d9f7bc3d926f5290
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SHA1
d63ef9b69b737bde66e0237ee74e221d90871e11
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SHA256
3a919be1390be212157df026e57dd86dff2045a19db656409a2b182efa2da0ca
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SHA512
cfc69b4318cb6302058a649dd046edf1d8136455e0974321ce9f9143371b4644f19c869aa1274a1b0e614756b4a5799ad3054fab9bbba28c31b61df451268f6a
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SSDEEP
24576:9AHnh+eWsN3skA4RV1Hom2KXMmHaFNthlZaA9l+DgAYUuBlgYBb5:ch+ZkldoPK8YaFNtAA0gAuBeYz
Malware Config
Extracted
nanocore
1.2.2.0
sebaseuro.duckdns.org:2551
8f5c185e-f0b8-41e6-8b25-f1cf20c11229
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activate_away_mode
true
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backup_connection_host
sebaseuro.duckdns.org
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2019-04-08T02:58:41.493501336Z
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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
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connect_delay
4000
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connection_port
2551
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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
8f5c185e-f0b8-41e6-8b25-f1cf20c11229
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mutex_timeout
5000
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prevent_system_sleep
false
- primary_connection_host
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primary_dns_server
8.8.8.8
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request_elevation
true
-
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
true
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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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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exeRegAsm.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\tDucVbEYPm = "C:\\Users\\Public\\tDucVbEYPm.vbs" 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Service = "C:\\Program Files (x86)\\DHCP Service\\dhcpsv.exe" RegAsm.exe -
Processes:
RegAsm.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exedescription pid process target process PID 2264 set thread context of 4824 2264 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe RegAsm.exe -
Drops file in Program Files directory 2 IoCs
Processes:
RegAsm.exedescription ioc process File created C:\Program Files (x86)\DHCP Service\dhcpsv.exe RegAsm.exe File opened for modification C:\Program Files (x86)\DHCP Service\dhcpsv.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
RegAsm.exepid process 4824 RegAsm.exe 4824 RegAsm.exe 4824 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegAsm.exepid process 4824 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 4824 RegAsm.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
Processes:
3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exepid process 2264 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe 2264 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe 2264 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe -
Suspicious use of SendNotifyMessage 3 IoCs
Processes:
3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exepid process 2264 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe 2264 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe 2264 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exedescription pid process target process PID 2264 wrote to memory of 4824 2264 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe RegAsm.exe PID 2264 wrote to memory of 4824 2264 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe RegAsm.exe PID 2264 wrote to memory of 4824 2264 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe RegAsm.exe PID 2264 wrote to memory of 4824 2264 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe RegAsm.exe PID 2264 wrote to memory of 4824 2264 3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\3807e4ae42bd9184d9f7bc3d926f5290_JaffaCakes118.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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memory/2264-7-0x0000000004B50000-0x0000000004B51000-memory.dmpFilesize
4KB
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memory/4824-3-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/4824-8-0x0000000075502000-0x0000000075503000-memory.dmpFilesize
4KB
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memory/4824-9-0x0000000075500000-0x0000000075AB1000-memory.dmpFilesize
5.7MB
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memory/4824-10-0x0000000075500000-0x0000000075AB1000-memory.dmpFilesize
5.7MB
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memory/4824-13-0x0000000075502000-0x0000000075503000-memory.dmpFilesize
4KB
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memory/4824-14-0x0000000075500000-0x0000000075AB1000-memory.dmpFilesize
5.7MB