Analysis
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max time kernel
146s -
max time network
146s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
30-05-2024 04:59
Static task
static1
Behavioral task
behavioral1
Sample
83194808dedca5774eb592aa86273131_JaffaCakes118.exe
Resource
win7-20240220-en
General
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Target
83194808dedca5774eb592aa86273131_JaffaCakes118.exe
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Size
1.2MB
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MD5
83194808dedca5774eb592aa86273131
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SHA1
af499f573d3c7dd22a5c14158d79f544d6803285
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SHA256
3d6582a55706bebac0c7cb5ee60ede652456501a3b08aae48723227809ce3fc9
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SHA512
3b20f5c293d9eaa1c7d47667afb25999e6daacb3fe22b4b14e19fefc029cd7a3ec2b0fb715f252b9db5d951d0b98985da9fe7b6347a555c78a283a23245a6f45
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SSDEEP
24576:Fu6Jx3O0c+JY5UZ+XC0kGso/Wa9BBUe+ikjfeV6rWY:HI0c++OCvkGsUWa+eVFY
Malware Config
Extracted
nanocore
1.2.2.0
ibrak.ddns.net:5552
cb9ac110-8fab-472c-be79-6e01d3872258
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activate_away_mode
true
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backup_connection_host
ibrak.ddns.net
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2018-09-19T17:49:22.454245236Z
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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
5552
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default_group
Auto
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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
cb9ac110-8fab-472c-be79-6e01d3872258
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
ibrak.ddns.net
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primary_dns_server
8.8.8.8
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request_elevation
true
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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 1 IoCs
Processes:
RegAsm.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.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:
83194808dedca5774eb592aa86273131_JaffaCakes118.exedescription pid process target process PID 2340 set thread context of 1788 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe RegAsm.exe -
Drops file in Program Files directory 2 IoCs
Processes:
RegAsm.exedescription ioc process File created C:\Program Files (x86)\TCP Subsystem\tcpss.exe RegAsm.exe File opened for modification C:\Program Files (x86)\TCP Subsystem\tcpss.exe RegAsm.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegAsm.exepid process 1788 RegAsm.exe 1788 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegAsm.exepid process 1788 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 1788 RegAsm.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
83194808dedca5774eb592aa86273131_JaffaCakes118.exedescription pid process target process PID 2340 wrote to memory of 2188 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe schtasks.exe PID 2340 wrote to memory of 2188 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe schtasks.exe PID 2340 wrote to memory of 2188 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe schtasks.exe PID 2340 wrote to memory of 2188 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe schtasks.exe PID 2340 wrote to memory of 1788 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe RegAsm.exe PID 2340 wrote to memory of 1788 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe RegAsm.exe PID 2340 wrote to memory of 1788 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe RegAsm.exe PID 2340 wrote to memory of 1788 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe RegAsm.exe PID 2340 wrote to memory of 1788 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe RegAsm.exe PID 2340 wrote to memory of 1788 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe RegAsm.exe PID 2340 wrote to memory of 1788 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe RegAsm.exe PID 2340 wrote to memory of 1788 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe RegAsm.exe PID 2340 wrote to memory of 1788 2340 83194808dedca5774eb592aa86273131_JaffaCakes118.exe RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\83194808dedca5774eb592aa86273131_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\83194808dedca5774eb592aa86273131_JaffaCakes118.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\SysWOW64\schtasks.exe" /create /tn /tr "C:\Users\Admin\\.exe" /sc minute /mo 1 /F2⤵
- Creates scheduled task(s)
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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/1788-1-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1788-9-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1788-8-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1788-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmpFilesize
4KB
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memory/1788-2-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2340-10-0x0000000000230000-0x0000000000231000-memory.dmpFilesize
4KB