Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
01-06-2024 23:53
Static task
static1
Behavioral task
behavioral1
Sample
8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exe
Resource
win7-20240221-en
General
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Target
8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exe
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Size
1.2MB
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MD5
8c39cc62f2000ecba993c4007eee1fdd
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SHA1
915d1a8ec37a47219df11fad59cfc6be9dfc831c
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SHA256
0b4b49b52c1dcff8ef56a5aacced6534726a4640f1db8e5f443e22acc4041665
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SHA512
17d48ba5534c2b9d639c73932d0b45443172ac4548cad87cb1a1e9ac6411a9aaa3e16320cd47985e7caa5137e8e4e7e7dcc49190fe5668f4bdc69ec92ff20895
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SSDEEP
24576:EXpbtELnxtirAd1OPg/Q5hjEdi7CtTHvNGl+BIv50S:wbmDxtirAuPg/bKKLs0s
Malware Config
Extracted
nanocore
1.2.2.0
160.116.15.155:7676
3f96cee6-4510-4f1f-85d9-fc14fe0fe2bc
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activate_away_mode
true
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backup_connection_host
160.116.15.155
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2019-05-17T08:53:58.555812536Z
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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
7676
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default_group
Oh Father
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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
3f96cee6-4510-4f1f-85d9-fc14fe0fe2bc
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
160.116.15.155
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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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Drops startup file 1 IoCs
Processes:
8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HJdyTuap.exe 8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exe -
Obfuscated with Agile.Net obfuscator 1 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
Processes:
resource yara_rule behavioral2/memory/920-3-0x0000000005960000-0x0000000005A10000-memory.dmp agile_net -
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\AGP Service = "C:\\Program Files (x86)\\AGP Service\\agpsv.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:
8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exedescription pid process target process PID 920 set thread context of 4956 920 8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exe RegAsm.exe -
Drops file in Program Files directory 2 IoCs
Processes:
RegAsm.exedescription ioc process File created C:\Program Files (x86)\AGP Service\agpsv.exe RegAsm.exe File opened for modification C:\Program Files (x86)\AGP Service\agpsv.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
RegAsm.exepid process 4956 RegAsm.exe 4956 RegAsm.exe 4956 RegAsm.exe 4956 RegAsm.exe 4956 RegAsm.exe 4956 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegAsm.exepid process 4956 RegAsm.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exepid process 920 8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 4956 RegAsm.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exedescription pid process target process PID 920 wrote to memory of 4956 920 8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exe RegAsm.exe PID 920 wrote to memory of 4956 920 8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exe RegAsm.exe PID 920 wrote to memory of 4956 920 8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exe RegAsm.exe PID 920 wrote to memory of 4956 920 8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exe RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\8c39cc62f2000ecba993c4007eee1fdd_JaffaCakes118.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- 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
Loading Replay Monitor...
Downloads
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memory/920-0-0x000000007464E000-0x000000007464F000-memory.dmpFilesize
4KB
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memory/920-1-0x0000000000E10000-0x0000000000F40000-memory.dmpFilesize
1.2MB
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memory/920-2-0x0000000003380000-0x0000000003388000-memory.dmpFilesize
32KB
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memory/920-3-0x0000000005960000-0x0000000005A10000-memory.dmpFilesize
704KB
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memory/920-4-0x0000000074640000-0x0000000074DF0000-memory.dmpFilesize
7.7MB
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memory/920-5-0x0000000007ED0000-0x0000000007F4E000-memory.dmpFilesize
504KB
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memory/920-6-0x0000000074640000-0x0000000074DF0000-memory.dmpFilesize
7.7MB
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memory/920-9-0x0000000074640000-0x0000000074DF0000-memory.dmpFilesize
7.7MB
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memory/4956-7-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/4956-10-0x0000000074180000-0x0000000074788000-memory.dmpFilesize
6.0MB