Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10_x64 -
resource
win10-en-20211014 -
submitted
25-10-2021 12:39
Static task
static1
Behavioral task
behavioral1
Sample
CV.exe
Resource
win7-en-20210920
General
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Target
CV.exe
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Size
690KB
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MD5
5d9fed85f31d020568f166e6291cbe7b
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SHA1
df89b8bfedfd260e648b3a8938b47db6d2e1591c
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SHA256
9219aa9982516a8454b770461ed85217cf3adc6c2c2008b296720e3665b51e54
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SHA512
0eb7b60fbbaacf29e0ddc98b776c50e5395214f75e048d61a6739c4552cd301e10ca8cc361e23762caacfd07ebfd99058c302b5849fa7585d14614baf3968638
Malware Config
Extracted
nanocore
1.2.2.0
kamuchehddhgfgf.ddns.net:1187
37.0.10.22:1187
baa1bd16-ba50-4743-8b51-41c36ee5d9d4
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activate_away_mode
true
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backup_connection_host
37.0.10.22
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2021-07-10T08:16:56.984441236Z
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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
1187
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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
-
max_packet_size
1.048576e+07
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mutex
baa1bd16-ba50-4743-8b51-41c36ee5d9d4
-
mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
kamuchehddhgfgf.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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suricata: ET MALWARE Possible NanoCore C2 60B
suricata: ET MALWARE Possible NanoCore C2 60B
-
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
CV.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Manager = "C:\\Program Files (x86)\\SMTP Manager\\smtpmgr.exe" CV.exe -
Processes:
CV.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA CV.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
CV.exedescription pid process target process PID 1496 set thread context of 1832 1496 CV.exe CV.exe -
Drops file in Program Files directory 2 IoCs
Processes:
CV.exedescription ioc process File created C:\Program Files (x86)\SMTP Manager\smtpmgr.exe CV.exe File opened for modification C:\Program Files (x86)\SMTP Manager\smtpmgr.exe CV.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
CV.exeCV.exepid process 1496 CV.exe 1496 CV.exe 1832 CV.exe 1832 CV.exe 1832 CV.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
CV.exepid process 1832 CV.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
CV.exeCV.exedescription pid process Token: SeDebugPrivilege 1496 CV.exe Token: SeDebugPrivilege 1832 CV.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
CV.exedescription pid process target process PID 1496 wrote to memory of 3016 1496 CV.exe CV.exe PID 1496 wrote to memory of 3016 1496 CV.exe CV.exe PID 1496 wrote to memory of 3016 1496 CV.exe CV.exe PID 1496 wrote to memory of 1832 1496 CV.exe CV.exe PID 1496 wrote to memory of 1832 1496 CV.exe CV.exe PID 1496 wrote to memory of 1832 1496 CV.exe CV.exe PID 1496 wrote to memory of 1832 1496 CV.exe CV.exe PID 1496 wrote to memory of 1832 1496 CV.exe CV.exe PID 1496 wrote to memory of 1832 1496 CV.exe CV.exe PID 1496 wrote to memory of 1832 1496 CV.exe CV.exe PID 1496 wrote to memory of 1832 1496 CV.exe CV.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\CV.exe"C:\Users\Admin\AppData\Local\Temp\CV.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\CV.exe"C:\Users\Admin\AppData\Local\Temp\CV.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\CV.exe"C:\Users\Admin\AppData\Local\Temp\CV.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 v6
Replay Monitor
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Downloads
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memory/1496-115-0x0000000002560000-0x0000000002561000-memory.dmpFilesize
4KB
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memory/1832-116-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1832-117-0x000000000041E792-mapping.dmp
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memory/1832-118-0x0000000002660000-0x0000000002661000-memory.dmpFilesize
4KB