Analysis
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max time kernel
150s -
max time network
152s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
31-12-2020 17:46
Static task
static1
Behavioral task
behavioral1
Sample
sample4.exe
Resource
win7v20201028
General
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Target
sample4.exe
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Size
218KB
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MD5
d14d43543f9122b24fb3d608103ac5d0
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SHA1
c265c4e9f49e61e6de125d60daeb0de56c2b71cd
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SHA256
69bd7c9b3d1adafef81b742a3de8bb62fb090963eb1cf8fc0b9dbccd7af60b8e
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SHA512
1ea4874567bedf2e38ace873a344cd069d35cdedf9eb1c02014e375c2fd2c7a92fc060b83d8ba30628a8e9df7a031eee7ddfbabef55c633b9483213c7da4063f
Malware Config
Extracted
nanocore
1.2.2.0
mranubis.ddns.net:53896
127.0.0.1:53896
43ee9fcc-5a8f-4789-aabd-da9ac4f835d3
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activate_away_mode
true
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backup_connection_host
127.0.0.1
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2020-10-06T02:37:49.747163736Z
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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
53896
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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
43ee9fcc-5a8f-4789-aabd-da9ac4f835d3
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
mranubis.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\NTFS Manager = "C:\\Program Files (x86)\\NTFS Manager\\ntfsmgr.exe" RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
sample4.exedescription pid process target process PID 1084 set thread context of 2036 1084 sample4.exe RegAsm.exe -
Drops file in Program Files directory 2 IoCs
Processes:
RegAsm.exedescription ioc process File opened for modification C:\Program Files (x86)\NTFS Manager\ntfsmgr.exe RegAsm.exe File created C:\Program Files (x86)\NTFS Manager\ntfsmgr.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegAsm.exepid process 2036 RegAsm.exe 2036 RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegAsm.exepid process 2036 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 2036 RegAsm.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
sample4.exedescription pid process target process PID 1084 wrote to memory of 2036 1084 sample4.exe RegAsm.exe PID 1084 wrote to memory of 2036 1084 sample4.exe RegAsm.exe PID 1084 wrote to memory of 2036 1084 sample4.exe RegAsm.exe PID 1084 wrote to memory of 2036 1084 sample4.exe RegAsm.exe PID 1084 wrote to memory of 2036 1084 sample4.exe RegAsm.exe PID 1084 wrote to memory of 2036 1084 sample4.exe RegAsm.exe PID 1084 wrote to memory of 2036 1084 sample4.exe RegAsm.exe PID 1084 wrote to memory of 2036 1084 sample4.exe RegAsm.exe PID 1084 wrote to memory of 2036 1084 sample4.exe RegAsm.exe PID 1084 wrote to memory of 2036 1084 sample4.exe RegAsm.exe PID 1084 wrote to memory of 2036 1084 sample4.exe RegAsm.exe PID 1084 wrote to memory of 2036 1084 sample4.exe RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\sample4.exe"C:\Users\Admin\AppData\Local\Temp\sample4.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Adds Run key to start application
- 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/1084-2-0x0000000074710000-0x0000000074DFE000-memory.dmpFilesize
6.9MB
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memory/1084-3-0x00000000010F0000-0x00000000010F1000-memory.dmpFilesize
4KB
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memory/1084-5-0x0000000000380000-0x00000000003B6000-memory.dmpFilesize
216KB
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memory/2036-6-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2036-7-0x000000000041E792-mapping.dmp
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memory/2036-8-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2036-9-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2036-10-0x0000000074390000-0x0000000074A7E000-memory.dmpFilesize
6.9MB
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memory/2036-13-0x0000000000510000-0x0000000000515000-memory.dmpFilesize
20KB
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memory/2036-14-0x00000000006F0000-0x0000000000709000-memory.dmpFilesize
100KB
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memory/2036-15-0x0000000000520000-0x0000000000523000-memory.dmpFilesize
12KB