Analysis
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max time kernel
150s -
max time network
155s -
platform
windows7_x64 -
resource
win7 -
submitted
08-07-2020 06:52
Static task
static1
Behavioral task
behavioral1
Sample
0759_08_07_20_REF3.exe
Resource
win7
General
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Target
0759_08_07_20_REF3.exe
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Size
713KB
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MD5
0757361cb0940d08653963807aaa496a
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SHA1
2839e995da54eca76acd3138c1a3f3663d93df81
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SHA256
f5cffd780367ce051b550f171bdac33d5a4eba0b12acfac1bcfa63669c94104b
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SHA512
6501103168b6e1b84c899f11807040b59d1d4b914079657cb9487c673e8335a48834c12a5d4774eba799b22425403493d5b0904549d7d0f2771de870dd31cb3b
Malware Config
Extracted
nanocore
1.2.2.0
wazzy.ddns.net:1716
194.5.99.24:1716
c1ffd46d-254d-4433-8da6-7277dec7b59a
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activate_away_mode
true
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backup_connection_host
194.5.99.24
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2020-03-28T11:57:28.371938436Z
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bypass_user_account_control
false
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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
1716
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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
c1ffd46d-254d-4433-8da6-7277dec7b59a
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
wazzy.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
true
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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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Suspicious use of WriteProcessMemory 12 IoCs
Processes:
0759_08_07_20_REF3.exe0759_08_07_20_REF3.exedescription pid process target process PID 316 wrote to memory of 1424 316 0759_08_07_20_REF3.exe 0759_08_07_20_REF3.exe PID 316 wrote to memory of 1424 316 0759_08_07_20_REF3.exe 0759_08_07_20_REF3.exe PID 316 wrote to memory of 1424 316 0759_08_07_20_REF3.exe 0759_08_07_20_REF3.exe PID 316 wrote to memory of 1424 316 0759_08_07_20_REF3.exe 0759_08_07_20_REF3.exe PID 316 wrote to memory of 1480 316 0759_08_07_20_REF3.exe 0759_08_07_20_REF3.exe PID 316 wrote to memory of 1480 316 0759_08_07_20_REF3.exe 0759_08_07_20_REF3.exe PID 316 wrote to memory of 1480 316 0759_08_07_20_REF3.exe 0759_08_07_20_REF3.exe PID 316 wrote to memory of 1480 316 0759_08_07_20_REF3.exe 0759_08_07_20_REF3.exe PID 1424 wrote to memory of 784 1424 0759_08_07_20_REF3.exe schtasks.exe PID 1424 wrote to memory of 784 1424 0759_08_07_20_REF3.exe schtasks.exe PID 1424 wrote to memory of 784 1424 0759_08_07_20_REF3.exe schtasks.exe PID 1424 wrote to memory of 784 1424 0759_08_07_20_REF3.exe schtasks.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
0759_08_07_20_REF3.exedescription pid process target process PID 316 set thread context of 1424 316 0759_08_07_20_REF3.exe 0759_08_07_20_REF3.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
0759_08_07_20_REF3.exedescription pid process Token: SeDebugPrivilege 1424 0759_08_07_20_REF3.exe -
UPX packed file 3 IoCs
Detects executables packed with UPX/modified UPX open source packer.
Processes:
resource yara_rule behavioral1/memory/1424-0-0x0000000000400000-0x000000000047F000-memory.dmp upx behavioral1/memory/1424-3-0x0000000000400000-0x000000000047F000-memory.dmp upx behavioral1/memory/1424-4-0x0000000000400000-0x000000000047F000-memory.dmp upx -
Processes:
0759_08_07_20_REF3.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 0759_08_07_20_REF3.exe -
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 1375 IoCs
Processes:
0759_08_07_20_REF3.exe0759_08_07_20_REF3.exe0759_08_07_20_REF3.exepid process 316 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1424 0759_08_07_20_REF3.exe 1424 0759_08_07_20_REF3.exe 1424 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe 1480 0759_08_07_20_REF3.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
0759_08_07_20_REF3.exepid process 1424 0759_08_07_20_REF3.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
0759_08_07_20_REF3.exepid process 316 0759_08_07_20_REF3.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0759_08_07_20_REF3.exe"C:\Users\Admin\AppData\Local\Temp\0759_08_07_20_REF3.exe"1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\0759_08_07_20_REF3.exe"C:\Users\Admin\AppData\Local\Temp\0759_08_07_20_REF3.exe"2⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "WAN Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFB5E.tmp"3⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\0759_08_07_20_REF3.exe"C:\Users\Admin\AppData\Local\Temp\0759_08_07_20_REF3.exe" 2 1424 631492⤵
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpFB5E.tmp
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memory/784-9-0x0000000000000000-mapping.dmp
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memory/1424-0-0x0000000000400000-0x000000000047F000-memory.dmpFilesize
508KB
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memory/1424-1-0x000000000047D740-mapping.dmp
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memory/1424-3-0x0000000000400000-0x000000000047F000-memory.dmpFilesize
508KB
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memory/1424-4-0x0000000000400000-0x000000000047F000-memory.dmpFilesize
508KB
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memory/1424-5-0x00000000003C0000-0x00000000003F8000-memory.dmpFilesize
224KB
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memory/1424-6-0x0000000001F72000-0x0000000001F73000-memory.dmpFilesize
4KB
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memory/1424-7-0x0000000000220000-0x0000000000253000-memory.dmpFilesize
204KB
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memory/1480-2-0x0000000000000000-mapping.dmp