Analysis
-
max time kernel
145s -
max time network
148s -
platform
windows10_x64 -
resource
win10 -
submitted
09-07-2020 13:39
Static task
static1
Behavioral task
behavioral1
Sample
dutyx.exe
Resource
win7v200430
General
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Target
dutyx.exe
-
Size
932KB
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MD5
5aab72a04e08d18505e3b80390a61ba5
-
SHA1
18e60c3c8112b0681db538eb2c4c9bde7d590aaa
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SHA256
2acf6c2398a12dc97ff2ceec4f348ed6338c4aafb2dcfeb24856cf8526d12a9d
-
SHA512
2920b69e55ef7304b66856c41c762a8426df109021156776e6d501693bce2b6e329837693b1e8414caeae2aa3e618274ee8906e01727b061fdf3054971be98ac
Malware Config
Extracted
nanocore
1.2.2.0
79.134.225.75:21600
85973092-053f-4ccf-8ddc-0f660900bcba
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activate_away_mode
false
- backup_connection_host
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2019-08-24T13:32:11.278262436Z
-
bypass_user_account_control
false
-
bypass_user_account_control_data
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
-
clear_access_control
false
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
21600
-
default_group
Default
-
enable_debug_mode
true
-
gc_threshold
1.048576e+07
-
keep_alive_timeout
30000
-
keyboard_logging
false
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
-
mutex
85973092-053f-4ccf-8ddc-0f660900bcba
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
79.134.225.75
-
primary_dns_server
8.8.8.8
-
request_elevation
false
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
false
-
set_critical_process
false
-
timeout_interval
5000
-
use_custom_dns_server
false
-
version
1.2.2.0
-
wan_timeout
8000
Signatures
-
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
dutyx.exedutyx.exepid process 3060 dutyx.exe 3060 dutyx.exe 3836 dutyx.exe 3836 dutyx.exe 3836 dutyx.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
dutyx.exepid process 3060 dutyx.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
dutyx.exedescription pid process target process PID 3060 set thread context of 3836 3060 dutyx.exe dutyx.exe -
UPX packed file 3 IoCs
Detects executables packed with UPX/modified UPX open source packer.
Processes:
resource yara_rule behavioral2/memory/3836-0-0x0000000000400000-0x000000000047F000-memory.dmp upx behavioral2/memory/3836-2-0x0000000000400000-0x000000000047F000-memory.dmp upx behavioral2/memory/3836-3-0x0000000000400000-0x000000000047F000-memory.dmp upx -
Adds Run entry to start application 2 TTPs 1 IoCs
Processes:
dutyx.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DDP Subsystem = "C:\\Program Files (x86)\\DDP Subsystem\\ddpss.exe" dutyx.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 3844 schtasks.exe 1488 schtasks.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
dutyx.exedutyx.exedescription pid process target process PID 3060 wrote to memory of 3836 3060 dutyx.exe dutyx.exe PID 3060 wrote to memory of 3836 3060 dutyx.exe dutyx.exe PID 3060 wrote to memory of 3836 3060 dutyx.exe dutyx.exe PID 3836 wrote to memory of 3844 3836 dutyx.exe schtasks.exe PID 3836 wrote to memory of 3844 3836 dutyx.exe schtasks.exe PID 3836 wrote to memory of 3844 3836 dutyx.exe schtasks.exe PID 3836 wrote to memory of 1488 3836 dutyx.exe schtasks.exe PID 3836 wrote to memory of 1488 3836 dutyx.exe schtasks.exe PID 3836 wrote to memory of 1488 3836 dutyx.exe schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
dutyx.exedescription pid process Token: SeDebugPrivilege 3836 dutyx.exe Token: SeDebugPrivilege 3836 dutyx.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
dutyx.exepid process 3836 dutyx.exe -
Drops file in Program Files directory 2 IoCs
Processes:
dutyx.exedescription ioc process File created C:\Program Files (x86)\DDP Subsystem\ddpss.exe dutyx.exe File opened for modification C:\Program Files (x86)\DDP Subsystem\ddpss.exe dutyx.exe -
Processes:
dutyx.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA dutyx.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\dutyx.exe"C:\Users\Admin\AppData\Local\Temp\dutyx.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\dutyx.exe"C:\Users\Admin\AppData\Local\Temp\dutyx.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Adds Run entry to start application
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: GetForegroundWindowSpam
- Drops file in Program Files directory
- Checks whether UAC is enabled
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DDP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF52D.tmp"3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DDP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF5CA.tmp"3⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpF52D.tmp
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C:\Users\Admin\AppData\Local\Temp\tmpF5CA.tmp
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memory/1488-8-0x0000000000000000-mapping.dmp
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memory/3836-0-0x0000000000400000-0x000000000047F000-memory.dmpFilesize
508KB
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memory/3836-1-0x000000000047D700-mapping.dmp
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memory/3836-2-0x0000000000400000-0x000000000047F000-memory.dmpFilesize
508KB
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memory/3836-3-0x0000000000400000-0x000000000047F000-memory.dmpFilesize
508KB
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memory/3836-4-0x0000000000950000-0x0000000000988000-memory.dmpFilesize
224KB
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memory/3836-5-0x00000000009D2000-0x00000000009D3000-memory.dmpFilesize
4KB
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memory/3844-6-0x0000000000000000-mapping.dmp