Analysis
-
max time kernel
114s -
max time network
153s -
platform
windows7_x64 -
resource
win7 -
submitted
07-07-2020 12:42
Static task
static1
Behavioral task
behavioral1
Sample
CV_JOB REQUEST_Pdf.exe
Resource
win7
General
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Target
CV_JOB REQUEST_Pdf.exe
-
Size
481KB
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MD5
37aa5a40f887d4af4058ed721e3b400d
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SHA1
299e38607281bf9502189155be9db77ee9b154ac
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SHA256
500993334540fe89b080d37fcfe6c1a46745e668232cca7f672925674b38761c
-
SHA512
567c76deebdaca5084713af38050c77a4da9cd513a4841f0ad3a7e36697dde411ea9bf99d89ffcd6105dc72e50a7c8447e5fc0effa2a958e600304afc598db92
Malware Config
Extracted
nanocore
1.2.2.0
yaunywxb.ddns.net:2451
928f4dff-7bc3-4b15-bdbf-4e7a61a704ea
-
activate_away_mode
true
- backup_connection_host
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2020-04-13T00:32:24.147747136Z
-
bypass_user_account_control
false
-
bypass_user_account_control_data
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
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
2451
-
default_group
MIMS NEW
-
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
928f4dff-7bc3-4b15-bdbf-4e7a61a704ea
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
yaunywxb.ddns.net
-
primary_dns_server
8.8.8.8
-
request_elevation
true
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
false
-
set_critical_process
true
-
timeout_interval
5000
-
use_custom_dns_server
false
-
version
1.2.2.0
-
wan_timeout
8000
Signatures
-
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
CV_JOB REQUEST_Pdf.exeCV_JOB REQUEST_Pdf.exedescription pid process target process PID 1080 wrote to memory of 1340 1080 CV_JOB REQUEST_Pdf.exe CV_JOB REQUEST_Pdf.exe PID 1080 wrote to memory of 1340 1080 CV_JOB REQUEST_Pdf.exe CV_JOB REQUEST_Pdf.exe PID 1080 wrote to memory of 1340 1080 CV_JOB REQUEST_Pdf.exe CV_JOB REQUEST_Pdf.exe PID 1080 wrote to memory of 1340 1080 CV_JOB REQUEST_Pdf.exe CV_JOB REQUEST_Pdf.exe PID 1080 wrote to memory of 1340 1080 CV_JOB REQUEST_Pdf.exe CV_JOB REQUEST_Pdf.exe PID 1080 wrote to memory of 1340 1080 CV_JOB REQUEST_Pdf.exe CV_JOB REQUEST_Pdf.exe PID 1080 wrote to memory of 1340 1080 CV_JOB REQUEST_Pdf.exe CV_JOB REQUEST_Pdf.exe PID 1080 wrote to memory of 1340 1080 CV_JOB REQUEST_Pdf.exe CV_JOB REQUEST_Pdf.exe PID 1080 wrote to memory of 1340 1080 CV_JOB REQUEST_Pdf.exe CV_JOB REQUEST_Pdf.exe PID 1340 wrote to memory of 1472 1340 CV_JOB REQUEST_Pdf.exe schtasks.exe PID 1340 wrote to memory of 1472 1340 CV_JOB REQUEST_Pdf.exe schtasks.exe PID 1340 wrote to memory of 1472 1340 CV_JOB REQUEST_Pdf.exe schtasks.exe PID 1340 wrote to memory of 1472 1340 CV_JOB REQUEST_Pdf.exe schtasks.exe PID 1340 wrote to memory of 1616 1340 CV_JOB REQUEST_Pdf.exe schtasks.exe PID 1340 wrote to memory of 1616 1340 CV_JOB REQUEST_Pdf.exe schtasks.exe PID 1340 wrote to memory of 1616 1340 CV_JOB REQUEST_Pdf.exe schtasks.exe PID 1340 wrote to memory of 1616 1340 CV_JOB REQUEST_Pdf.exe schtasks.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
CV_JOB REQUEST_Pdf.exepid process 1340 CV_JOB REQUEST_Pdf.exe -
Drops file in Program Files directory 2 IoCs
Processes:
CV_JOB REQUEST_Pdf.exedescription ioc process File created C:\Program Files (x86)\WAN Subsystem\wanss.exe CV_JOB REQUEST_Pdf.exe File opened for modification C:\Program Files (x86)\WAN Subsystem\wanss.exe CV_JOB REQUEST_Pdf.exe -
Adds Run entry to start application 2 TTPs 1 IoCs
Processes:
CV_JOB REQUEST_Pdf.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WAN Subsystem = "C:\\Program Files (x86)\\WAN Subsystem\\wanss.exe" CV_JOB REQUEST_Pdf.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 1472 schtasks.exe 1616 schtasks.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
CV_JOB REQUEST_Pdf.exedescription pid process target process PID 1080 set thread context of 1340 1080 CV_JOB REQUEST_Pdf.exe CV_JOB REQUEST_Pdf.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
CV_JOB REQUEST_Pdf.exedescription pid process Token: SeDebugPrivilege 1340 CV_JOB REQUEST_Pdf.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
CV_JOB REQUEST_Pdf.exepid process 1340 CV_JOB REQUEST_Pdf.exe 1340 CV_JOB REQUEST_Pdf.exe 1340 CV_JOB REQUEST_Pdf.exe 1340 CV_JOB REQUEST_Pdf.exe -
Processes:
CV_JOB REQUEST_Pdf.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA CV_JOB REQUEST_Pdf.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\CV_JOB REQUEST_Pdf.exe"C:\Users\Admin\AppData\Local\Temp\CV_JOB REQUEST_Pdf.exe"1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
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C:\Users\Admin\AppData\Local\Temp\CV_JOB REQUEST_Pdf.exe"{path}"2⤵
- Suspicious use of WriteProcessMemory
- Suspicious behavior: GetForegroundWindowSpam
- Drops file in Program Files directory
- Adds Run entry to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Checks whether UAC is enabled
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "WAN Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp90D9.tmp"3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "WAN Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9231.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\tmp90D9.tmp
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C:\Users\Admin\AppData\Local\Temp\tmp9231.tmp
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memory/1340-0-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1340-1-0x000000000041E792-mapping.dmp
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memory/1340-2-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1340-3-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1472-4-0x0000000000000000-mapping.dmp
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memory/1616-6-0x0000000000000000-mapping.dmp