Analysis
-
max time kernel
136s -
max time network
151s -
platform
windows7_x64 -
resource
win7 -
submitted
13-07-2020 09:54
Static task
static1
Behavioral task
behavioral1
Sample
PURCHASE ORDER_Pdf_________.exe
Resource
win7
Behavioral task
behavioral2
Sample
PURCHASE ORDER_Pdf_________.exe
Resource
win10v200430
General
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Target
PURCHASE ORDER_Pdf_________.exe
-
Size
265KB
-
MD5
d9ffebc5db082a1b8578599529135d4b
-
SHA1
7c5fc3e6bf64ac2527062979738e457c972f9318
-
SHA256
5b982bb28bff9233140d835bd34cb4a0ef043e2304a8ce2a934e546c1db1c475
-
SHA512
1ebd94cf15bf082d3a3803cd6b3cd416aa9b06b3a5e4d91bb959c8a7fe1c7ab232ead1d754a2d8d050e80a878216e68492947be5eb9c7e4d4bb5d6939b2e5892
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
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Drops file in Program Files directory 2 IoCs
Processes:
PURCHASE ORDER_Pdf_________.exedescription ioc process File created C:\Program Files (x86)\WAN Subsystem\wanss.exe PURCHASE ORDER_Pdf_________.exe File opened for modification C:\Program Files (x86)\WAN Subsystem\wanss.exe PURCHASE ORDER_Pdf_________.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
PURCHASE ORDER_Pdf_________.exedescription pid process Token: SeDebugPrivilege 1492 PURCHASE ORDER_Pdf_________.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
PURCHASE ORDER_Pdf_________.exepid process 1492 PURCHASE ORDER_Pdf_________.exe 1492 PURCHASE ORDER_Pdf_________.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
PURCHASE ORDER_Pdf_________.exepid process 1492 PURCHASE ORDER_Pdf_________.exe -
Processes:
PURCHASE ORDER_Pdf_________.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA PURCHASE ORDER_Pdf_________.exe -
Adds Run entry to start application 2 TTPs 1 IoCs
Processes:
PURCHASE ORDER_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" PURCHASE ORDER_Pdf_________.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
PURCHASE ORDER_Pdf_________.exePURCHASE ORDER_Pdf_________.exedescription pid process target process PID 1124 wrote to memory of 1492 1124 PURCHASE ORDER_Pdf_________.exe PURCHASE ORDER_Pdf_________.exe PID 1124 wrote to memory of 1492 1124 PURCHASE ORDER_Pdf_________.exe PURCHASE ORDER_Pdf_________.exe PID 1124 wrote to memory of 1492 1124 PURCHASE ORDER_Pdf_________.exe PURCHASE ORDER_Pdf_________.exe PID 1124 wrote to memory of 1492 1124 PURCHASE ORDER_Pdf_________.exe PURCHASE ORDER_Pdf_________.exe PID 1124 wrote to memory of 1492 1124 PURCHASE ORDER_Pdf_________.exe PURCHASE ORDER_Pdf_________.exe PID 1124 wrote to memory of 1492 1124 PURCHASE ORDER_Pdf_________.exe PURCHASE ORDER_Pdf_________.exe PID 1124 wrote to memory of 1492 1124 PURCHASE ORDER_Pdf_________.exe PURCHASE ORDER_Pdf_________.exe PID 1124 wrote to memory of 1492 1124 PURCHASE ORDER_Pdf_________.exe PURCHASE ORDER_Pdf_________.exe PID 1124 wrote to memory of 1492 1124 PURCHASE ORDER_Pdf_________.exe PURCHASE ORDER_Pdf_________.exe PID 1492 wrote to memory of 296 1492 PURCHASE ORDER_Pdf_________.exe schtasks.exe PID 1492 wrote to memory of 296 1492 PURCHASE ORDER_Pdf_________.exe schtasks.exe PID 1492 wrote to memory of 296 1492 PURCHASE ORDER_Pdf_________.exe schtasks.exe PID 1492 wrote to memory of 296 1492 PURCHASE ORDER_Pdf_________.exe schtasks.exe PID 1492 wrote to memory of 1040 1492 PURCHASE ORDER_Pdf_________.exe schtasks.exe PID 1492 wrote to memory of 1040 1492 PURCHASE ORDER_Pdf_________.exe schtasks.exe PID 1492 wrote to memory of 1040 1492 PURCHASE ORDER_Pdf_________.exe schtasks.exe PID 1492 wrote to memory of 1040 1492 PURCHASE ORDER_Pdf_________.exe schtasks.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
PURCHASE ORDER_Pdf_________.exedescription pid process target process PID 1124 set thread context of 1492 1124 PURCHASE ORDER_Pdf_________.exe PURCHASE ORDER_Pdf_________.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER_Pdf_________.exe"C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER_Pdf_________.exe"1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
PID:1124 -
C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER_Pdf_________.exe"{path}"2⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Checks whether UAC is enabled
- Adds Run entry to start application
- Suspicious use of WriteProcessMemory
PID:1492 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "WAN Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7EEF.tmp"3⤵
- Creates scheduled task(s)
PID:296 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "WAN Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8018.tmp"3⤵
- Creates scheduled task(s)
PID:1040
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp7EEF.tmp
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C:\Users\Admin\AppData\Local\Temp\tmp8018.tmp
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memory/296-6-0x0000000000000000-mapping.dmp
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memory/1040-8-0x0000000000000000-mapping.dmp
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memory/1124-1-0x0000000000000000-0x0000000000000000-disk.dmp
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memory/1492-2-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1492-3-0x000000000041E792-mapping.dmp
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memory/1492-4-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1492-5-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB