Analysis
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max time kernel
112s -
max time network
147s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
10-01-2021 07:25
Static task
static1
Behavioral task
behavioral1
Sample
Paypal Payment Authorization pdf.exe
Resource
win7v20201028
General
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Target
Paypal Payment Authorization pdf.exe
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Size
344KB
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MD5
43796c264cd5716211cca1333d02c545
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SHA1
cd0af8e864d885c7495a0783a17daa185c7ac224
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SHA256
1d7e3f93b597143dc7762692af6d463b43feac3372d01a1ced3e9e6741205533
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SHA512
b1a795e53ef3f7905eab4e19600c67ed78cc4ea7539a50c5733e2ef944a7f9c5353d5678d7d50236730e14b851e2b659fe356f3bcd36f041d0945ea83f5806c1
Malware Config
Extracted
nanocore
1.2.2.0
185.244.38.210:7008
127.0.0.1:7008
003adc3a-22f1-4bc1-a79f-fc8c7d09606c
-
activate_away_mode
false
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backup_connection_host
127.0.0.1
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backup_dns_server
8.8.4.4
-
buffer_size
65535
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build_time
2020-10-20T22:48:03.749409436Z
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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
2000
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connection_port
7008
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default_group
Mjx_users
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enable_debug_mode
true
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gc_threshold
1.048576e+07
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keep_alive_timeout
50000
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keyboard_logging
false
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lan_timeout
3500
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max_packet_size
1.048576e+07
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mutex
003adc3a-22f1-4bc1-a79f-fc8c7d09606c
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
185.244.38.210
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primary_dns_server
8.8.8.8
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request_elevation
true
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restart_delay
3000
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run_delay
1000
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run_on_startup
false
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set_critical_process
true
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timeout_interval
4000
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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:
Paypal Payment Authorization pdf.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Host = "C:\\Program Files (x86)\\WPA Host\\wpahost.exe" Paypal Payment Authorization pdf.exe -
Processes:
Paypal Payment Authorization pdf.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Paypal Payment Authorization pdf.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Paypal Payment Authorization pdf.exedescription pid process target process PID 1068 set thread context of 280 1068 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe -
Drops file in Program Files directory 2 IoCs
Processes:
Paypal Payment Authorization pdf.exedescription ioc process File created C:\Program Files (x86)\WPA Host\wpahost.exe Paypal Payment Authorization pdf.exe File opened for modification C:\Program Files (x86)\WPA Host\wpahost.exe Paypal Payment Authorization 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 1848 schtasks.exe 1992 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
Paypal Payment Authorization pdf.exepid process 280 Paypal Payment Authorization pdf.exe 280 Paypal Payment Authorization pdf.exe 280 Paypal Payment Authorization pdf.exe 280 Paypal Payment Authorization pdf.exe 280 Paypal Payment Authorization pdf.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
Paypal Payment Authorization pdf.exepid process 280 Paypal Payment Authorization pdf.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
Paypal Payment Authorization pdf.exedescription pid process Token: SeDebugPrivilege 280 Paypal Payment Authorization pdf.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
Paypal Payment Authorization pdf.exePaypal Payment Authorization pdf.exedescription pid process target process PID 1068 wrote to memory of 280 1068 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 1068 wrote to memory of 280 1068 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 1068 wrote to memory of 280 1068 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 1068 wrote to memory of 280 1068 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 1068 wrote to memory of 280 1068 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 1068 wrote to memory of 280 1068 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 1068 wrote to memory of 280 1068 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 1068 wrote to memory of 280 1068 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 1068 wrote to memory of 280 1068 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 280 wrote to memory of 1848 280 Paypal Payment Authorization pdf.exe schtasks.exe PID 280 wrote to memory of 1848 280 Paypal Payment Authorization pdf.exe schtasks.exe PID 280 wrote to memory of 1848 280 Paypal Payment Authorization pdf.exe schtasks.exe PID 280 wrote to memory of 1848 280 Paypal Payment Authorization pdf.exe schtasks.exe PID 280 wrote to memory of 1992 280 Paypal Payment Authorization pdf.exe schtasks.exe PID 280 wrote to memory of 1992 280 Paypal Payment Authorization pdf.exe schtasks.exe PID 280 wrote to memory of 1992 280 Paypal Payment Authorization pdf.exe schtasks.exe PID 280 wrote to memory of 1992 280 Paypal Payment Authorization pdf.exe schtasks.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Paypal Payment Authorization pdf.exe"C:\Users\Admin\AppData\Local\Temp\Paypal Payment Authorization pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Paypal Payment Authorization pdf.exe"C:\Users\Admin\AppData\Local\Temp\Paypal Payment Authorization pdf.exe"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "WPA Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp15B2.tmp"3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "WPA Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp16DC.tmp"3⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp15B2.tmpMD5
8076d6ef42a885457fd6004383f2f283
SHA1f4e3b0363e0ba4ae76a6487705878477d5695407
SHA2565ef8158e87465bdc6f13d62e09d0c466e419533ec1244ce54003c766f14b790c
SHA512bdadeff7d5494db9313a44fe58fc8283ff9cf65abfe4e5e733bd8df97daa9efddf3b886b437ebe4f98c93911848091be33554ed248b6b479813d12fdd9bdceac
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C:\Users\Admin\AppData\Local\Temp\tmp16DC.tmpMD5
819bdbdac3be050783d203020e6c4c30
SHA1a373521fceb21cac8b93e55ee48578e40a6e740b
SHA2560e5dedca6d0d3c50ebcedb5bbf51ef3d434eb6b43da46764205de7636131f053
SHA512cece1c4d8b4db79fc6e3cd225efaccdf9d2493f28991b1d48439944af38aaa61a215bd00a0beedcbdecc4f1ec5be0843774375a483f3d4a573a3980c54798cbd
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memory/280-19-0x00000000003E0000-0x00000000003E3000-memory.dmpFilesize
12KB
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memory/280-26-0x0000000000CE0000-0x0000000000CE6000-memory.dmpFilesize
24KB
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memory/280-20-0x00000000004E0000-0x00000000004E2000-memory.dmpFilesize
8KB
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memory/280-21-0x00000000004F0000-0x00000000004FD000-memory.dmpFilesize
52KB
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memory/280-8-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/280-10-0x0000000074E60000-0x000000007554E000-memory.dmpFilesize
6.9MB
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memory/280-31-0x0000000004850000-0x0000000004879000-memory.dmpFilesize
164KB
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memory/280-30-0x00000000041D0000-0x00000000041DA000-memory.dmpFilesize
40KB
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memory/280-29-0x0000000000D50000-0x0000000000D5F000-memory.dmpFilesize
60KB
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memory/280-28-0x0000000000D40000-0x0000000000D49000-memory.dmpFilesize
36KB
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memory/280-17-0x0000000000250000-0x0000000000255000-memory.dmpFilesize
20KB
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memory/280-18-0x0000000000370000-0x0000000000389000-memory.dmpFilesize
100KB
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memory/280-32-0x0000000004320000-0x000000000432F000-memory.dmpFilesize
60KB
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memory/280-7-0x000000000041E792-mapping.dmp
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memory/280-9-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/280-22-0x0000000000570000-0x0000000000585000-memory.dmpFilesize
84KB
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memory/280-23-0x0000000000520000-0x0000000000526000-memory.dmpFilesize
24KB
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memory/280-24-0x0000000000B00000-0x0000000000B0C000-memory.dmpFilesize
48KB
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memory/280-25-0x0000000000B90000-0x0000000000B97000-memory.dmpFilesize
28KB
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memory/280-6-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/280-27-0x0000000000CF0000-0x0000000000CFD000-memory.dmpFilesize
52KB
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memory/1068-3-0x0000000000D60000-0x0000000000D61000-memory.dmpFilesize
4KB
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memory/1068-5-0x00000000001F0000-0x0000000000202000-memory.dmpFilesize
72KB
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memory/1068-2-0x0000000074EE0000-0x00000000755CE000-memory.dmpFilesize
6.9MB
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memory/1848-13-0x0000000000000000-mapping.dmp
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memory/1992-15-0x0000000000000000-mapping.dmp