Analysis
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max time kernel
15s -
max time network
150s -
platform
windows10_x64 -
resource
win10v20201028 -
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
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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\WAN Service = "C:\\Program Files (x86)\\WAN Service\\wansv.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 3992 set thread context of 1608 3992 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)\WAN Service\wansv.exe Paypal Payment Authorization pdf.exe File opened for modification C:\Program Files (x86)\WAN Service\wansv.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 3612 schtasks.exe 1096 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
Paypal Payment Authorization pdf.exepid process 1608 Paypal Payment Authorization pdf.exe 1608 Paypal Payment Authorization pdf.exe 1608 Paypal Payment Authorization pdf.exe 1608 Paypal Payment Authorization pdf.exe 1608 Paypal Payment Authorization pdf.exe 1608 Paypal Payment Authorization pdf.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
Paypal Payment Authorization pdf.exepid process 1608 Paypal Payment Authorization pdf.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
Paypal Payment Authorization pdf.exedescription pid process Token: SeDebugPrivilege 1608 Paypal Payment Authorization pdf.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
Paypal Payment Authorization pdf.exePaypal Payment Authorization pdf.exedescription pid process target process PID 3992 wrote to memory of 1608 3992 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 3992 wrote to memory of 1608 3992 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 3992 wrote to memory of 1608 3992 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 3992 wrote to memory of 1608 3992 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 3992 wrote to memory of 1608 3992 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 3992 wrote to memory of 1608 3992 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 3992 wrote to memory of 1608 3992 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 3992 wrote to memory of 1608 3992 Paypal Payment Authorization pdf.exe Paypal Payment Authorization pdf.exe PID 1608 wrote to memory of 3612 1608 Paypal Payment Authorization pdf.exe schtasks.exe PID 1608 wrote to memory of 3612 1608 Paypal Payment Authorization pdf.exe schtasks.exe PID 1608 wrote to memory of 3612 1608 Paypal Payment Authorization pdf.exe schtasks.exe PID 1608 wrote to memory of 1096 1608 Paypal Payment Authorization pdf.exe schtasks.exe PID 1608 wrote to memory of 1096 1608 Paypal Payment Authorization pdf.exe schtasks.exe PID 1608 wrote to memory of 1096 1608 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 "WAN Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1AC1.tmp"3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "WAN Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1B5E.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\Microsoft\CLR_v4.0_32\UsageLogs\Paypal Payment Authorization pdf.exe.logMD5
f847d4536180a5eb50721f12ee0e09a9
SHA1afc4c4548942f10cc1ef77954b4270d4b72decc3
SHA2569ac77dc9e9e4b1e6f4586a677c4dd744c5c4d8c300e0b61318a208d2d5f4209c
SHA5120d20d45d8d8ce312cf959f1fb24fac5e6c6572c24c50a1d6074945dd4050cd848e774820fe1e3a01b1fef0da9b17dba8cf7d4de4c7cb3129e542fc125fb5e602
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C:\Users\Admin\AppData\Local\Temp\tmp1AC1.tmpMD5
8076d6ef42a885457fd6004383f2f283
SHA1f4e3b0363e0ba4ae76a6487705878477d5695407
SHA2565ef8158e87465bdc6f13d62e09d0c466e419533ec1244ce54003c766f14b790c
SHA512bdadeff7d5494db9313a44fe58fc8283ff9cf65abfe4e5e733bd8df97daa9efddf3b886b437ebe4f98c93911848091be33554ed248b6b479813d12fdd9bdceac
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C:\Users\Admin\AppData\Local\Temp\tmp1B5E.tmpMD5
eb527779d4a920bac8c3c59e8f4b4b4c
SHA14c9c48fd4ab89a983c87d810577133dc281160b4
SHA25697a200adfccc855ed435941fe1453a6add1a66b8390d033279c2f1a6a64c26a2
SHA512a48c1ca2310a4bceacca90d3b8748fdecc0169738905e0bc62a665ab048c1ae6bb801dc99f0f04d85287993c27bfd0a4e7f59d27a1c233b6662d6ba3ca586da0
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memory/1096-20-0x0000000000000000-mapping.dmp
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memory/1608-23-0x0000000006230000-0x0000000006249000-memory.dmpFilesize
100KB
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memory/1608-30-0x0000000006A00000-0x0000000006A07000-memory.dmpFilesize
28KB
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memory/1608-9-0x000000000041E792-mapping.dmp
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memory/1608-8-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1608-11-0x00000000738E0000-0x0000000073FCE000-memory.dmpFilesize
6.9MB
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memory/1608-15-0x0000000005240000-0x0000000005241000-memory.dmpFilesize
4KB
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memory/1608-17-0x00000000051D0000-0x00000000051D1000-memory.dmpFilesize
4KB
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memory/1608-38-0x0000000006C90000-0x0000000006C91000-memory.dmpFilesize
4KB
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memory/1608-37-0x0000000006AB0000-0x0000000006ABF000-memory.dmpFilesize
60KB
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memory/1608-36-0x0000000006A70000-0x0000000006A99000-memory.dmpFilesize
164KB
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memory/1608-35-0x0000000006A60000-0x0000000006A6A000-memory.dmpFilesize
40KB
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memory/1608-22-0x0000000005730000-0x0000000005735000-memory.dmpFilesize
20KB
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memory/1608-34-0x0000000006A40000-0x0000000006A4F000-memory.dmpFilesize
60KB
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memory/1608-24-0x0000000006360000-0x0000000006363000-memory.dmpFilesize
12KB
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memory/1608-25-0x0000000006370000-0x0000000006372000-memory.dmpFilesize
8KB
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memory/1608-26-0x0000000006380000-0x000000000638D000-memory.dmpFilesize
52KB
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memory/1608-27-0x00000000069B0000-0x00000000069C5000-memory.dmpFilesize
84KB
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memory/1608-28-0x00000000069E0000-0x00000000069E6000-memory.dmpFilesize
24KB
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memory/1608-29-0x00000000069F0000-0x00000000069FC000-memory.dmpFilesize
48KB
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memory/1608-33-0x0000000006A30000-0x0000000006A39000-memory.dmpFilesize
36KB
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memory/1608-31-0x0000000006A10000-0x0000000006A16000-memory.dmpFilesize
24KB
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memory/1608-32-0x0000000006A20000-0x0000000006A2D000-memory.dmpFilesize
52KB
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memory/3612-18-0x0000000000000000-mapping.dmp
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memory/3992-7-0x00000000053E0000-0x00000000053F2000-memory.dmpFilesize
72KB
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memory/3992-2-0x00000000738E0000-0x0000000073FCE000-memory.dmpFilesize
6.9MB
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memory/3992-3-0x0000000000BE0000-0x0000000000BE1000-memory.dmpFilesize
4KB
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memory/3992-5-0x00000000058A0000-0x00000000058A1000-memory.dmpFilesize
4KB
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memory/3992-6-0x0000000005480000-0x0000000005481000-memory.dmpFilesize
4KB