Analysis
-
max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
08-01-2021 19:07
Static task
static1
Behavioral task
behavioral1
Sample
Payment_Confirmation pdf.exe
Resource
win7v20201028
General
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Target
Payment_Confirmation pdf.exe
-
Size
436KB
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MD5
767f88a961bfbc1b8f8419a32fbade0b
-
SHA1
5577d0635fca390c305ff560ca80a6ea19ff7c5b
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SHA256
4f0035201ba7a3a536727862b8ac8dbf389038c5af1674ff7a982190fed1e30b
-
SHA512
c5ebaabcd0ecdd1d0a29e8964b02b8fad9961d7b2f144f0ad9a9b00e94cff1c4656c3154219a08ff062d97ad8d2b083a584cab7dd6e0417f233249ac3a2926c3
Malware Config
Extracted
nanocore
1.2.2.0
185.244.38.210:7008
127.0.0.1:7008
8b524be1-f4fe-4386-bd3a-d447c26466aa
-
activate_away_mode
true
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backup_connection_host
127.0.0.1
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2020-10-20T01:39:31.219190236Z
-
bypass_user_account_control
false
-
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
4000
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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
30000
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keyboard_logging
false
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lan_timeout
2500
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max_packet_size
1.048576e+07
-
mutex
8b524be1-f4fe-4386-bd3a-d447c26466aa
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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
5000
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run_delay
0
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run_on_startup
false
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set_critical_process
true
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timeout_interval
5000
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use_custom_dns_server
false
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version
1.2.2.0
-
wan_timeout
8000
Signatures
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Uses the VBS compiler for execution 1 TTPs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
vbc.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Host = "C:\\Program Files (x86)\\WPA Host\\wpahost.exe" vbc.exe -
Suspicious use of SetThreadContext 3 IoCs
Processes:
Payment_Confirmation pdf.exevbc.exedescription pid process target process PID 1080 set thread context of 1324 1080 Payment_Confirmation pdf.exe vbc.exe PID 1324 set thread context of 1276 1324 vbc.exe vbc.exe PID 1324 set thread context of 788 1324 vbc.exe vbc.exe -
Drops file in Program Files directory 2 IoCs
Processes:
vbc.exedescription ioc process File created C:\Program Files (x86)\WPA Host\wpahost.exe vbc.exe File opened for modification C:\Program Files (x86)\WPA Host\wpahost.exe vbc.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 1712 schtasks.exe 1772 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
vbc.exepid process 1324 vbc.exe 1324 vbc.exe 1324 vbc.exe 1324 vbc.exe 1324 vbc.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
vbc.exepid process 1324 vbc.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
vbc.exedescription pid process Token: SeDebugPrivilege 1324 vbc.exe -
Suspicious use of WriteProcessMemory 37 IoCs
Processes:
Payment_Confirmation pdf.exevbc.exedescription pid process target process PID 1080 wrote to memory of 1324 1080 Payment_Confirmation pdf.exe vbc.exe PID 1080 wrote to memory of 1324 1080 Payment_Confirmation pdf.exe vbc.exe PID 1080 wrote to memory of 1324 1080 Payment_Confirmation pdf.exe vbc.exe PID 1080 wrote to memory of 1324 1080 Payment_Confirmation pdf.exe vbc.exe PID 1080 wrote to memory of 1324 1080 Payment_Confirmation pdf.exe vbc.exe PID 1080 wrote to memory of 1324 1080 Payment_Confirmation pdf.exe vbc.exe PID 1080 wrote to memory of 1324 1080 Payment_Confirmation pdf.exe vbc.exe PID 1080 wrote to memory of 1324 1080 Payment_Confirmation pdf.exe vbc.exe PID 1080 wrote to memory of 1324 1080 Payment_Confirmation pdf.exe vbc.exe PID 1324 wrote to memory of 1772 1324 vbc.exe schtasks.exe PID 1324 wrote to memory of 1772 1324 vbc.exe schtasks.exe PID 1324 wrote to memory of 1772 1324 vbc.exe schtasks.exe PID 1324 wrote to memory of 1772 1324 vbc.exe schtasks.exe PID 1324 wrote to memory of 1712 1324 vbc.exe schtasks.exe PID 1324 wrote to memory of 1712 1324 vbc.exe schtasks.exe PID 1324 wrote to memory of 1712 1324 vbc.exe schtasks.exe PID 1324 wrote to memory of 1712 1324 vbc.exe schtasks.exe PID 1324 wrote to memory of 1276 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 1276 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 1276 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 1276 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 1276 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 1276 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 1276 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 1276 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 1276 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 1276 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 788 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 788 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 788 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 788 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 788 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 788 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 788 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 788 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 788 1324 vbc.exe vbc.exe PID 1324 wrote to memory of 788 1324 vbc.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Payment_Confirmation pdf.exe"C:\Users\Admin\AppData\Local\Temp\Payment_Confirmation pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- 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\tmp206C.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\tmp21D4.tmp"3⤵
- Creates scheduled task(s)
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\??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe"c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\ynwzs1qc.zes"3⤵
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\??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe"c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\tlwu0420.fl3"3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tlwu0420.fl3MD5
919e671c3d5959a91ef2d4c377d2b2ff
SHA1b1202b19512bbd390d3d5164792501c87bb42c41
SHA256d2e079df7cf6388315368ba79bf099ad2ff5428af51bf5abf2d99a2d7c5eb651
SHA512f3298256372beab8efe81b2e08d3b3869281f625de1ee13189c6b95eb2134d223df6f64cc9e490dd6b52a53aa936adc17bd5dfe4e50ee0fe420f3ebae276381c
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C:\Users\Admin\AppData\Local\Temp\tmp206C.tmpMD5
808c6e96c170c90d0db522e8947eb2bd
SHA144583694c3c23410d637bb96c0df0921363533ad
SHA256c6b75fb7740d34d55d74b8664ff1ea778638a4916c2b52348ea34de60edd3afc
SHA512928b85e9fddfd7c93623e954dc53367aaf355f74a14601d77e45612ebdb77f3d6c0fc853e154f91f61e64306361885467c16fc211cf1bbdc023658ad35dba1eb
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C:\Users\Admin\AppData\Local\Temp\tmp21D4.tmpMD5
819bdbdac3be050783d203020e6c4c30
SHA1a373521fceb21cac8b93e55ee48578e40a6e740b
SHA2560e5dedca6d0d3c50ebcedb5bbf51ef3d434eb6b43da46764205de7636131f053
SHA512cece1c4d8b4db79fc6e3cd225efaccdf9d2493f28991b1d48439944af38aaa61a215bd00a0beedcbdecc4f1ec5be0843774375a483f3d4a573a3980c54798cbd
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C:\Users\Admin\AppData\Local\Temp\ynwzs1qc.zesMD5
69b2a2e17e78d24abee9f1de2f04811a
SHA1d19c109704e83876ab3527457f9418a7d053aa33
SHA2561b1491f21e64681f8fdc27b2265e2274fb7813eecb6ad8b446d2e431f6300edd
SHA512eb7269979bc4187520636fe3d7b3089f2c7c02e81c4ce2a738ade680f72c61c67fe9577eeaa09d3ca93f34b60be8c434d2cfbfed6566e783f6611279f056150f
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memory/788-38-0x0000000000400000-0x0000000000453000-memory.dmpFilesize
332KB
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memory/788-36-0x0000000000400000-0x0000000000453000-memory.dmpFilesize
332KB
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memory/788-37-0x0000000000442628-mapping.dmp
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memory/1080-3-0x0000000000930000-0x0000000000931000-memory.dmpFilesize
4KB
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memory/1080-5-0x0000000000240000-0x0000000000252000-memory.dmpFilesize
72KB
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memory/1080-2-0x0000000074CF0000-0x00000000753DE000-memory.dmpFilesize
6.9MB
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memory/1232-39-0x000007FEF8040000-0x000007FEF82BA000-memory.dmpFilesize
2.5MB
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memory/1276-32-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1276-33-0x0000000000411654-mapping.dmp
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memory/1276-34-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1324-29-0x0000000000A60000-0x0000000000A6A000-memory.dmpFilesize
40KB
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memory/1324-21-0x0000000000570000-0x0000000000585000-memory.dmpFilesize
84KB
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memory/1324-30-0x0000000004F10000-0x0000000004F39000-memory.dmpFilesize
164KB
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memory/1324-22-0x0000000000660000-0x0000000000666000-memory.dmpFilesize
24KB
-
memory/1324-23-0x0000000000670000-0x000000000067C000-memory.dmpFilesize
48KB
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memory/1324-24-0x0000000000A10000-0x0000000000A17000-memory.dmpFilesize
28KB
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memory/1324-25-0x0000000000A20000-0x0000000000A26000-memory.dmpFilesize
24KB
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memory/1324-26-0x0000000000A30000-0x0000000000A3D000-memory.dmpFilesize
52KB
-
memory/1324-31-0x0000000000D90000-0x0000000000D9F000-memory.dmpFilesize
60KB
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memory/1324-28-0x0000000000A50000-0x0000000000A5F000-memory.dmpFilesize
60KB
-
memory/1324-6-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1324-20-0x0000000000550000-0x000000000055D000-memory.dmpFilesize
52KB
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memory/1324-27-0x0000000000A40000-0x0000000000A49000-memory.dmpFilesize
36KB
-
memory/1324-17-0x0000000000250000-0x0000000000255000-memory.dmpFilesize
20KB
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memory/1324-19-0x0000000000440000-0x0000000000443000-memory.dmpFilesize
12KB
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memory/1324-18-0x0000000000260000-0x0000000000279000-memory.dmpFilesize
100KB
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memory/1324-7-0x000000000041E792-mapping.dmp
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memory/1324-10-0x0000000074C70000-0x000000007535E000-memory.dmpFilesize
6.9MB
-
memory/1324-8-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1324-9-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1712-15-0x0000000000000000-mapping.dmp
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memory/1772-13-0x0000000000000000-mapping.dmp