Analysis
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max time kernel
127s -
max time network
163s -
platform
windows7_x64 -
resource
win7-en-20210920 -
submitted
14-10-2021 14:54
Static task
static1
Behavioral task
behavioral1
Sample
31578_Invoice_receipt.exe
Resource
win7-en-20210920
General
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Target
31578_Invoice_receipt.exe
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Size
763KB
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MD5
182b6a3b80b6290f55b6670edf9efd0e
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SHA1
f6e60d4d0be6547af5822760bc0c0195884b012d
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SHA256
12b9d16dc98af934b38e22cf08b7c10cb55bfd8bbb3084dcf5699eb0ab35a073
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SHA512
1aebfcb9df20cc07c3bff03e1294fe479910bfb9b169e1aa895702f9210f19e4993470b5bf08c1181952facca3ad8689031361abe7768d57515c50d31607407a
Malware Config
Extracted
nanocore
1.2.2.0
sunnysept.duckdns.org:5500
af905a54-91e0-44a6-90a1-2d1125da804b
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activate_away_mode
true
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backup_connection_host
sunnysept.duckdns.org
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2021-06-21T21:09:02.390615436Z
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bypass_user_account_control
true
- 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
5500
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default_group
septe123
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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
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
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mutex
af905a54-91e0-44a6-90a1-2d1125da804b
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mutex_timeout
5000
-
prevent_system_sleep
false
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primary_connection_host
sunnysept.duckdns.org
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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
true
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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
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wan_timeout
8000
Signatures
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suricata: ET MALWARE Possible NanoCore C2 60B
suricata: ET MALWARE Possible NanoCore C2 60B
-
Processes:
31578_Invoice_receipt.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths 31578_Invoice_receipt.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions 31578_Invoice_receipt.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\Microsoft.NET\Framework\鑮鑙鑠鐪鑙鐧鑂鐰鑘鑙鐯鑜鐪鑋鑘\svchost.exe = "0" 31578_Invoice_receipt.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\31578_Invoice_receipt.exe = "0" 31578_Invoice_receipt.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
31578_Invoice_receipt.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\碹磺磲磑磩磿碸磨磆碶碼磪碶磧碵 = "C:\\Windows\\Microsoft.NET\\Framework\\鑮鑙鑠鐪鑙鐧鑂鐰鑘鑙鐯鑜鐪鑋鑘\\svchost.exe" 31578_Invoice_receipt.exe -
Processes:
31578_Invoice_receipt.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 31578_Invoice_receipt.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs
Processes:
31578_Invoice_receipt.exepid process 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
31578_Invoice_receipt.exedescription pid process target process PID 1432 set thread context of 1120 1432 31578_Invoice_receipt.exe 31578_Invoice_receipt.exe -
Drops file in Windows directory 2 IoCs
Processes:
31578_Invoice_receipt.exedescription ioc process File created C:\Windows\Microsoft.NET\Framework\鑮鑙鑠鐪鑙鐧鑂鐰鑘鑙鐯鑜鐪鑋鑘\svchost.exe 31578_Invoice_receipt.exe File opened for modification C:\Windows\Microsoft.NET\Framework\鑮鑙鑠鐪鑙鐧鑂鐰鑘鑙鐯鑜鐪鑋鑘\svchost.exe 31578_Invoice_receipt.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1664 1432 WerFault.exe 31578_Invoice_receipt.exe -
Suspicious behavior: EnumeratesProcesses 20 IoCs
Processes:
31578_Invoice_receipt.exeWerFault.exe31578_Invoice_receipt.exepowershell.exepowershell.exepowershell.exepid process 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1432 31578_Invoice_receipt.exe 1664 WerFault.exe 1664 WerFault.exe 1664 WerFault.exe 1664 WerFault.exe 1664 WerFault.exe 1120 31578_Invoice_receipt.exe 1120 31578_Invoice_receipt.exe 1120 31578_Invoice_receipt.exe 1120 31578_Invoice_receipt.exe 1120 31578_Invoice_receipt.exe 1120 31578_Invoice_receipt.exe 1168 powershell.exe 564 powershell.exe 1820 powershell.exe 1120 31578_Invoice_receipt.exe 1120 31578_Invoice_receipt.exe 1120 31578_Invoice_receipt.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
Processes:
31578_Invoice_receipt.exeWerFault.exepid process 1120 31578_Invoice_receipt.exe 1664 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
31578_Invoice_receipt.exeWerFault.exe31578_Invoice_receipt.exepowershell.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 1432 31578_Invoice_receipt.exe Token: SeDebugPrivilege 1664 WerFault.exe Token: SeDebugPrivilege 1120 31578_Invoice_receipt.exe Token: SeDebugPrivilege 1168 powershell.exe Token: SeDebugPrivilege 564 powershell.exe Token: SeDebugPrivilege 1820 powershell.exe -
Suspicious use of WriteProcessMemory 25 IoCs
Processes:
31578_Invoice_receipt.exedescription pid process target process PID 1432 wrote to memory of 564 1432 31578_Invoice_receipt.exe powershell.exe PID 1432 wrote to memory of 564 1432 31578_Invoice_receipt.exe powershell.exe PID 1432 wrote to memory of 564 1432 31578_Invoice_receipt.exe powershell.exe PID 1432 wrote to memory of 564 1432 31578_Invoice_receipt.exe powershell.exe PID 1432 wrote to memory of 1820 1432 31578_Invoice_receipt.exe powershell.exe PID 1432 wrote to memory of 1820 1432 31578_Invoice_receipt.exe powershell.exe PID 1432 wrote to memory of 1820 1432 31578_Invoice_receipt.exe powershell.exe PID 1432 wrote to memory of 1820 1432 31578_Invoice_receipt.exe powershell.exe PID 1432 wrote to memory of 1168 1432 31578_Invoice_receipt.exe powershell.exe PID 1432 wrote to memory of 1168 1432 31578_Invoice_receipt.exe powershell.exe PID 1432 wrote to memory of 1168 1432 31578_Invoice_receipt.exe powershell.exe PID 1432 wrote to memory of 1168 1432 31578_Invoice_receipt.exe powershell.exe PID 1432 wrote to memory of 1120 1432 31578_Invoice_receipt.exe 31578_Invoice_receipt.exe PID 1432 wrote to memory of 1120 1432 31578_Invoice_receipt.exe 31578_Invoice_receipt.exe PID 1432 wrote to memory of 1120 1432 31578_Invoice_receipt.exe 31578_Invoice_receipt.exe PID 1432 wrote to memory of 1120 1432 31578_Invoice_receipt.exe 31578_Invoice_receipt.exe PID 1432 wrote to memory of 1120 1432 31578_Invoice_receipt.exe 31578_Invoice_receipt.exe PID 1432 wrote to memory of 1120 1432 31578_Invoice_receipt.exe 31578_Invoice_receipt.exe PID 1432 wrote to memory of 1120 1432 31578_Invoice_receipt.exe 31578_Invoice_receipt.exe PID 1432 wrote to memory of 1120 1432 31578_Invoice_receipt.exe 31578_Invoice_receipt.exe PID 1432 wrote to memory of 1120 1432 31578_Invoice_receipt.exe 31578_Invoice_receipt.exe PID 1432 wrote to memory of 1664 1432 31578_Invoice_receipt.exe WerFault.exe PID 1432 wrote to memory of 1664 1432 31578_Invoice_receipt.exe WerFault.exe PID 1432 wrote to memory of 1664 1432 31578_Invoice_receipt.exe WerFault.exe PID 1432 wrote to memory of 1664 1432 31578_Invoice_receipt.exe WerFault.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\31578_Invoice_receipt.exe"C:\Users\Admin\AppData\Local\Temp\31578_Invoice_receipt.exe"1⤵
- Windows security modification
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1432 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Microsoft.NET\Framework\鑮鑙鑠鐪鑙鐧鑂鐰鑘鑙鐯鑜鐪鑋鑘\svchost.exe" -Force2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:564 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\31578_Invoice_receipt.exe" -Force2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1820 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Microsoft.NET\Framework\鑮鑙鑠鐪鑙鐧鑂鐰鑘鑙鐯鑜鐪鑋鑘\svchost.exe" -Force2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1168 -
C:\Users\Admin\AppData\Local\Temp\31578_Invoice_receipt.exe"C:\Users\Admin\AppData\Local\Temp\31578_Invoice_receipt.exe"2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1120 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1432 -s 15602⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1664
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-msMD5
e1371c80a525f61006d03b3d5de5d79c
SHA1fd7fdb33f74ee0fdade8cbcb34a622273d3a7e64
SHA2568a054a23527dff196debe3036a7cb2e54c42632c5fca8da8a7009e5f77c91432
SHA5127454439508883c6ce96d4fb5ce251310d7d20fd178197cc5f8ad3401f557689ca86df526baa62dd52746aee58177b5240f81593eb70a1b54fd08fce472622a7d
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memory/564-84-0x00000000024B2000-0x00000000024B4000-memory.dmpFilesize
8KB
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memory/564-83-0x00000000024B1000-0x00000000024B2000-memory.dmpFilesize
4KB
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memory/564-76-0x00000000024B0000-0x00000000024B1000-memory.dmpFilesize
4KB
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memory/564-59-0x0000000000000000-mapping.dmp
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memory/1120-86-0x00000000005D0000-0x00000000005E5000-memory.dmpFilesize
84KB
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memory/1120-89-0x0000000000940000-0x0000000000946000-memory.dmpFilesize
24KB
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memory/1120-65-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1120-66-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1120-67-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1120-69-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1120-68-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1120-70-0x000000000041E792-mapping.dmp
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memory/1120-71-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/1120-96-0x0000000002180000-0x000000000218F000-memory.dmpFilesize
60KB
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memory/1120-74-0x0000000002200000-0x0000000002201000-memory.dmpFilesize
4KB
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memory/1120-95-0x0000000002110000-0x0000000002139000-memory.dmpFilesize
164KB
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memory/1120-94-0x0000000002070000-0x000000000207A000-memory.dmpFilesize
40KB
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memory/1120-93-0x0000000002060000-0x000000000206F000-memory.dmpFilesize
60KB
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memory/1120-92-0x0000000002050000-0x0000000002059000-memory.dmpFilesize
36KB
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memory/1120-79-0x0000000000290000-0x0000000000295000-memory.dmpFilesize
20KB
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memory/1120-80-0x00000000002A0000-0x00000000002B9000-memory.dmpFilesize
100KB
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memory/1120-81-0x00000000002C0000-0x00000000002C3000-memory.dmpFilesize
12KB
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memory/1120-91-0x0000000002000000-0x000000000200D000-memory.dmpFilesize
52KB
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memory/1120-90-0x0000000001FF0000-0x0000000001FF7000-memory.dmpFilesize
28KB
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memory/1120-88-0x0000000000820000-0x000000000082C000-memory.dmpFilesize
48KB
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memory/1120-85-0x00000000003E0000-0x00000000003ED000-memory.dmpFilesize
52KB
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memory/1120-87-0x0000000000810000-0x0000000000816000-memory.dmpFilesize
24KB
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memory/1168-61-0x0000000000000000-mapping.dmp
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memory/1168-77-0x0000000002530000-0x000000000317A000-memory.dmpFilesize
12.3MB
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memory/1432-54-0x0000000000990000-0x0000000000991000-memory.dmpFilesize
4KB
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memory/1432-57-0x0000000004BA0000-0x0000000004BA1000-memory.dmpFilesize
4KB
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memory/1432-56-0x00000000768C1000-0x00000000768C3000-memory.dmpFilesize
8KB
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memory/1432-58-0x00000000001D0000-0x0000000000260000-memory.dmpFilesize
576KB
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memory/1664-82-0x00000000003B0000-0x00000000003B1000-memory.dmpFilesize
4KB
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memory/1664-75-0x0000000000000000-mapping.dmp
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memory/1820-78-0x00000000022F0000-0x0000000002F3A000-memory.dmpFilesize
12.3MB
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memory/1820-60-0x0000000000000000-mapping.dmp