Analysis Overview
SHA256
d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0
Threat Level: Known bad
The file d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0 was found to be: Known bad.
Malicious Activity Summary
NanoCore
UPX dump on OEP (original entry point)
UPX dump on OEP (original entry point)
UPX packed file
Drops startup file
Checks whether UAC is enabled
Adds Run key to start application
AutoIT Executable
Suspicious use of SetThreadContext
Drops file in Program Files directory
Unsigned PE
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of SendNotifyMessage
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of FindShellTrayWindow
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-29 02:40
Signatures
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
AutoIT Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-29 02:40
Reported
2024-04-29 02:42
Platform
win7-20240220-en
Max time kernel
134s
Max time network
143s
Command Line
Signatures
NanoCore
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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| N/A | N/A | N/A | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url | C:\Users\Admin\AppData\Local\Temp\d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
AutoIT Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1656 set thread context of 2528 | N/A | C:\Users\Admin\AppData\Local\Temp\d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\TCP Subsystem\tcpss.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
| File opened for modification | C:\Program Files (x86)\TCP Subsystem\tcpss.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe
"C:\Users\Admin\AppData\Local\Temp\d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp13DE.tmp"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp142D.tmp"
Network
| Country | Destination | Domain | Proto |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp |
Files
memory/1656-0-0x0000000001140000-0x0000000001288000-memory.dmp
memory/1656-1-0x0000000001140000-0x0000000001288000-memory.dmp
memory/1656-2-0x0000000001140000-0x0000000001288000-memory.dmp
memory/1656-3-0x0000000001140000-0x0000000001288000-memory.dmp
memory/1656-4-0x0000000001140000-0x0000000001288000-memory.dmp
memory/1656-5-0x0000000001140000-0x0000000001288000-memory.dmp
memory/1656-6-0x0000000001140000-0x0000000001288000-memory.dmp
memory/1656-7-0x00000000000B0000-0x00000000000B1000-memory.dmp
memory/2528-8-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2528-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2528-16-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2528-15-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2528-9-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2528-17-0x00000000740A0000-0x000000007464B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp13DE.tmp
| MD5 | c6f0625bf4c1cdfb699980c9243d3b22 |
| SHA1 | 43de1fe580576935516327f17b5da0c656c72851 |
| SHA256 | 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576 |
| SHA512 | 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969 |
C:\Users\Admin\AppData\Local\Temp\tmp142D.tmp
| MD5 | 4b7ef560289c0f62d0baf6f14f48a57a |
| SHA1 | 8331acb90dde588aa3196919f6e847f398fd06d1 |
| SHA256 | 062844155306130d6fafc4fe10ac9e5ddd2ed462532b729c50cdc979c0d83207 |
| SHA512 | ecaa27c4b703d95f9f9b37d8c339982970482e7dab968c2010e0aa644bbfa31973111aafb827565af30c423d1d14e4ff997ec149614e713ff7ef3456894d02d8 |
memory/1656-25-0x0000000001140000-0x0000000001288000-memory.dmp
memory/1656-26-0x0000000001140000-0x0000000001288000-memory.dmp
memory/1656-31-0x0000000001140000-0x0000000001288000-memory.dmp
memory/2528-32-0x00000000740A0000-0x000000007464B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-29 02:40
Reported
2024-04-29 02:42
Platform
win10v2004-20240419-en
Max time kernel
135s
Max time network
143s
Command Line
Signatures
NanoCore
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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| N/A | N/A | N/A | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url | C:\Users\Admin\AppData\Local\Temp\d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\LAN Subsystem = "C:\\Program Files (x86)\\LAN Subsystem\\lanss.exe" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
AutoIT Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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| N/A | N/A | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1204 set thread context of 4844 | N/A | C:\Users\Admin\AppData\Local\Temp\d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\LAN Subsystem\lanss.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
| File opened for modification | C:\Program Files (x86)\LAN Subsystem\lanss.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe
"C:\Users\Admin\AppData\Local\Temp\d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "LAN Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3BBC.tmp"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "LAN Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3C0B.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp |
Files
memory/1204-0-0x0000000000E90000-0x0000000000FD8000-memory.dmp
memory/1204-1-0x0000000000E90000-0x0000000000FD8000-memory.dmp
memory/1204-2-0x0000000000E90000-0x0000000000FD8000-memory.dmp
memory/1204-3-0x0000000000E90000-0x0000000000FD8000-memory.dmp
memory/1204-4-0x0000000000E90000-0x0000000000FD8000-memory.dmp
memory/1204-5-0x0000000000E90000-0x0000000000FD8000-memory.dmp
memory/1204-6-0x0000000000E90000-0x0000000000FD8000-memory.dmp
memory/1204-7-0x00000000005B0000-0x00000000005B1000-memory.dmp
memory/4844-9-0x0000000000410000-0x0000000000448000-memory.dmp
memory/4844-13-0x0000000073FE0000-0x0000000074591000-memory.dmp
memory/4844-15-0x0000000073FE0000-0x0000000074591000-memory.dmp
memory/4844-14-0x00000000005B0000-0x00000000005C0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp3BBC.tmp
| MD5 | c6f0625bf4c1cdfb699980c9243d3b22 |
| SHA1 | 43de1fe580576935516327f17b5da0c656c72851 |
| SHA256 | 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576 |
| SHA512 | 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969 |
C:\Users\Admin\AppData\Local\Temp\tmp3C0B.tmp
| MD5 | 924694e208642d4d8a4c7e0f0cba0de1 |
| SHA1 | 87e9496a918036c3e3902f125b95a47e38548828 |
| SHA256 | 8de0bab59a9fe15f312e81a373382ed992ce5110deb3813f663b92cfc5eae0b6 |
| SHA512 | ef3cfc08df53777f13fb51fdc0269f6f686c0df57c4dd72f395dc53d1d8ef2b08e33c3601507a45c3cc31a25b70ebf365d0fa93db64e1e851173216a45c49c2c |
memory/1204-23-0x0000000000E90000-0x0000000000FD8000-memory.dmp
memory/1204-24-0x0000000000E90000-0x0000000000FD8000-memory.dmp
memory/1204-28-0x0000000000E90000-0x0000000000FD8000-memory.dmp
memory/4844-29-0x0000000073FE0000-0x0000000074591000-memory.dmp
memory/4844-30-0x00000000005B0000-0x00000000005C0000-memory.dmp