Analysis Overview
SHA256
1b0f0f68bba4c25b14187378bebf8db9dce85ec634e7375b53a287ad2dc12ea2
Threat Level: Known bad
The file tmp was found to be: Known bad.
Malicious Activity Summary
Nanocore family
NanoCore
Adds Run key to start application
Checks whether UAC is enabled
Drops file in Program Files directory
Unsigned PE
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-27 20:32
Signatures
Nanocore family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-27 20:32
Reported
2024-01-27 20:35
Platform
win7-20231215-en
Max time kernel
120s
Max time network
154s
Command Line
Signatures
NanoCore
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\LAN Monitor = "C:\\Program Files (x86)\\LAN Monitor\\lanmon.exe" | C:\Users\Admin\AppData\Local\Temp\tmp.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:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\LAN Monitor\lanmon.exe | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
| File opened for modification | C:\Program Files (x86)\LAN Monitor\lanmon.exe | C:\Users\Admin\AppData\Local\Temp\tmp.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:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2884 wrote to memory of 2736 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 2884 wrote to memory of 2736 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 2884 wrote to memory of 2736 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 2884 wrote to memory of 2736 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 2884 wrote to memory of 2784 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 2884 wrote to memory of 2784 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 2884 wrote to memory of 2784 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 2884 wrote to memory of 2784 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "LAN Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7A5E.tmp"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "LAN Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7C62.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | victacking.ddns.net | udp |
| GP | 90.15.154.112:4899 | victacking.ddns.net | tcp |
Files
memory/2884-0-0x0000000074670000-0x0000000074C1B000-memory.dmp
memory/2884-2-0x0000000000AA0000-0x0000000000AE0000-memory.dmp
memory/2884-1-0x0000000074670000-0x0000000074C1B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp7A5E.tmp
| MD5 | 3f4dcafa44c36f23e4db2b2315fd09da |
| SHA1 | 8c83089d6f6c887a77af9b42ca09969f3b2f83f6 |
| SHA256 | b8475eb97200b8a15eaf07e0a2cddc5c95e5bc3e7a98685364c9796480de57dc |
| SHA512 | e0624dd6cf0d5e014e96a323d2f7ebe13b683af71bd6ddafa3005cdc2f3c764cfca509262d442fc844b4b390d241ccf3eb36d30043d3d6f6e955a2ee9f792678 |
C:\Users\Admin\AppData\Local\Temp\tmp7C62.tmp
| MD5 | ecf141ec69adbb2a5c3dd5c85cd0ec39 |
| SHA1 | 0ad224632fa58d103142c05c44a142f3d7208291 |
| SHA256 | 64d8cfa0b25afee269839cd5fc0b66e5643bc318e5f4d3ce1b9dba2456c83316 |
| SHA512 | 4821b062d6672f3ed07833cfd7ab9abb533850b451b632d781fbfad8238fcd5ac52855f1f239547ae2d1c1477959f022430302a75cfd3c19a8473af72a1ef201 |
memory/2884-13-0x0000000074670000-0x0000000074C1B000-memory.dmp
memory/2884-14-0x0000000074670000-0x0000000074C1B000-memory.dmp
memory/2884-15-0x0000000000AA0000-0x0000000000AE0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-27 20:32
Reported
2024-01-27 20:35
Platform
win10v2004-20231222-en
Max time kernel
88s
Max time network
153s
Command Line
Signatures
NanoCore
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Subsystem = "C:\\Program Files (x86)\\SMTP Subsystem\\smtpss.exe" | C:\Users\Admin\AppData\Local\Temp\tmp.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:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\SMTP Subsystem\smtpss.exe | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
| File opened for modification | C:\Program Files (x86)\SMTP Subsystem\smtpss.exe | C:\Users\Admin\AppData\Local\Temp\tmp.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:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3056 wrote to memory of 2792 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 3056 wrote to memory of 2792 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 3056 wrote to memory of 2792 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 3056 wrote to memory of 1360 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 3056 wrote to memory of 1360 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 3056 wrote to memory of 1360 | N/A | C:\Users\Admin\AppData\Local\Temp\tmp.exe | C:\Windows\SysWOW64\schtasks.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp41FA.tmp"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "SMTP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4259.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | victacking.ddns.net | udp |
| GP | 90.15.154.112:4899 | victacking.ddns.net | tcp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 74.179.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 112.154.15.90.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.160.77.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.179.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
Files
memory/3056-0-0x0000000074DD0000-0x0000000075381000-memory.dmp
memory/3056-1-0x0000000074DD0000-0x0000000075381000-memory.dmp
memory/3056-2-0x00000000015D0000-0x00000000015E0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp41FA.tmp
| MD5 | 3f4dcafa44c36f23e4db2b2315fd09da |
| SHA1 | 8c83089d6f6c887a77af9b42ca09969f3b2f83f6 |
| SHA256 | b8475eb97200b8a15eaf07e0a2cddc5c95e5bc3e7a98685364c9796480de57dc |
| SHA512 | e0624dd6cf0d5e014e96a323d2f7ebe13b683af71bd6ddafa3005cdc2f3c764cfca509262d442fc844b4b390d241ccf3eb36d30043d3d6f6e955a2ee9f792678 |
C:\Users\Admin\AppData\Local\Temp\tmp4259.tmp
| MD5 | 0339b45ef206f4becc88be0d65e24b9e |
| SHA1 | 6503a1851f4ccd8c80a31f96bd7ae40d962c9fad |
| SHA256 | 3d568a47a8944a47f4aed6982755ac7ff7dda469cc1c81c213ecaa5d89de1f83 |
| SHA512 | c98f4513db34d50510dd986e0d812545c442bd5bef26932032b165759627fab4e00c95fe907ab3416a8a1042bfa77aa516c479f1ff7d1ec2f21ae66df8f72551 |
memory/3056-10-0x00000000015D0000-0x00000000015E0000-memory.dmp
memory/3056-19-0x0000000074DD0000-0x0000000075381000-memory.dmp
memory/3056-20-0x0000000074DD0000-0x0000000075381000-memory.dmp
memory/3056-21-0x00000000015D0000-0x00000000015E0000-memory.dmp
memory/3056-22-0x00000000015D0000-0x00000000015E0000-memory.dmp