Analysis Overview
SHA256
2ffdff45aa288f6e09815e6072a24920ef00761c92680a8acb0e43d88fb39354
Threat Level: Known bad
The file b20de7039fc71d94e134125c77cd005f_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
NanoCore
Checks computer location settings
Adds Run key to start application
Suspicious use of SetThreadContext
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-16 06:07
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-16 06:07
Reported
2024-06-16 06:10
Platform
win7-20240221-en
Max time kernel
149s
Max time network
150s
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\NAS Host = "C:\\Program Files (x86)\\NAS Host\\nashost.exe" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 636 set thread context of 2584 | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\NAS Host\nashost.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
| File opened for modification | C:\Program Files (x86)\NAS Host\nashost.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
Enumerates physical storage devices
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\installutil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b20de7039fc71d94e134125c77cd005f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b20de7039fc71d94e134125c77cd005f_JaffaCakes118.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe" /logtoconsole=false /logfile= /u "C:\Users\Admin\AppData\Local\Temp\b20de7039fc71d94e134125c77cd005f_JaffaCakes118.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "NAS Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA8CD.tmp"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "NAS Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA97A.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp |
Files
memory/2224-0-0x0000000074711000-0x0000000074712000-memory.dmp
memory/2224-1-0x0000000074710000-0x0000000074CBB000-memory.dmp
memory/2224-2-0x0000000074710000-0x0000000074CBB000-memory.dmp
memory/2224-3-0x0000000074710000-0x0000000074CBB000-memory.dmp
memory/636-4-0x0000000074710000-0x0000000074CBB000-memory.dmp
memory/636-5-0x0000000074710000-0x0000000074CBB000-memory.dmp
memory/2584-8-0x0000000000090000-0x00000000000C8000-memory.dmp
memory/2584-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2584-27-0x0000000074710000-0x0000000074CBB000-memory.dmp
memory/636-26-0x0000000074710000-0x0000000074CBB000-memory.dmp
memory/2584-25-0x0000000000090000-0x00000000000C8000-memory.dmp
memory/2584-22-0x0000000000090000-0x00000000000C8000-memory.dmp
memory/2584-18-0x0000000000090000-0x00000000000C8000-memory.dmp
memory/2584-17-0x0000000000090000-0x00000000000C8000-memory.dmp
memory/2584-12-0x0000000000090000-0x00000000000C8000-memory.dmp
memory/2584-10-0x0000000000090000-0x00000000000C8000-memory.dmp
memory/2584-6-0x0000000000090000-0x00000000000C8000-memory.dmp
memory/2584-28-0x0000000074710000-0x0000000074CBB000-memory.dmp
memory/2584-29-0x0000000074710000-0x0000000074CBB000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpA8CD.tmp
| MD5 | 776580d2028b74ed89bb21146482bdff |
| SHA1 | d1a45290dedde63d8539a2fc8af866b430238bc7 |
| SHA256 | fbad359469fc6aefb5695d01974f4edf50528f51f80d57b9eb0d8f2f81033cc0 |
| SHA512 | de084f473db26ce159b639b02e7ffa263ae5b6c4c1da9f6932676dae4a6c65f082b1bcac673c45c2e2b84caa06d1860ea6f0545b81fd7b3e4f8fe5e802a160d3 |
C:\Users\Admin\AppData\Local\Temp\tmpA97A.tmp
| MD5 | 9f554f602c22cfc20079e966d177fadb |
| SHA1 | 789baa3425849bf239e47c6bcf352e6693a8c337 |
| SHA256 | 4c760d5fe0c06cf4bf554170870f41181c61a217c37eb826903094dda86dd1f1 |
| SHA512 | b83e3e97dbe38ec4c64d9bef65e2521416f2d7434d78d05e66f729a2e0fbfea3f9bc6f6c4abaf76555af89a9565dfc0853d99067be9042dd66ed6246696eecbb |
memory/2584-37-0x0000000074710000-0x0000000074CBB000-memory.dmp
memory/2584-38-0x0000000074710000-0x0000000074CBB000-memory.dmp
memory/2584-39-0x0000000074710000-0x0000000074CBB000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-16 06:07
Reported
2024-06-16 06:10
Platform
win10v2004-20240508-en
Max time kernel
149s
Max time network
151s
Command Line
Signatures
NanoCore
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\b20de7039fc71d94e134125c77cd005f_JaffaCakes118.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Service = "C:\\Program Files (x86)\\DHCP Service\\dhcpsv.exe" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4180 set thread context of 1456 | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\DHCP Service\dhcpsv.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
| File opened for modification | C:\Program Files (x86)\DHCP Service\dhcpsv.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
Enumerates physical storage devices
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\installutil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b20de7039fc71d94e134125c77cd005f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b20de7039fc71d94e134125c77cd005f_JaffaCakes118.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe" /logtoconsole=false /logfile= /u "C:\Users\Admin\AppData\Local\Temp\b20de7039fc71d94e134125c77cd005f_JaffaCakes118.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "DHCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC1C9.tmp"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "DHCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC238.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp | |
| US | 181.215.247.70:3031 | tcp |
Files
memory/4328-0-0x0000000075412000-0x0000000075413000-memory.dmp
memory/4328-1-0x0000000075410000-0x00000000759C1000-memory.dmp
memory/4328-2-0x0000000075410000-0x00000000759C1000-memory.dmp
memory/4328-4-0x0000000075410000-0x00000000759C1000-memory.dmp
memory/4180-5-0x0000000075410000-0x00000000759C1000-memory.dmp
memory/4180-6-0x0000000075410000-0x00000000759C1000-memory.dmp
memory/4180-7-0x0000000075410000-0x00000000759C1000-memory.dmp
memory/4180-8-0x0000000075410000-0x00000000759C1000-memory.dmp
memory/4180-9-0x0000000075410000-0x00000000759C1000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\installutil.exe.log
| MD5 | 7a4a84f4d2df1fe011638038702dad89 |
| SHA1 | 64e9856d95b2064ff51e1c77819c818e6e5b3291 |
| SHA256 | cfd5734d90e6889355768ae5a723076000d88af2e5b6b435d55fa5bfa3e29590 |
| SHA512 | cbe9f7724806d161e70a161525c89199e10e6f38ad425533defaa1e02a12bf2cf28cba6788ed68e446cbd4286541e341b55c40133c134f9fcf94cae79b34092d |
memory/4180-12-0x0000000075410000-0x00000000759C1000-memory.dmp
memory/1456-13-0x0000000075410000-0x00000000759C1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpC1C9.tmp
| MD5 | 776580d2028b74ed89bb21146482bdff |
| SHA1 | d1a45290dedde63d8539a2fc8af866b430238bc7 |
| SHA256 | fbad359469fc6aefb5695d01974f4edf50528f51f80d57b9eb0d8f2f81033cc0 |
| SHA512 | de084f473db26ce159b639b02e7ffa263ae5b6c4c1da9f6932676dae4a6c65f082b1bcac673c45c2e2b84caa06d1860ea6f0545b81fd7b3e4f8fe5e802a160d3 |
C:\Users\Admin\AppData\Local\Temp\tmpC238.tmp
| MD5 | a77c223a0fc492dccd6fb9975f7a8766 |
| SHA1 | 5e813636ae9b8138d78919348a5da3a6e8bd74b5 |
| SHA256 | 589df7325d42409c50827600fedb240171ee4bdab85916474a37800c2382829e |
| SHA512 | 315cea8fde3c594404f5d3c96c710af1214cff6d08ccdb40634a739e108ff810e02624735a2b8c3e3720157b4a55327f317c3c23c3a681b46b9ab0f19060f7c0 |
memory/1456-21-0x0000000075410000-0x00000000759C1000-memory.dmp