Analysis Overview
SHA256
4e55885791569c17891d8620a28b7563f441e0c80e875df828b33a5a006d544a
Threat Level: Known bad
The file 29a0d1bc5abfbbf0bdf15ffa762cac27_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Remcos family
Remcos
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Adds Run key to start application
Program crash
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Modifies registry class
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-09 10:57
Signatures
Remcos family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-09 10:57
Reported
2024-05-09 10:59
Platform
win7-20240508-en
Max time kernel
141s
Max time network
141s
Command Line
Signatures
Remcos
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Local\Temp\29a0d1bc5abfbbf0bdf15ffa762cac27_JaffaCakes118.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\syscmd = "\"C:\\Users\\Admin\\AppData\\Roaming\\Syscmd\\syscmd.exe\"" | C:\Users\Admin\AppData\Local\Temp\29a0d1bc5abfbbf0bdf15ffa762cac27_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\syscmd = "\"C:\\Users\\Admin\\AppData\\Roaming\\Syscmd\\syscmd.exe\"" | C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\29a0d1bc5abfbbf0bdf15ffa762cac27_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\29a0d1bc5abfbbf0bdf15ffa762cac27_JaffaCakes118.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe"
C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe
C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
Network
| Country | Destination | Domain | Proto |
| FR | 195.154.242.51:2404 | tcp | |
| FR | 195.154.242.51:2404 | tcp | |
| FR | 195.154.242.51:2404 | tcp | |
| FR | 195.154.242.51:2404 | tcp | |
| FR | 195.154.242.51:2404 | tcp | |
| FR | 195.154.242.51:2404 | tcp |
Files
C:\Users\Admin\AppData\Local\Temp\install.vbs
| MD5 | a188db36cc78c3a687fefe769400911f |
| SHA1 | c76a6749da9941cabadbf26399ee950aa4dc2782 |
| SHA256 | 66ba60e9d8ecda66fcee8ce0a80855a67e14704f823d5c058751746208e7d4d3 |
| SHA512 | 9587847ede7ad801c22eb2d1c3ffdc09aec9fd249b5835ba40b75b150ae87982b13e7828cd9e11290db8a8e28dec02a1b3a712de9694a24349c75b190857f929 |
\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe
| MD5 | 29a0d1bc5abfbbf0bdf15ffa762cac27 |
| SHA1 | 76d716d41e3387f6a8854cdbda653efe844e2262 |
| SHA256 | 4e55885791569c17891d8620a28b7563f441e0c80e875df828b33a5a006d544a |
| SHA512 | 05dcf37e6425a932fe55099767aab0c4a6de6ee2b1fbf2abde61e442ef8dc4d71a3e3c88b75b54e3bc9c8864d65ff68c2ba3d4c718bf0b563f80ed9b7dfa3413 |
C:\Users\Admin\AppData\Roaming\Syscmd\logs.dat
| MD5 | 97333fd24793cb730455176fb32be9e4 |
| SHA1 | 48841d737f10581e514c5567afb1ac0f064f2794 |
| SHA256 | 86ce735e2ed2d9d33247810caba22af46933cdfa10479b0e08547c4395ea96ed |
| SHA512 | 6437981379ae9e312fb9dff5849a385ba95b71cbad70972988f48ce0d650626b7f6790dd5b6a05bd5549ee8d38b683f81e3c497cbdc7678b85f7bbb52cf8a844 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-09 10:57
Reported
2024-05-09 10:59
Platform
win10v2004-20240508-en
Max time kernel
93s
Max time network
96s
Command Line
Signatures
Remcos
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Local\Temp\29a0d1bc5abfbbf0bdf15ffa762cac27_JaffaCakes118.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\29a0d1bc5abfbbf0bdf15ffa762cac27_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\WScript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\syscmd = "\"C:\\Users\\Admin\\AppData\\Roaming\\Syscmd\\syscmd.exe\"" | C:\Users\Admin\AppData\Local\Temp\29a0d1bc5abfbbf0bdf15ffa762cac27_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\syscmd = "\"C:\\Users\\Admin\\AppData\\Roaming\\Syscmd\\syscmd.exe\"" | C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1996 set thread context of 1948 | N/A | C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\29a0d1bc5abfbbf0bdf15ffa762cac27_JaffaCakes118.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\29a0d1bc5abfbbf0bdf15ffa762cac27_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\29a0d1bc5abfbbf0bdf15ffa762cac27_JaffaCakes118.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe"
C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe
C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1948 -ip 1948
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1948 -s 536
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| BE | 2.17.196.113:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 113.196.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.15.31.184.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 77.190.18.2.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\install.vbs
| MD5 | a188db36cc78c3a687fefe769400911f |
| SHA1 | c76a6749da9941cabadbf26399ee950aa4dc2782 |
| SHA256 | 66ba60e9d8ecda66fcee8ce0a80855a67e14704f823d5c058751746208e7d4d3 |
| SHA512 | 9587847ede7ad801c22eb2d1c3ffdc09aec9fd249b5835ba40b75b150ae87982b13e7828cd9e11290db8a8e28dec02a1b3a712de9694a24349c75b190857f929 |
C:\Users\Admin\AppData\Roaming\Syscmd\syscmd.exe
| MD5 | 29a0d1bc5abfbbf0bdf15ffa762cac27 |
| SHA1 | 76d716d41e3387f6a8854cdbda653efe844e2262 |
| SHA256 | 4e55885791569c17891d8620a28b7563f441e0c80e875df828b33a5a006d544a |
| SHA512 | 05dcf37e6425a932fe55099767aab0c4a6de6ee2b1fbf2abde61e442ef8dc4d71a3e3c88b75b54e3bc9c8864d65ff68c2ba3d4c718bf0b563f80ed9b7dfa3413 |
memory/1948-9-0x0000000000400000-0x000000000041E000-memory.dmp