Analysis Overview
SHA256
49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2
Threat Level: Known bad
The file 49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2 was found to be: Known bad.
Malicious Activity Summary
Remcos
Remcos family
Adds policy Run key to start application
Executes dropped EXE
Checks computer location settings
Adds Run key to start application
Enumerates physical storage devices
Unsigned PE
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-10 14:11
Signatures
Remcos family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-10 14:11
Reported
2024-05-10 14:13
Platform
win10v2004-20240426-en
Max time kernel
149s
Max time network
126s
Command Line
Signatures
Remcos
Adds policy Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run | C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Edgeupdater = "\"C:\\ProgramData\\microsoftEdge\\Edgeupdater.exe\"" | C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run | C:\ProgramData\microsoftEdge\Edgeupdater.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Edgeupdater = "\"C:\\ProgramData\\microsoftEdge\\Edgeupdater.exe\"" | C:\ProgramData\microsoftEdge\Edgeupdater.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\WScript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\microsoftEdge\Edgeupdater.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Edgeupdater = "\"C:\\ProgramData\\microsoftEdge\\Edgeupdater.exe\"" | C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Edgeupdater = "\"C:\\ProgramData\\microsoftEdge\\Edgeupdater.exe\"" | C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Edgeupdater = "\"C:\\ProgramData\\microsoftEdge\\Edgeupdater.exe\"" | C:\ProgramData\microsoftEdge\Edgeupdater.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Edgeupdater = "\"C:\\ProgramData\\microsoftEdge\\Edgeupdater.exe\"" | C:\ProgramData\microsoftEdge\Edgeupdater.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe
"C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.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:\ProgramData\microsoftEdge\Edgeupdater.exe"
C:\ProgramData\microsoftEdge\Edgeupdater.exe
C:\ProgramData\microsoftEdge\Edgeupdater.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 77.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | rornfl12.duckdns.org | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| BE | 88.221.83.203:443 | www.bing.com | tcp |
| N/A | 127.0.0.1:2405 | tcp | |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 203.83.221.88.in-addr.arpa | udp |
| BE | 88.221.83.203:443 | www.bing.com | tcp |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:2405 | tcp | |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| N/A | 127.0.0.1:2405 | tcp | |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| US | 8.8.8.8:53 | rornfl12.duckdns.org | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| US | 52.111.227.11:443 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| US | 8.8.8.8:53 | rornfl12.duckdns.org | udp |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp |
Files
C:\Users\Admin\AppData\Local\Temp\install.vbs
| MD5 | 19f4614bb43cdf3e42d786d19a92f4ac |
| SHA1 | bd3fa3595e247387810e31b3d3fd4a08b54dacc7 |
| SHA256 | 1e9cb576fd6e7af381e5e24429a8a514d36aff8ed0f6f579c609cc646cbddcea |
| SHA512 | aa9611fa7d87c2237abeb9d23dd03da4250ba4192bdc276f4c6f3c8747ee8cb6768b160e843012d8c550e8c1744cbfb4746b1d928c66495aa08740f55092bcf4 |
C:\ProgramData\microsoftEdge\Edgeupdater.exe
| MD5 | 95939f7e0943f1428467c77c293e6036 |
| SHA1 | 892d0c06a2c9377b716e3e456c15fa0a5c2d070a |
| SHA256 | 49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2 |
| SHA512 | ad55cf00384915a788343eff3b54811050e3964f4c6598515465dce462bce71116fe52d03057ecf202fa08ef405df70c1bf07dfe65ccf37f3e58f16bf6e64f56 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-10 14:11
Reported
2024-05-10 14:13
Platform
win11-20240426-en
Max time kernel
149s
Max time network
126s
Command Line
Signatures
Remcos
Adds policy Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run | C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Edgeupdater = "\"C:\\ProgramData\\microsoftEdge\\Edgeupdater.exe\"" | C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run | C:\ProgramData\microsoftEdge\Edgeupdater.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Edgeupdater = "\"C:\\ProgramData\\microsoftEdge\\Edgeupdater.exe\"" | C:\ProgramData\microsoftEdge\Edgeupdater.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\microsoftEdge\Edgeupdater.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Edgeupdater = "\"C:\\ProgramData\\microsoftEdge\\Edgeupdater.exe\"" | C:\ProgramData\microsoftEdge\Edgeupdater.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000\Software\Microsoft\Windows\CurrentVersion\Run\Edgeupdater = "\"C:\\ProgramData\\microsoftEdge\\Edgeupdater.exe\"" | C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Edgeupdater = "\"C:\\ProgramData\\microsoftEdge\\Edgeupdater.exe\"" | C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000\Software\Microsoft\Windows\CurrentVersion\Run\Edgeupdater = "\"C:\\ProgramData\\microsoftEdge\\Edgeupdater.exe\"" | C:\ProgramData\microsoftEdge\Edgeupdater.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.exe
"C:\Users\Admin\AppData\Local\Temp\49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2.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:\ProgramData\microsoftEdge\Edgeupdater.exe"
C:\ProgramData\microsoftEdge\Edgeupdater.exe
C:\ProgramData\microsoftEdge\Edgeupdater.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | rornfl12.duckdns.org | udp |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| US | 8.8.8.8:53 | rornfl12.duckdns.org | udp |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| NL | 52.111.243.31:443 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp | |
| N/A | 127.0.0.1:2405 | tcp |
Files
C:\Users\Admin\AppData\Local\Temp\install.vbs
| MD5 | 19f4614bb43cdf3e42d786d19a92f4ac |
| SHA1 | bd3fa3595e247387810e31b3d3fd4a08b54dacc7 |
| SHA256 | 1e9cb576fd6e7af381e5e24429a8a514d36aff8ed0f6f579c609cc646cbddcea |
| SHA512 | aa9611fa7d87c2237abeb9d23dd03da4250ba4192bdc276f4c6f3c8747ee8cb6768b160e843012d8c550e8c1744cbfb4746b1d928c66495aa08740f55092bcf4 |
C:\ProgramData\microsoftEdge\Edgeupdater.exe
| MD5 | 95939f7e0943f1428467c77c293e6036 |
| SHA1 | 892d0c06a2c9377b716e3e456c15fa0a5c2d070a |
| SHA256 | 49f4cc2bea40cf52315aed5b939de396212e16902e5ea23ff699c372d609cbb2 |
| SHA512 | ad55cf00384915a788343eff3b54811050e3964f4c6598515465dce462bce71116fe52d03057ecf202fa08ef405df70c1bf07dfe65ccf37f3e58f16bf6e64f56 |