Analysis Overview
SHA256
a2251164857af32d0a13d3d91c9cb17af07f5858ad935c666a4787f12d585622
Threat Level: Known bad
The file Builder.exe was found to be: Known bad.
Malicious Activity Summary
AsyncRat
Async RAT payload
Asyncrat family
Stormkitty family
StormKitty
StormKitty payload
Reads user/profile data of web browsers
Legitimate hosting services abused for malware hosting/C2
Looks up geolocation information via web service
Looks up external IP address via web service
Drops desktop.ini file(s)
Unsigned PE
Event Triggered Execution: Netsh Helper DLL
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-07-07 16:05
Signatures
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Asyncrat family
StormKitty payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Stormkitty family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-07 16:05
Reported
2024-07-07 18:16
Platform
win10v2004-20240704-en
Max time kernel
595s
Max time network
434s
Command Line
Signatures
AsyncRat
StormKitty
StormKitty payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Reads user/profile data of web browsers
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini | C:\Users\Admin\AppData\Local\Temp\Builder.exe | N/A |
| File created | C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini | C:\Users\Admin\AppData\Local\Temp\Builder.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini | C:\Users\Admin\AppData\Local\Temp\Builder.exe | N/A |
| File created | C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini | C:\Users\Admin\AppData\Local\Temp\Builder.exe | N/A |
| File created | C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini | C:\Users\Admin\AppData\Local\Temp\Builder.exe | N/A |
| File created | C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini | C:\Users\Admin\AppData\Local\Temp\Builder.exe | N/A |
| File created | C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini | C:\Users\Admin\AppData\Local\Temp\Builder.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini | C:\Users\Admin\AppData\Local\Temp\Builder.exe | N/A |
| File created | C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini | C:\Users\Admin\AppData\Local\Temp\Builder.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | pastebin.com | N/A | N/A |
| N/A | pastebin.com | N/A | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | icanhazip.com | N/A | N/A |
Looks up geolocation information via web service
Event Triggered Execution: Netsh Helper DLL
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key queried | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key value enumerated | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key queried | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key value enumerated | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\Builder.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\Builder.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Builder.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\Builder.exe
"C:\Users\Admin\AppData\Local\Temp\Builder.exe"
C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
C:\Windows\SysWOW64\chcp.com
chcp 65001
C:\Windows\SysWOW64\netsh.exe
netsh wlan show profile
C:\Windows\SysWOW64\findstr.exe
findstr All
C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
C:\Windows\SysWOW64\chcp.com
chcp 65001
C:\Windows\SysWOW64\netsh.exe
netsh wlan show networks mode=bssid
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 44.56.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | icanhazip.com | udp |
| US | 104.16.185.241:80 | icanhazip.com | tcp |
| US | 8.8.8.8:53 | api.mylnikov.org | udp |
| US | 104.21.44.66:443 | api.mylnikov.org | tcp |
| US | 8.8.8.8:53 | 241.185.16.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | api.telegram.org | udp |
| NL | 149.154.167.220:443 | api.telegram.org | tcp |
| US | 8.8.8.8:53 | 66.44.21.104.in-addr.arpa | udp |
| NL | 149.154.167.220:443 | api.telegram.org | tcp |
| US | 8.8.8.8:53 | 220.167.154.149.in-addr.arpa | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 172.67.19.24:443 | pastebin.com | tcp |
| US | 8.8.8.8:53 | 24.19.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| US | 8.8.8.8:53 | 35.56.20.217.in-addr.arpa | udp |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| US | 8.8.8.8:53 | 2.173.189.20.in-addr.arpa | udp |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:7707 | tcp | |
| N/A | 127.0.0.1:8808 | tcp | |
| N/A | 127.0.0.1:6606 | tcp | |
| N/A | 127.0.0.1:6606 | tcp |
Files
memory/1552-0-0x0000000074E7E000-0x0000000074E7F000-memory.dmp
memory/1552-1-0x0000000000600000-0x000000000064A000-memory.dmp
memory/1552-2-0x0000000074E70000-0x0000000075620000-memory.dmp
memory/1552-3-0x0000000005020000-0x0000000005086000-memory.dmp
C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Browsers\Firefox\Bookmarks.txt
| MD5 | 2e9d094dda5cdc3ce6519f75943a4ff4 |
| SHA1 | 5d989b4ac8b699781681fe75ed9ef98191a5096c |
| SHA256 | c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142 |
| SHA512 | d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7 |
C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\System\Process.txt
| MD5 | eb53dbbf37fd80b0ab424f0af57a5544 |
| SHA1 | 76e3df3dc8e849f2f951f04e85de2b7f3794c9f7 |
| SHA256 | 58d404284bbffc77ac2806915f40b816a48334f07f00694c1cf9cb38b0701591 |
| SHA512 | 35800bda02f51df49893ba45e9e4e2d8d554e67c8aa2d3c3ff251a634e062ec7dfc5179a937ac1290ebbd32af1ccd0d753160d463699d6c8ceec5241109eec00 |
memory/1552-144-0x0000000074E70000-0x0000000075620000-memory.dmp
memory/1552-146-0x0000000005870000-0x0000000005902000-memory.dmp
memory/1552-147-0x0000000005FC0000-0x0000000006564000-memory.dmp
memory/1552-151-0x0000000005A80000-0x0000000005A8A000-memory.dmp
C:\Users\Admin\AppData\Local\4525e4682b3120724e35be72cf8daeee\msgid.dat
| MD5 | cfcd208495d565ef66e7dff9f98764da |
| SHA1 | b6589fc6ab0dc82cf12099d1c2d40ab994e8410c |
| SHA256 | 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9 |
| SHA512 | 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99 |
memory/1552-157-0x0000000005C70000-0x0000000005C82000-memory.dmp
memory/1552-180-0x0000000074E7E000-0x0000000074E7F000-memory.dmp
memory/1552-181-0x0000000074E70000-0x0000000075620000-memory.dmp
memory/1552-182-0x0000000074E70000-0x0000000075620000-memory.dmp