Analysis Overview
SHA256
f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb
Threat Level: Known bad
The file f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe was found to be: Known bad.
Malicious Activity Summary
Guloader family
Guloader,Cloudeye
Loads dropped DLL
Drops file in Program Files directory
Drops file in Windows directory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-07 03:31
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-07 03:31
Reported
2024-11-07 03:33
Platform
win7-20240903-en
Max time kernel
117s
Max time network
117s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Common Files\customization.rom | C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\resources\primy.ini | C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe
"C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe"
Network
Files
C:\Windows\Resources\primy.ini
| MD5 | 76d9175a3db7407eb0bfc3c07ddcd9d2 |
| SHA1 | 72071127e9a44935cb02650ed715ccaf6a8f8418 |
| SHA256 | 1f7119996dd17af05bf05e497104715bbbc3909676afa4329fbd59502be1a1a5 |
| SHA512 | 5032dab71e70a4bd1dad2f5cf9380e0097be7993bc46886fed6e4bdd8781f2b10d31338d90d0dc5804665bda2cbfe93f1172250e1a8ab7c9118baf9f156e3c69 |
\Users\Admin\AppData\Local\Temp\nsyDE8D.tmp\System.dll
| MD5 | 192639861e3dc2dc5c08bb8f8c7260d5 |
| SHA1 | 58d30e460609e22fa0098bc27d928b689ef9af78 |
| SHA256 | 23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6 |
| SHA512 | 6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc |
memory/2228-23239-0x0000000003280000-0x0000000004035000-memory.dmp
memory/2228-23242-0x0000000003280000-0x0000000004035000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-07 03:31
Reported
2024-11-07 03:33
Platform
win10v2004-20241007-en
Max time kernel
10s
Max time network
151s
Command Line
Signatures
Guloader family
Guloader,Cloudeye
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Common Files\customization.rom | C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\resources\primy.ini | C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe | N/A |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe
"C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe"
C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe
"C:\Users\Admin\AppData\Local\Temp\f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4972 -ip 4972
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 1068
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 212.20.149.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.117.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | comercializadoradeinsumos.cl | udp |
| US | 162.240.106.189:443 | comercializadoradeinsumos.cl | tcp |
| US | 8.8.8.8:53 | 189.106.240.162.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 32.169.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.65.42.20.in-addr.arpa | udp |
Files
C:\Windows\Resources\primy.ini
| MD5 | 76d9175a3db7407eb0bfc3c07ddcd9d2 |
| SHA1 | 72071127e9a44935cb02650ed715ccaf6a8f8418 |
| SHA256 | 1f7119996dd17af05bf05e497104715bbbc3909676afa4329fbd59502be1a1a5 |
| SHA512 | 5032dab71e70a4bd1dad2f5cf9380e0097be7993bc46886fed6e4bdd8781f2b10d31338d90d0dc5804665bda2cbfe93f1172250e1a8ab7c9118baf9f156e3c69 |
C:\Users\Admin\AppData\Local\Temp\nsx23EF.tmp\System.dll
| MD5 | 192639861e3dc2dc5c08bb8f8c7260d5 |
| SHA1 | 58d30e460609e22fa0098bc27d928b689ef9af78 |
| SHA256 | 23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6 |
| SHA512 | 6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc |
memory/2992-23237-0x0000000002F20000-0x0000000003CD5000-memory.dmp
memory/2992-23238-0x0000000077DE1000-0x0000000077F01000-memory.dmp
memory/2992-23239-0x0000000002F20000-0x0000000003CD5000-memory.dmp
memory/4972-23240-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4972-23241-0x0000000001660000-0x0000000002415000-memory.dmp
memory/4972-23242-0x0000000077E68000-0x0000000077E69000-memory.dmp
memory/4972-23243-0x0000000077E85000-0x0000000077E86000-memory.dmp
memory/4972-23247-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4972-23248-0x0000000001660000-0x0000000002415000-memory.dmp
memory/4972-23249-0x0000000000401000-0x0000000000404000-memory.dmp
memory/4972-23250-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4972-23251-0x0000000077DE1000-0x0000000077F01000-memory.dmp
memory/4972-23252-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4972-23253-0x0000000000401000-0x0000000000404000-memory.dmp
memory/4972-23254-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4972-23255-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4972-23257-0x0000000000401000-0x0000000000404000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2024-11-07 03:31
Reported
2024-11-07 03:33
Platform
win7-20241023-en
Max time kernel
121s
Max time network
122s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2928 -s 220
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2024-11-07 03:31
Reported
2024-11-07 03:33
Platform
win10v2004-20241007-en
Max time kernel
92s
Max time network
139s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2360 wrote to memory of 500 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2360 wrote to memory of 500 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2360 wrote to memory of 500 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 500 -ip 500
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 500 -s 612
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.42.69.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 75.117.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |