Analysis Overview
SHA256
e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa
Threat Level: Known bad
The file e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe was found to be: Known bad.
Malicious Activity Summary
Guloader family
Guloader,Cloudeye
Loads dropped DLL
Legitimate hosting services abused for malware hosting/C2
Suspicious use of SetThreadContext
Suspicious use of NtSetInformationThreadHideFromDebugger
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-01-11 05:42
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-01-11 05:42
Reported
2025-01-11 05:45
Platform
win7-20240903-en
Max time kernel
122s
Max time network
122s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.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\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.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\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2616 wrote to memory of 1944 | N/A | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2616 wrote to memory of 1944 | N/A | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2616 wrote to memory of 1944 | N/A | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2616 wrote to memory of 1944 | N/A | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | C:\Windows\SysWOW64\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe
"C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2616 -s 28
Network
Files
\Users\Admin\AppData\Local\Temp\nstDE6E.tmp\System.dll
| MD5 | 192639861e3dc2dc5c08bb8f8c7260d5 |
| SHA1 | 58d30e460609e22fa0098bc27d928b689ef9af78 |
| SHA256 | 23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6 |
| SHA512 | 6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc |
memory/2616-13-0x00000000039E0000-0x0000000005AF7000-memory.dmp
memory/2616-14-0x00000000039E0000-0x0000000005AF7000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-01-11 05:42
Reported
2025-01-11 05:45
Platform
win10v2004-20241007-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
Guloader family
Guloader,Cloudeye
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | drive.google.com | N/A | N/A |
| N/A | drive.google.com | N/A | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4956 set thread context of 3472 | N/A | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe |
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\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe
"C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe"
C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe
"C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe"
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 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | drive.google.com | udp |
| GB | 142.250.179.238:443 | drive.google.com | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| GB | 142.250.200.35:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | o.pki.goog | udp |
| GB | 142.250.200.35:80 | o.pki.goog | tcp |
| US | 8.8.8.8:53 | 35.200.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 238.179.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | drive.usercontent.google.com | udp |
| GB | 216.58.212.193:443 | drive.usercontent.google.com | tcp |
| US | 8.8.8.8:53 | 193.212.58.216.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 197.87.175.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.238.56.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 60.153.16.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nsc8B59.tmp\System.dll
| MD5 | 192639861e3dc2dc5c08bb8f8c7260d5 |
| SHA1 | 58d30e460609e22fa0098bc27d928b689ef9af78 |
| SHA256 | 23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6 |
| SHA512 | 6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc |
memory/4956-11-0x0000000004270000-0x0000000006387000-memory.dmp
memory/4956-12-0x0000000077311000-0x0000000077431000-memory.dmp
memory/4956-13-0x0000000073F65000-0x0000000073F66000-memory.dmp
memory/4956-14-0x0000000004270000-0x0000000006387000-memory.dmp
memory/3472-15-0x0000000001700000-0x0000000003817000-memory.dmp
memory/3472-28-0x00000000004A0000-0x00000000016F4000-memory.dmp
memory/3472-29-0x0000000001700000-0x0000000003817000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2025-01-11 05:42
Reported
2025-01-11 05:45
Platform
win7-20240903-en
Max time kernel
118s
Max time network
120s
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 2916 -s 220
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2025-01-11 05:42
Reported
2025-01-11 05:45
Platform
win10v2004-20241007-en
Max time kernel
149s
Max time network
150s
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 2456 wrote to memory of 1996 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2456 wrote to memory of 1996 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2456 wrote to memory of 1996 | 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 424 -p 1996 -ip 1996
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1996 -s 612
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 60.153.16.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 197.87.175.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 85.49.80.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.153.16.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 90.16.208.104.in-addr.arpa | udp |