Analysis Overview
SHA256
736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b
Threat Level: Known bad
The file 736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe was found to be: Known bad.
Malicious Activity Summary
Guloader,Cloudeye
Guloader family
Loads dropped DLL
Legitimate hosting services abused for malware hosting/C2
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Drops file in Windows directory
Drops file in Program Files directory
Program crash
System Location Discovery: System Language Discovery
Unsigned PE
Enumerates physical storage devices
NSIS installer
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-06 14:40
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
NSIS installer
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral3
Detonation Overview
Submitted
2024-11-06 14:40
Reported
2024-11-06 14:42
Platform
win7-20240903-en
Max time kernel
120s
Max time network
121s
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 2692 -s 224
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2024-11-06 14:40
Reported
2024-11-06 14:42
Platform
win10v2004-20241007-en
Max time kernel
93s
Max time network
137s
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 4752 wrote to memory of 1936 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4752 wrote to memory of 1936 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4752 wrote to memory of 1936 | 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 428 -p 1936 -ip 1936
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1936 -s 612
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.160.190.20.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 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 75.117.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
Files
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-06 14:40
Reported
2024-11-06 14:42
Platform
win7-20240903-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
Guloader family
Guloader,Cloudeye
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.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 NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2660 set thread context of 2668 | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Common Files\Reoil.mul | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
Drops file in Windows directory
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\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.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\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe
"C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe"
C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe
"C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2668 -s 68
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | drive.google.com | udp |
| GB | 142.250.187.206:443 | drive.google.com | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| GB | 172.217.16.227:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | o.pki.goog | udp |
| GB | 142.250.187.227:80 | o.pki.goog | tcp |
| US | 8.8.8.8:53 | drive.usercontent.google.com | udp |
| GB | 172.217.16.225:443 | drive.usercontent.google.com | tcp |
| US | 8.8.8.8:53 | crl.microsoft.com | udp |
| GB | 2.19.117.22:80 | crl.microsoft.com | tcp |
Files
\Users\Admin\AppData\Local\Temp\nstF3C2.tmp\System.dll
| MD5 | c9473cb90d79a374b2ba6040ca16e45c |
| SHA1 | ab95b54f12796dce57210d65f05124a6ed81234a |
| SHA256 | b80a5cba69d1853ed5979b0ca0352437bf368a5cfb86cb4528edadd410e11352 |
| SHA512 | eafe7d5894622bc21f663bca4dd594392ee0f5b29270b6b56b0187093d6a3a103545464ff6398ad32d2cf15dab79b1f133218ba9ba337ddc01330b5ada804d7b |
memory/2660-20-0x0000000003580000-0x00000000041AF000-memory.dmp
memory/2660-21-0x0000000077701000-0x0000000077802000-memory.dmp
memory/2660-22-0x0000000077700000-0x00000000778A9000-memory.dmp
memory/2660-23-0x0000000003580000-0x00000000041AF000-memory.dmp
memory/2668-25-0x0000000077700000-0x00000000778A9000-memory.dmp
memory/2668-24-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2668-47-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2668-48-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2668-49-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2668-50-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2668-51-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2668-52-0x0000000000400000-0x0000000001462000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-06 14:40
Reported
2024-11-06 14:42
Platform
win10v2004-20241007-en
Max time kernel
95s
Max time network
138s
Command Line
Signatures
Guloader family
Guloader,Cloudeye
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.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 NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 852 set thread context of 264 | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Common Files\Reoil.mul | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
Drops file in Windows directory
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\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.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\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe
"C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe"
C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe
"C:\Users\Admin\AppData\Local\Temp\736c7e43912f503e8c2a91a5f64c95ee3f1f817d20acbb306fba3eb9b83ba24b.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 264 -ip 264
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 264 -s 1484
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.159.190.20.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 | 142.250.187.206:443 | drive.google.com | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| GB | 142.250.187.227:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | o.pki.goog | udp |
| GB | 142.250.187.227:80 | o.pki.goog | tcp |
| US | 8.8.8.8:53 | drive.usercontent.google.com | udp |
| GB | 172.217.16.225:443 | drive.usercontent.google.com | tcp |
| US | 8.8.8.8:53 | 206.187.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 225.16.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.117.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nstB612.tmp\System.dll
| MD5 | c9473cb90d79a374b2ba6040ca16e45c |
| SHA1 | ab95b54f12796dce57210d65f05124a6ed81234a |
| SHA256 | b80a5cba69d1853ed5979b0ca0352437bf368a5cfb86cb4528edadd410e11352 |
| SHA512 | eafe7d5894622bc21f663bca4dd594392ee0f5b29270b6b56b0187093d6a3a103545464ff6398ad32d2cf15dab79b1f133218ba9ba337ddc01330b5ada804d7b |
memory/852-18-0x0000000003190000-0x0000000003DBF000-memory.dmp
memory/852-19-0x0000000077241000-0x0000000077361000-memory.dmp
memory/852-20-0x0000000010004000-0x0000000010005000-memory.dmp
memory/852-21-0x0000000003190000-0x0000000003DBF000-memory.dmp
memory/264-22-0x0000000000400000-0x0000000001654000-memory.dmp
memory/264-23-0x0000000001660000-0x000000000228F000-memory.dmp
memory/264-24-0x00000000772C8000-0x00000000772C9000-memory.dmp
memory/264-25-0x00000000772E5000-0x00000000772E6000-memory.dmp
memory/264-38-0x0000000001660000-0x000000000228F000-memory.dmp
memory/264-39-0x0000000000400000-0x0000000001654000-memory.dmp
memory/264-40-0x0000000000401000-0x0000000000404000-memory.dmp
memory/264-42-0x0000000077241000-0x0000000077361000-memory.dmp
memory/264-41-0x0000000000400000-0x0000000001654000-memory.dmp
memory/264-43-0x0000000000401000-0x0000000000404000-memory.dmp
memory/264-44-0x0000000000400000-0x0000000001654000-memory.dmp
memory/264-45-0x0000000000400000-0x0000000001654000-memory.dmp
memory/264-46-0x0000000000400000-0x0000000001654000-memory.dmp
memory/264-47-0x0000000000400000-0x0000000001654000-memory.dmp
memory/264-48-0x0000000000400000-0x0000000001654000-memory.dmp
memory/264-49-0x0000000001660000-0x000000000228F000-memory.dmp
memory/264-50-0x0000000000401000-0x0000000000404000-memory.dmp