Analysis Overview
SHA256
cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a
Threat Level: Known bad
The file cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe was found to be: Known bad.
Malicious Activity Summary
Guloader,Cloudeye
Loads dropped DLL
Legitimate hosting services abused for malware hosting/C2
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of SetThreadContext
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in Windows directory
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Program crash
NSIS installer
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-22 14:37
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
2024-05-22 14:37
Reported
2024-05-22 14:40
Platform
win7-20240221-en
Max time kernel
120s
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 |
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 1648 -s 224
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2024-05-22 14:37
Reported
2024-05-22 14:40
Platform
win10v2004-20240426-en
Max time kernel
134s
Max time network
105s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1932 wrote to memory of 3496 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1932 wrote to memory of 3496 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1932 wrote to memory of 3496 | 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 404 -p 3496 -ip 3496
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 612
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| NL | 23.62.61.106:443 | www.bing.com | 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 | 75.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 106.61.62.23.in-addr.arpa | udp |
| NL | 23.62.61.106:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| 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 | 45.19.74.20.in-addr.arpa | udp |
Files
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-22 14:37
Reported
2024-05-22 14:40
Platform
win7-20240221-en
Max time kernel
144s
Max time network
143s
Command Line
Signatures
Guloader,Cloudeye
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.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\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1796 set thread context of 2576 | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\konvoluterer\Forsikringsinspektrer.ini | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\mycelian\sempitern.ini | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe
"C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe"
C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe
"C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | drive.google.com | udp |
| GB | 142.250.187.238:443 | drive.google.com | tcp |
| US | 8.8.8.8:53 | drive.usercontent.google.com | udp |
| GB | 142.250.179.225:443 | drive.usercontent.google.com | tcp |
Files
\Users\Admin\AppData\Local\Temp\nsi1650.tmp\System.dll
| MD5 | b8992e497d57001ddf100f9c397fcef5 |
| SHA1 | e26ddf101a2ec5027975d2909306457c6f61cfbd |
| SHA256 | 98bcd1dd88642f4dd36a300c76ebb1ddfbbbc5bfc7e3b6d7435dc6d6e030c13b |
| SHA512 | 8823b1904dccfaf031068102cb1def7958a057f49ff369f0e061f1b4db2090021aa620bb8442a2a6ac9355bb74ee54371dc2599c20dc723755a46ede81533a3c |
memory/1796-33-0x00000000039A0000-0x00000000059C1000-memory.dmp
memory/1796-34-0x0000000076EA1000-0x0000000076FA2000-memory.dmp
memory/1796-35-0x0000000076EA0000-0x0000000077049000-memory.dmp
memory/2576-38-0x0000000076EA0000-0x0000000077049000-memory.dmp
memory/1796-37-0x00000000039A0000-0x00000000059C1000-memory.dmp
memory/2576-36-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2576-60-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2576-62-0x0000000000400000-0x0000000001462000-memory.dmp
memory/1796-63-0x00000000039A0000-0x00000000059C1000-memory.dmp
memory/2576-64-0x0000000000400000-0x0000000001462000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-22 14:37
Reported
2024-05-22 14:40
Platform
win10v2004-20240426-en
Max time kernel
143s
Max time network
146s
Command Line
Signatures
Guloader,Cloudeye
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.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\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1136 set thread context of 2028 | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\konvoluterer\Forsikringsinspektrer.ini | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\mycelian\sempitern.ini | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe
"C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe"
C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe
"C:\Users\Admin\AppData\Local\Temp\cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a.exe"
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 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | drive.google.com | udp |
| GB | 142.250.187.238:443 | drive.google.com | tcp |
| US | 8.8.8.8:53 | 238.187.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | drive.usercontent.google.com | udp |
| GB | 142.250.179.225:443 | drive.usercontent.google.com | tcp |
| US | 8.8.8.8:53 | 225.179.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| 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 |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| NL | 23.62.61.160:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 160.61.62.23.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nsh329B.tmp\System.dll
| MD5 | b8992e497d57001ddf100f9c397fcef5 |
| SHA1 | e26ddf101a2ec5027975d2909306457c6f61cfbd |
| SHA256 | 98bcd1dd88642f4dd36a300c76ebb1ddfbbbc5bfc7e3b6d7435dc6d6e030c13b |
| SHA512 | 8823b1904dccfaf031068102cb1def7958a057f49ff369f0e061f1b4db2090021aa620bb8442a2a6ac9355bb74ee54371dc2599c20dc723755a46ede81533a3c |
memory/1136-32-0x0000000004B20000-0x0000000006B41000-memory.dmp
memory/1136-33-0x0000000077671000-0x0000000077791000-memory.dmp
memory/1136-34-0x0000000010004000-0x0000000010005000-memory.dmp
memory/2028-35-0x0000000000400000-0x0000000001654000-memory.dmp
memory/2028-36-0x0000000001660000-0x0000000003681000-memory.dmp
memory/1136-37-0x0000000004B20000-0x0000000006B41000-memory.dmp
memory/2028-50-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1136-51-0x0000000004B20000-0x0000000006B41000-memory.dmp
memory/2028-52-0x0000000000400000-0x0000000001654000-memory.dmp
memory/2028-53-0x0000000001660000-0x0000000003681000-memory.dmp