Analysis Overview
SHA256
fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963
Threat Level: Known bad
The file fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe was found to be: Known bad.
Malicious Activity Summary
Guloader,Cloudeye
Guloader family
Disables Task Manager via registry modification
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Legitimate hosting services abused for malware hosting/C2
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of SetThreadContext
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in System32 directory
Enumerates physical storage devices
Unsigned PE
Program crash
System Location Discovery: System Language Discovery
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
outlook_win_path
outlook_office_path
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-19 04:33
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-12-19 04:33
Reported
2024-12-19 04:35
Platform
win7-20240708-en
Max time kernel
121s
Max time network
122s
Command Line
Signatures
Guloader family
Guloader,Cloudeye
Disables Task Manager via registry modification
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Reads user/profile data of web browsers
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 |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | checkip.dyndns.org | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\hjemmecomputeren.Pot | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious use of NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2160 set thread context of 2736 | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.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\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe
"C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe"
C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe
"C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | drive.google.com | udp |
| FR | 142.250.75.238:443 | drive.google.com | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| FR | 142.250.179.67:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | o.pki.goog | udp |
| FR | 142.250.179.67:80 | o.pki.goog | tcp |
| US | 8.8.8.8:53 | drive.usercontent.google.com | udp |
| FR | 142.250.74.225:443 | drive.usercontent.google.com | tcp |
| US | 8.8.8.8:53 | checkip.dyndns.org | udp |
| DE | 193.122.6.168:80 | checkip.dyndns.org | tcp |
| US | 8.8.8.8:53 | reallyfreegeoip.org | udp |
| US | 104.21.67.152:443 | reallyfreegeoip.org | tcp |
| US | 8.8.8.8:53 | crl.microsoft.com | udp |
| FR | 2.16.149.13:80 | crl.microsoft.com | tcp |
| US | 8.8.8.8:53 | www.microsoft.com | udp |
| GB | 95.100.245.144:80 | www.microsoft.com | tcp |
Files
\Users\Admin\AppData\Local\Temp\nso62E9.tmp\System.dll
| MD5 | ee260c45e97b62a5e42f17460d406068 |
| SHA1 | df35f6300a03c4d3d3bd69752574426296b78695 |
| SHA256 | e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27 |
| SHA512 | a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3 |
memory/2160-16-0x0000000002D20000-0x0000000003F18000-memory.dmp
memory/2160-17-0x0000000076F91000-0x0000000077092000-memory.dmp
memory/2160-18-0x0000000076F90000-0x0000000077139000-memory.dmp
memory/2160-19-0x0000000002D20000-0x0000000003F18000-memory.dmp
memory/2736-20-0x0000000076F90000-0x0000000077139000-memory.dmp
memory/2736-42-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2736-43-0x0000000000460000-0x000000000047E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-12-19 04:33
Reported
2024-12-19 04:35
Platform
win10v2004-20241007-en
Max time kernel
148s
Max time network
151s
Command Line
Signatures
Guloader family
Guloader,Cloudeye
Disables Task Manager via registry modification
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Accesses Microsoft Outlook profiles
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.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 |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | checkip.dyndns.org | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\hjemmecomputeren.Pot | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious use of NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4440 set thread context of 4888 | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.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\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Suspicious use of WriteProcessMemory
outlook_office_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
outlook_win_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe
"C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe"
C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.exe
"C:\Users\Admin\AppData\Local\Temp\fc94d179b05d50bcaa14523b241ee1652fde502bb7a3a27727e0892d39452963.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 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 182.129.81.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | drive.google.com | udp |
| FR | 142.250.75.238:443 | drive.google.com | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| FR | 142.250.179.67:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | o.pki.goog | udp |
| US | 8.8.8.8:53 | 67.179.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 238.75.250.142.in-addr.arpa | udp |
| FR | 142.250.179.67:80 | o.pki.goog | tcp |
| US | 8.8.8.8:53 | drive.usercontent.google.com | udp |
| FR | 142.250.74.225:443 | drive.usercontent.google.com | tcp |
| US | 8.8.8.8:53 | 225.74.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | checkip.dyndns.org | udp |
| JP | 132.226.8.169:80 | checkip.dyndns.org | tcp |
| US | 8.8.8.8:53 | 169.8.226.132.in-addr.arpa | udp |
| US | 8.8.8.8:53 | reallyfreegeoip.org | udp |
| US | 104.21.67.152:443 | reallyfreegeoip.org | tcp |
| US | 8.8.8.8:53 | 152.67.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | api.telegram.org | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.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 | 212.20.149.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.49.80.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.49.80.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nsz7928.tmp\System.dll
| MD5 | ee260c45e97b62a5e42f17460d406068 |
| SHA1 | df35f6300a03c4d3d3bd69752574426296b78695 |
| SHA256 | e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27 |
| SHA512 | a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3 |
memory/4440-14-0x0000000002A60000-0x0000000003C58000-memory.dmp
memory/4440-15-0x0000000077B01000-0x0000000077C21000-memory.dmp
memory/4440-16-0x0000000010004000-0x0000000010005000-memory.dmp
memory/4440-17-0x0000000002A60000-0x0000000003C58000-memory.dmp
memory/4888-18-0x00000000016C0000-0x00000000028B8000-memory.dmp
memory/4888-19-0x0000000077B88000-0x0000000077B89000-memory.dmp
memory/4888-20-0x0000000077BA5000-0x0000000077BA6000-memory.dmp
memory/4888-30-0x00000000016C0000-0x00000000028B8000-memory.dmp
memory/4888-34-0x0000000000460000-0x00000000016B4000-memory.dmp
memory/4888-35-0x0000000000460000-0x000000000047E000-memory.dmp
memory/4888-36-0x0000000035580000-0x0000000035B24000-memory.dmp
memory/4888-37-0x0000000035B30000-0x0000000035BCC000-memory.dmp
memory/4888-39-0x0000000035FD0000-0x0000000036062000-memory.dmp
memory/4888-40-0x0000000035D50000-0x0000000035DA0000-memory.dmp
memory/4888-41-0x0000000077B01000-0x0000000077C21000-memory.dmp
memory/4888-42-0x00000000361A0000-0x0000000036362000-memory.dmp
memory/4888-43-0x0000000036420000-0x000000003642A000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2024-12-19 04:33
Reported
2024-12-19 04:36
Platform
win7-20241010-en
Max time kernel
119s
Max time network
124s
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 1668 -s 228
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2024-12-19 04:33
Reported
2024-12-19 04:35
Platform
win10v2004-20241007-en
Max time kernel
96s
Max time network
145s
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 1700 wrote to memory of 208 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1700 wrote to memory of 208 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1700 wrote to memory of 208 | 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 208 -ip 208
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 208 -s 612
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 212.20.149.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |