Analysis Overview
SHA256
7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9
Threat Level: Known bad
The file 7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.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 NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Suspicious use of NtCreateThreadExHideFromDebugger
Drops file in System32 directory
Enumerates physical storage devices
Unsigned PE
System Location Discovery: System Language Discovery
Program crash
Suspicious use of WriteProcessMemory
outlook_win_path
Suspicious behavior: MapViewOfSection
Suspicious behavior: EnumeratesProcesses
outlook_office_path
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-17 03:29
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
2024-12-17 03:29
Reported
2024-12-17 03:31
Platform
win7-20240903-en
Max time kernel
117s
Max time network
118s
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\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.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\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious use of NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1984 set thread context of 2704 | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.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\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe
"C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe"
C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe
"C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.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 |
| GB | 2.18.190.73:80 | crl.microsoft.com | tcp |
| US | 8.8.8.8:53 | www.microsoft.com | udp |
| GB | 184.25.193.234:80 | www.microsoft.com | tcp |
Files
\Users\Admin\AppData\Local\Temp\nso868F.tmp\System.dll
| MD5 | ee260c45e97b62a5e42f17460d406068 |
| SHA1 | df35f6300a03c4d3d3bd69752574426296b78695 |
| SHA256 | e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27 |
| SHA512 | a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3 |
memory/1984-16-0x0000000002F10000-0x0000000006083000-memory.dmp
memory/1984-17-0x0000000077BD1000-0x0000000077CD2000-memory.dmp
memory/1984-18-0x0000000077BD0000-0x0000000077D79000-memory.dmp
memory/1984-19-0x0000000002F10000-0x0000000006083000-memory.dmp
memory/1984-20-0x0000000002F10000-0x0000000006083000-memory.dmp
memory/2704-21-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2704-41-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2704-42-0x0000000000460000-0x000000000047E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-12-17 03:29
Reported
2024-12-17 03:31
Platform
win10v2004-20241007-en
Max time kernel
140s
Max time network
149s
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\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.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-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.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\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious use of NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4728 set thread context of 1376 | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.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\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Suspicious use of WriteProcessMemory
outlook_office_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
outlook_win_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe
"C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe"
C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.exe
"C:\Users\Admin\AppData\Local\Temp\7fccb9545a51bb6d40e9c78bf9bc51dc2d2a78a27b81bf1c077eaf405cbba6e9.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 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 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 | 238.75.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.179.250.142.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 |
| DE | 193.122.6.168:80 | checkip.dyndns.org | tcp |
| US | 8.8.8.8:53 | reallyfreegeoip.org | udp |
| US | 172.67.177.134:443 | reallyfreegeoip.org | tcp |
| US | 8.8.8.8:53 | 134.177.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 168.6.122.193.in-addr.arpa | udp |
| US | 8.8.8.8:53 | api.telegram.org | 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 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 20.49.80.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 182.129.81.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nsu9ED1.tmp\System.dll
| MD5 | ee260c45e97b62a5e42f17460d406068 |
| SHA1 | df35f6300a03c4d3d3bd69752574426296b78695 |
| SHA256 | e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27 |
| SHA512 | a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3 |
memory/4728-14-0x0000000002A60000-0x0000000005BD3000-memory.dmp
memory/4728-15-0x00000000776F1000-0x0000000077811000-memory.dmp
memory/4728-17-0x0000000010004000-0x0000000010005000-memory.dmp
memory/4728-16-0x0000000002A60000-0x0000000005BD3000-memory.dmp
memory/4728-18-0x0000000002A60000-0x0000000005BD3000-memory.dmp
memory/1376-31-0x0000000000460000-0x00000000016B4000-memory.dmp
memory/1376-32-0x0000000000460000-0x00000000016B4000-memory.dmp
memory/1376-33-0x0000000000460000-0x000000000047E000-memory.dmp
memory/1376-34-0x0000000037450000-0x00000000379F4000-memory.dmp
memory/1376-35-0x0000000037270000-0x000000003730C000-memory.dmp
memory/1376-36-0x0000000037A80000-0x0000000037B12000-memory.dmp
memory/1376-37-0x0000000037E70000-0x0000000037EC0000-memory.dmp
memory/1376-38-0x0000000037FE0000-0x00000000381A2000-memory.dmp
memory/1376-39-0x0000000038260000-0x000000003826A000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2024-12-17 03:29
Reported
2024-12-17 03:31
Platform
win7-20241023-en
Max time kernel
119s
Max time network
119s
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 2344 -s 224
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2024-12-17 03:29
Reported
2024-12-17 03:31
Platform
win10v2004-20241007-en
Max time kernel
95s
Max time network
149s
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 1048 wrote to memory of 4812 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1048 wrote to memory of 4812 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1048 wrote to memory of 4812 | 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 420 -p 4812 -ip 4812
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4812 -s 612
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 13.86.106.20.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 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 107.12.20.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |