Analysis Overview
SHA256
2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1
Threat Level: Known bad
The file 2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe was found to be: Known bad.
Malicious Activity Summary
Guloader family
Guloader,Cloudeye
Disables Task Manager via registry modification
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Looks up external IP address via web service
Accesses Microsoft Outlook profiles
Legitimate hosting services abused for malware hosting/C2
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Program crash
Unsigned PE
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
outlook_office_path
outlook_win_path
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-01-11 02:44
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
2025-01-11 02:44
Reported
2025-01-11 02:47
Platform
win7-20240903-en
Max time kernel
12s
Max time network
119s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
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\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe
"C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe"
Network
Files
\Users\Admin\AppData\Local\Temp\nst9A2F.tmp\System.dll
| MD5 | 0d7ad4f45dc6f5aa87f606d0331c6901 |
| SHA1 | 48df0911f0484cbe2a8cdd5362140b63c41ee457 |
| SHA256 | 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca |
| SHA512 | c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9 |
memory/1800-15-0x00000000036F0000-0x000000000655A000-memory.dmp
memory/1800-20-0x00000000036F0000-0x000000000655A000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-01-11 02:44
Reported
2025-01-11 02:47
Platform
win10v2004-20241007-en
Max time kernel
149s
Max time network
150s
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\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.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-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.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 |
| N/A | reallyfreegeoip.org | N/A | N/A |
| N/A | reallyfreegeoip.org | N/A | N/A |
Suspicious use of NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2672 set thread context of 3592 | N/A | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.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\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
Suspicious use of WriteProcessMemory
outlook_office_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
outlook_win_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe
"C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe"
C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe
"C:\Users\Admin\AppData\Local\Temp\2c399d3af3092bf9b9d0ed6c4b7bef3ac082cf09d9947adc9df12d11a6fea3d1.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.153.16.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.32.126.40.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 | 172.217.169.78:443 | drive.google.com | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| GB | 142.250.178.3:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | o.pki.goog | udp |
| GB | 142.250.178.3:80 | o.pki.goog | tcp |
| US | 8.8.8.8:53 | 78.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.178.250.142.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 | checkip.dyndns.org | udp |
| BR | 132.226.247.73:80 | checkip.dyndns.org | tcp |
| US | 8.8.8.8:53 | 73.247.226.132.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | reallyfreegeoip.org | udp |
| US | 104.21.32.1:443 | reallyfreegeoip.org | tcp |
| US | 8.8.8.8:53 | 1.32.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 197.87.175.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.130.81.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 45.89.16.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 195.201.50.20.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nsgAF1E.tmp\System.dll
| MD5 | 0d7ad4f45dc6f5aa87f606d0331c6901 |
| SHA1 | 48df0911f0484cbe2a8cdd5362140b63c41ee457 |
| SHA256 | 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca |
| SHA512 | c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9 |
memory/2672-13-0x00000000032A0000-0x000000000610A000-memory.dmp
memory/2672-14-0x0000000077A51000-0x0000000077B71000-memory.dmp
memory/2672-15-0x0000000074745000-0x0000000074746000-memory.dmp
memory/2672-16-0x00000000032A0000-0x000000000610A000-memory.dmp
memory/3592-17-0x00000000016E0000-0x000000000454A000-memory.dmp
memory/3592-30-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/3592-32-0x0000000000480000-0x000000000049E000-memory.dmp
memory/3592-33-0x0000000037280000-0x0000000037824000-memory.dmp
memory/3592-34-0x00000000371A0000-0x000000003723C000-memory.dmp
memory/3592-35-0x00000000016E0000-0x000000000454A000-memory.dmp
memory/3592-37-0x0000000037C80000-0x0000000037D12000-memory.dmp
memory/3592-38-0x00000000378B0000-0x0000000037900000-memory.dmp
memory/3592-39-0x0000000037E30000-0x0000000037FF2000-memory.dmp
memory/3592-40-0x0000000038030000-0x000000003803A000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2025-01-11 02:44
Reported
2025-01-11 02:47
Platform
win7-20240729-en
Max time kernel
118s
Max time network
118s
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 2720 -s 220
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2025-01-11 02:44
Reported
2025-01-11 02:47
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 4384 wrote to memory of 2300 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4384 wrote to memory of 2300 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4384 wrote to memory of 2300 | 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 460 -p 2300 -ip 2300
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2300 -s 612
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.153.16.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.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 | 24.66.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.173.189.20.in-addr.arpa | udp |