Analysis Overview
SHA256
5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a
Threat Level: Known bad
The file 5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe was found to be: Known bad.
Malicious Activity Summary
Guloader family
Guloader,Cloudeye
Disables Task Manager via registry modification
Reads user/profile data of local email clients
Loads dropped DLL
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
Program crash
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_win_path
outlook_office_path
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-01-11 03:30
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral4
Detonation Overview
Submitted
2025-01-11 03:30
Reported
2025-01-11 03:33
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 4744 wrote to memory of 1152 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4744 wrote to memory of 1152 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4744 wrote to memory of 1152 | 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 440 -p 1152 -ip 1152
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 612
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 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.130.81.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.73.42.20.in-addr.arpa | udp |
Files
Analysis: behavioral1
Detonation Overview
Submitted
2025-01-11 03:30
Reported
2025-01-11 03:33
Platform
win7-20241023-en
Max time kernel
8s
Max time network
122s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.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\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe
"C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe"
Network
Files
\Users\Admin\AppData\Local\Temp\nsjAD71.tmp\System.dll
| MD5 | 0d7ad4f45dc6f5aa87f606d0331c6901 |
| SHA1 | 48df0911f0484cbe2a8cdd5362140b63c41ee457 |
| SHA256 | 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca |
| SHA512 | c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9 |
memory/2156-15-0x0000000003550000-0x00000000043C8000-memory.dmp
memory/2156-20-0x0000000003550000-0x00000000043C8000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-01-11 03:30
Reported
2025-01-11 03:33
Platform
win10v2004-20241007-en
Max time kernel
145s
Max time network
131s
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\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.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-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.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\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2432 set thread context of 4456 | N/A | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.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\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
Suspicious use of WriteProcessMemory
outlook_office_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
outlook_win_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe
"C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe"
C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe
"C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.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 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.32.126.40.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 | 172.217.169.46:443 | 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 | drive.usercontent.google.com | udp |
| GB | 216.58.212.193:443 | drive.usercontent.google.com | tcp |
| US | 8.8.8.8:53 | 46.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.178.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 193.212.58.216.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 | 104.21.112.1:443 | reallyfreegeoip.org | tcp |
| US | 8.8.8.8:53 | 168.6.122.193.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 1.112.21.104.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 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.49.80.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 60.153.16.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nsa60B0.tmp\System.dll
| MD5 | 0d7ad4f45dc6f5aa87f606d0331c6901 |
| SHA1 | 48df0911f0484cbe2a8cdd5362140b63c41ee457 |
| SHA256 | 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca |
| SHA512 | c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9 |
memory/2432-13-0x00000000032A0000-0x0000000004118000-memory.dmp
memory/2432-14-0x0000000077211000-0x0000000077331000-memory.dmp
memory/2432-15-0x0000000073F05000-0x0000000073F06000-memory.dmp
memory/2432-16-0x00000000032A0000-0x0000000004118000-memory.dmp
memory/4456-17-0x00000000016E0000-0x0000000002558000-memory.dmp
memory/4456-18-0x0000000077298000-0x0000000077299000-memory.dmp
memory/4456-19-0x00000000772B5000-0x00000000772B6000-memory.dmp
memory/4456-32-0x00000000016E0000-0x0000000002558000-memory.dmp
memory/4456-33-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/4456-34-0x0000000077211000-0x0000000077331000-memory.dmp
memory/4456-35-0x0000000000480000-0x000000000049E000-memory.dmp
memory/4456-36-0x0000000035250000-0x00000000357F4000-memory.dmp
memory/4456-37-0x0000000035800000-0x000000003589C000-memory.dmp
memory/4456-38-0x0000000035C00000-0x0000000035C92000-memory.dmp
memory/4456-39-0x0000000035CA0000-0x0000000035CF0000-memory.dmp
memory/4456-41-0x0000000035E40000-0x0000000036002000-memory.dmp
memory/4456-42-0x00000000360C0000-0x00000000360CA000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2025-01-11 03:30
Reported
2025-01-11 03:33
Platform
win7-20241010-en
Max time kernel
119s
Max time network
126s
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 2496 -s 224