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 web browsers
Loads dropped DLL
Reads user/profile data of local email clients
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Accesses Microsoft Outlook profiles
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Unsigned PE
Program crash
outlook_office_path
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
outlook_win_path
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-01-11 03:34
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 03:34
Reported
2025-01-11 03:36
Platform
win7-20240903-en
Max time kernel
11s
Max time network
17s
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\nst42FB.tmp\System.dll
| MD5 | 0d7ad4f45dc6f5aa87f606d0331c6901 |
| SHA1 | 48df0911f0484cbe2a8cdd5362140b63c41ee457 |
| SHA256 | 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca |
| SHA512 | c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9 |
memory/2684-15-0x0000000003480000-0x00000000042F8000-memory.dmp
memory/2684-20-0x0000000003480000-0x00000000042F8000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-01-11 03:34
Reported
2025-01-11 03:36
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\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-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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 4656 set thread context of 3024 | 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-1-5-21-2878641211-696417878-3864914810-1000\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-1-5-21-2878641211-696417878-3864914810-1000\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 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.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 | 46.169.217.172.in-addr.arpa | udp |
| 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 | 193.212.58.216.in-addr.arpa | udp |
| US | 8.8.8.8:53 | checkip.dyndns.org | udp |
| US | 193.122.130.0:80 | checkip.dyndns.org | tcp |
| US | 8.8.8.8:53 | 0.130.122.193.in-addr.arpa | udp |
| US | 8.8.8.8:53 | reallyfreegeoip.org | udp |
| US | 104.21.48.1:443 | reallyfreegeoip.org | tcp |
| US | 8.8.8.8:53 | 1.48.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.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 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 182.129.81.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.129.81.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.179.89.13.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nsj9DF7.tmp\System.dll
| MD5 | 0d7ad4f45dc6f5aa87f606d0331c6901 |
| SHA1 | 48df0911f0484cbe2a8cdd5362140b63c41ee457 |
| SHA256 | 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca |
| SHA512 | c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9 |
memory/4656-13-0x00000000032D0000-0x0000000004148000-memory.dmp
memory/4656-14-0x0000000077831000-0x0000000077951000-memory.dmp
memory/4656-15-0x0000000074525000-0x0000000074526000-memory.dmp
memory/4656-16-0x00000000032D0000-0x0000000004148000-memory.dmp
memory/3024-17-0x00000000016E0000-0x0000000002558000-memory.dmp
memory/3024-18-0x00000000778B8000-0x00000000778B9000-memory.dmp
memory/3024-19-0x00000000778D5000-0x00000000778D6000-memory.dmp
memory/3024-32-0x00000000016E0000-0x0000000002558000-memory.dmp
memory/3024-34-0x0000000077831000-0x0000000077951000-memory.dmp
memory/3024-33-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/3024-35-0x0000000000480000-0x000000000049E000-memory.dmp
memory/3024-36-0x00000000351E0000-0x0000000035784000-memory.dmp
memory/3024-37-0x0000000032E60000-0x0000000032EFC000-memory.dmp
memory/3024-39-0x0000000035AD0000-0x0000000035B62000-memory.dmp
memory/3024-40-0x0000000035B70000-0x0000000035BC0000-memory.dmp
memory/3024-41-0x0000000035D00000-0x0000000035EC2000-memory.dmp
memory/3024-42-0x0000000035F80000-0x0000000035F8A000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2025-01-11 03:34
Reported
2025-01-11 03:36
Platform
win7-20240903-en
Max time kernel
121s
Max time network
122s
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 2952 -s 220
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2025-01-11 03:34
Reported
2025-01-11 03:36
Platform
win10v2004-20241007-en
Max time kernel
149s
Max time network
152s
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 5080 wrote to memory of 2040 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 5080 wrote to memory of 2040 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 5080 wrote to memory of 2040 | 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 184 -p 2040 -ip 2040
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 612
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.130.81.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 181.129.81.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.73.50.20.in-addr.arpa | udp |