Analysis Overview
SHA256
df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f
Threat Level: Known bad
The file df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe was found to be: Known bad.
Malicious Activity Summary
Guloader,Cloudeye
Guloader family
Disables Task Manager via registry modification
Reads user/profile data of web browsers
Reads user/profile data of local email clients
Loads dropped DLL
Looks up external IP address via web service
Legitimate hosting services abused for malware hosting/C2
Accesses Microsoft Outlook profiles
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of SetThreadContext
Suspicious use of NtSetInformationThreadHideFromDebugger
Enumerates physical storage devices
Unsigned PE
System Location Discovery: System Language Discovery
Program crash
Suspicious use of WriteProcessMemory
outlook_office_path
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
outlook_win_path
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-01-11 05:34
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 05:34
Reported
2025-01-11 05:36
Platform
win7-20241023-en
Max time kernel
10s
Max time network
122s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.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\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe
"C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe"
Network
Files
\Users\Admin\AppData\Local\Temp\nst6CC9.tmp\System.dll
| MD5 | 0d7ad4f45dc6f5aa87f606d0331c6901 |
| SHA1 | 48df0911f0484cbe2a8cdd5362140b63c41ee457 |
| SHA256 | 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca |
| SHA512 | c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9 |
memory/2928-15-0x00000000037C0000-0x00000000061D6000-memory.dmp
memory/2928-20-0x00000000037C0000-0x00000000061D6000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-01-11 05:34
Reported
2025-01-11 05:36
Platform
win10v2004-20241007-en
Max time kernel
147s
Max time network
145s
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\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.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\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.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\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.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\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.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\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 956 set thread context of 2996 | N/A | C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe | C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.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\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.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\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.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\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe
"C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe"
C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.exe
"C:\Users\Admin\AppData\Local\Temp\df4f955eb7e72870bf18d39f3dfe1fad5fb9093a080e65f315d215bfec94cc2f.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 | 217.106.137.52.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 | 5.114.82.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | drive.google.com | udp |
| GB | 142.250.179.238:443 | 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 |
| US | 8.8.8.8:53 | 238.179.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 35.200.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.178.250.142.in-addr.arpa | udp |
| GB | 142.250.200.35:80 | 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 | 97.17.167.52.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 | reallyfreegeoip.org | udp |
| US | 104.21.96.1:443 | reallyfreegeoip.org | tcp |
| US | 8.8.8.8:53 | 1.96.21.104.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 | 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 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.153.16.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nsvBAF5.tmp\System.dll
| MD5 | 0d7ad4f45dc6f5aa87f606d0331c6901 |
| SHA1 | 48df0911f0484cbe2a8cdd5362140b63c41ee457 |
| SHA256 | 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca |
| SHA512 | c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9 |
memory/956-13-0x00000000032A0000-0x0000000005CB6000-memory.dmp
memory/956-14-0x0000000077991000-0x0000000077AB1000-memory.dmp
memory/956-15-0x0000000074685000-0x0000000074686000-memory.dmp
memory/956-16-0x00000000032A0000-0x0000000005CB6000-memory.dmp
memory/2996-17-0x00000000016E0000-0x00000000040F6000-memory.dmp
memory/2996-30-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/2996-31-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/2996-32-0x00000000016E0000-0x00000000040F6000-memory.dmp
memory/2996-33-0x0000000000480000-0x000000000049E000-memory.dmp
memory/2996-34-0x0000000036ED0000-0x0000000037474000-memory.dmp
memory/2996-35-0x0000000037480000-0x000000003751C000-memory.dmp
memory/2996-36-0x0000000037880000-0x0000000037912000-memory.dmp
memory/2996-37-0x0000000037920000-0x0000000037970000-memory.dmp
memory/2996-38-0x0000000037A70000-0x0000000037C32000-memory.dmp
memory/2996-39-0x0000000034B10000-0x0000000034B1A000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2025-01-11 05:34
Reported
2025-01-11 05:36
Platform
win7-20240903-en
Max time kernel
121s
Max time network
123s
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 2572 -s 220
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2025-01-11 05:34
Reported
2025-01-11 05:36
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 868 wrote to memory of 380 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 868 wrote to memory of 380 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 868 wrote to memory of 380 | 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 380 -ip 380
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 380 -s 612
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 | 86.49.80.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.153.16.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 175.117.168.52.in-addr.arpa | udp |