Analysis Overview
SHA256
2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3
Threat Level: Known bad
The file 2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.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 web browsers
Reads user/profile data of local email clients
Accesses Microsoft Outlook profiles
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of SetThreadContext
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Program crash
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
outlook_office_path
Suspicious use of AdjustPrivilegeToken
outlook_win_path
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-11 02:18
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral3
Detonation Overview
Submitted
2024-12-11 02:18
Reported
2024-12-11 02:21
Platform
win7-20240903-en
Max time kernel
119s
Max time network
120s
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 2052 -s 220
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2024-12-11 02:18
Reported
2024-12-11 02:20
Platform
win10v2004-20241007-en
Max time kernel
95s
Max time network
96s
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 980 wrote to memory of 3108 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 980 wrote to memory of 3108 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 980 wrote to memory of 3108 | 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 408 -p 3108 -ip 3108
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3108 -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 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 85.49.80.91.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 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 92.12.20.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
Files
Analysis: behavioral1
Detonation Overview
Submitted
2024-12-11 02:18
Reported
2024-12-11 02:20
Platform
win7-20240903-en
Max time kernel
13s
Max time network
124s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.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\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe
"C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe"
Network
Files
\Users\Admin\AppData\Local\Temp\nsjEAAF.tmp\System.dll
| MD5 | 0d7ad4f45dc6f5aa87f606d0331c6901 |
| SHA1 | 48df0911f0484cbe2a8cdd5362140b63c41ee457 |
| SHA256 | 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca |
| SHA512 | c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9 |
memory/3052-15-0x00000000037D0000-0x000000000630A000-memory.dmp
memory/3052-20-0x00000000037D0000-0x000000000630A000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-12-11 02:18
Reported
2024-12-11 02:21
Platform
win10v2004-20241007-en
Max time kernel
150s
Max time network
151s
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\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.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\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.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\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | N/A |
| 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\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.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 |
Suspicious use of NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1876 set thread context of 1268 | N/A | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.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\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.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\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.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\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe
"C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe"
C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe
"C:\Users\Admin\AppData\Local\Temp\2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.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 | 142.250.200.35:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | 35.200.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 238.179.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | o.pki.goog | udp |
| GB | 142.250.200.35:80 | o.pki.goog | tcp |
| US | 8.8.8.8:53 | drive.usercontent.google.com | udp |
| GB | 216.58.212.225:443 | drive.usercontent.google.com | tcp |
| US | 8.8.8.8:53 | 225.212.58.216.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 | reallyfreegeoip.org | udp |
| US | 188.114.96.2:443 | reallyfreegeoip.org | tcp |
| US | 8.8.8.8:53 | 0.130.122.193.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.96.114.188.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 | 228.249.119.40.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 | 83.210.23.2.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\nsj900D.tmp\System.dll
| MD5 | 0d7ad4f45dc6f5aa87f606d0331c6901 |
| SHA1 | 48df0911f0484cbe2a8cdd5362140b63c41ee457 |
| SHA256 | 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca |
| SHA512 | c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9 |
memory/1876-13-0x00000000032C0000-0x0000000005DFA000-memory.dmp
memory/1876-14-0x0000000077801000-0x0000000077921000-memory.dmp
memory/1876-15-0x00000000032C0000-0x0000000005DFA000-memory.dmp
memory/1268-16-0x00000000016E0000-0x000000000421A000-memory.dmp
memory/1268-29-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/1268-30-0x0000000000480000-0x000000000049E000-memory.dmp
memory/1268-31-0x0000000036F60000-0x0000000037504000-memory.dmp
memory/1268-32-0x0000000037520000-0x00000000375BC000-memory.dmp
memory/1268-34-0x00000000016E0000-0x000000000421A000-memory.dmp
memory/1268-35-0x0000000037A10000-0x0000000037AA2000-memory.dmp
memory/1268-36-0x0000000037AB0000-0x0000000037B00000-memory.dmp
memory/1268-37-0x0000000037C30000-0x0000000037DF2000-memory.dmp
memory/1268-38-0x0000000037EC0000-0x0000000037ECA000-memory.dmp