Analysis Overview
SHA256
cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608
Threat Level: Known bad
The file cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.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
Loads dropped DLL
Reads user/profile data of local email clients
Legitimate hosting services abused for malware hosting/C2
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Program crash
Enumerates physical storage devices
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious behavior: EnumeratesProcesses
outlook_win_path
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-10 03:41
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
2024-12-10 03:41
Reported
2024-12-10 03:43
Platform
win7-20241023-en
Max time kernel
122s
Max time network
123s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.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\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1640 set thread context of 2380 | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.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\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe
"C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe"
C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe
"C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe"
Network
| Country | Destination | Domain | Proto |
| 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 | drive.usercontent.google.com | udp |
| GB | 216.58.212.193:443 | drive.usercontent.google.com | tcp |
| 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 | www.microsoft.com | udp |
| GB | 95.100.245.144:80 | www.microsoft.com | tcp |
Files
\Users\Admin\AppData\Local\Temp\nsyC718.tmp\System.dll
| MD5 | fc90dfb694d0e17b013d6f818bce41b0 |
| SHA1 | 3243969886d640af3bfa442728b9f0dff9d5f5b0 |
| SHA256 | 7fe77ca13121a113c59630a3dba0c8aaa6372e8082393274da8f8608c4ce4528 |
| SHA512 | 324f13aa7a33c6408e2a57c3484d1691ecee7c3c1366de2bb8978c8dc66b18425d8cab5a32d1702c13c43703e36148a022263de7166afdce141da2b01169f1c6 |
memory/1640-15-0x0000000003360000-0x000000000662D000-memory.dmp
memory/1640-17-0x0000000077200000-0x00000000773A9000-memory.dmp
memory/1640-16-0x0000000077201000-0x0000000077302000-memory.dmp
memory/1640-18-0x0000000003360000-0x000000000662D000-memory.dmp
memory/2380-38-0x00000000004B0000-0x0000000001512000-memory.dmp
memory/2380-39-0x00000000004B0000-0x0000000001512000-memory.dmp
memory/2380-40-0x00000000004B0000-0x00000000004CE000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-12-10 03:41
Reported
2024-12-10 03:43
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\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.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-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.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\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3484 set thread context of 1748 | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.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\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
Suspicious use of WriteProcessMemory
outlook_office_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
outlook_win_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe
"C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe"
C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.exe
"C:\Users\Admin\AppData\Local\Temp\cb076958b9db298f34a9eeaafc4796f6d902b19b1696b76179db10612d371608.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 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.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 | 196.249.167.52.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 | 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 |
| US | 158.101.44.242:80 | checkip.dyndns.org | tcp |
| US | 8.8.8.8:53 | reallyfreegeoip.org | udp |
| US | 172.67.177.134:443 | reallyfreegeoip.org | tcp |
| US | 8.8.8.8:53 | 242.44.101.158.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.177.67.172.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 | 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 | 134.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 5.173.189.20.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nst9B77.tmp\System.dll
| MD5 | fc90dfb694d0e17b013d6f818bce41b0 |
| SHA1 | 3243969886d640af3bfa442728b9f0dff9d5f5b0 |
| SHA256 | 7fe77ca13121a113c59630a3dba0c8aaa6372e8082393274da8f8608c4ce4528 |
| SHA512 | 324f13aa7a33c6408e2a57c3484d1691ecee7c3c1366de2bb8978c8dc66b18425d8cab5a32d1702c13c43703e36148a022263de7166afdce141da2b01169f1c6 |
memory/3484-15-0x00000000032C0000-0x000000000658D000-memory.dmp
memory/3484-16-0x0000000077811000-0x0000000077931000-memory.dmp
memory/3484-17-0x0000000010004000-0x0000000010005000-memory.dmp
memory/3484-18-0x00000000032C0000-0x000000000658D000-memory.dmp
memory/1748-31-0x00000000004B0000-0x0000000001704000-memory.dmp
memory/1748-32-0x00000000004B0000-0x0000000001704000-memory.dmp
memory/1748-33-0x00000000004B0000-0x00000000004CE000-memory.dmp
memory/1748-34-0x00000000376C0000-0x0000000037C64000-memory.dmp
memory/1748-35-0x00000000374D0000-0x000000003756C000-memory.dmp
memory/1748-36-0x0000000037FB0000-0x0000000038042000-memory.dmp
memory/1748-37-0x0000000037650000-0x00000000376A0000-memory.dmp
memory/1748-38-0x0000000038170000-0x0000000038332000-memory.dmp
memory/1748-39-0x0000000038400000-0x000000003840A000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2024-12-10 03:41
Reported
2024-12-10 03:43
Platform
win7-20240708-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 2332 -s 224
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2024-12-10 03:41
Reported
2024-12-10 03:43
Platform
win10v2004-20241007-en
Max time kernel
148s
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 444 wrote to memory of 3996 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 444 wrote to memory of 3996 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 444 wrote to memory of 3996 | 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 3996 -ip 3996
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -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 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.49.80.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.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 | 140.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |