Analysis Overview
SHA256
0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f
Threat Level: Known bad
The file Forreste.exe was found to be: Known bad.
Malicious Activity Summary
Guloader,Cloudeye
Guloader family
Loads dropped DLL
Legitimate hosting services abused for malware hosting/C2
Suspicious use of SetThreadContext
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in Program Files directory
Drops file in Windows directory
Unsigned PE
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Program crash
NSIS installer
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-10-29 12:00
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
NSIS installer
| 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
2024-10-29 12:00
Reported
2024-10-29 12:02
Platform
win7-20241023-en
Max time kernel
119s
Max time network
121s
Command Line
Signatures
Guloader family
Guloader,Cloudeye
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.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 |
Suspicious use of NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1784 set thread context of 2804 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Common Files\Reoil.mul | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\Fonts\Spodium39.int | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| File opened for modification | C:\Windows\Belringernes\Dermatophony.ini | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| File opened for modification | C:\Windows\resources\nringsmiddelet.ini | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| File opened for modification | C:\Windows\resources\stenhjsplanternes\fordreves.ini | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| File opened for modification | C:\Windows\Fonts\karrooers.ini | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| File opened for modification | C:\Windows\Fonts\brunsttiderne.tri | C:\Users\Admin\AppData\Local\Temp\Forreste.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\Forreste.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1784 wrote to memory of 2804 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
| PID 1784 wrote to memory of 2804 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
| PID 1784 wrote to memory of 2804 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
| PID 1784 wrote to memory of 2804 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
| PID 1784 wrote to memory of 2804 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
| PID 1784 wrote to memory of 2804 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Forreste.exe
"C:\Users\Admin\AppData\Local\Temp\Forreste.exe"
C:\Users\Admin\AppData\Local\Temp\Forreste.exe
"C:\Users\Admin\AppData\Local\Temp\Forreste.exe"
Network
| Country | Destination | Domain | Proto |
| 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 | 142.250.180.3:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | o.pki.goog | udp |
| GB | 142.250.180.3:80 | o.pki.goog | tcp |
| US | 8.8.8.8:53 | drive.usercontent.google.com | udp |
| GB | 142.250.187.193:443 | drive.usercontent.google.com | tcp |
Files
\Users\Admin\AppData\Local\Temp\nsdABCA.tmp\System.dll
| MD5 | c9473cb90d79a374b2ba6040ca16e45c |
| SHA1 | ab95b54f12796dce57210d65f05124a6ed81234a |
| SHA256 | b80a5cba69d1853ed5979b0ca0352437bf368a5cfb86cb4528edadd410e11352 |
| SHA512 | eafe7d5894622bc21f663bca4dd594392ee0f5b29270b6b56b0187093d6a3a103545464ff6398ad32d2cf15dab79b1f133218ba9ba337ddc01330b5ada804d7b |
memory/1784-20-0x0000000003600000-0x0000000006388000-memory.dmp
memory/1784-21-0x0000000003600000-0x0000000006388000-memory.dmp
memory/1784-23-0x0000000077481000-0x0000000077582000-memory.dmp
memory/1784-22-0x0000000077670000-0x0000000077746000-memory.dmp
memory/1784-24-0x0000000077480000-0x0000000077629000-memory.dmp
memory/1784-25-0x0000000003600000-0x0000000006388000-memory.dmp
memory/2804-26-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2804-27-0x0000000077480000-0x0000000077629000-memory.dmp
memory/2804-48-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2804-49-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2804-51-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2804-50-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2804-52-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2804-59-0x0000000000400000-0x0000000001462000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-10-29 12:00
Reported
2024-10-29 12:02
Platform
win10v2004-20241007-en
Max time kernel
150s
Max time network
150s
Command Line
Signatures
Guloader family
Guloader,Cloudeye
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.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 |
Suspicious use of NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3748 set thread context of 8 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Common Files\Reoil.mul | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\Fonts\Spodium39.int | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| File opened for modification | C:\Windows\Belringernes\Dermatophony.ini | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| File opened for modification | C:\Windows\resources\nringsmiddelet.ini | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| File opened for modification | C:\Windows\resources\stenhjsplanternes\fordreves.ini | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| File opened for modification | C:\Windows\Fonts\karrooers.ini | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| File opened for modification | C:\Windows\Fonts\brunsttiderne.tri | C:\Users\Admin\AppData\Local\Temp\Forreste.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\Forreste.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3748 wrote to memory of 8 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
| PID 3748 wrote to memory of 8 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
| PID 3748 wrote to memory of 8 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
| PID 3748 wrote to memory of 8 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
| PID 3748 wrote to memory of 8 | N/A | C:\Users\Admin\AppData\Local\Temp\Forreste.exe | C:\Users\Admin\AppData\Local\Temp\Forreste.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Forreste.exe
"C:\Users\Admin\AppData\Local\Temp\Forreste.exe"
C:\Users\Admin\AppData\Local\Temp\Forreste.exe
"C:\Users\Admin\AppData\Local\Temp\Forreste.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
| 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 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.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 | 142.250.180.3:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | o.pki.goog | udp |
| GB | 142.250.180.3:80 | o.pki.goog | tcp |
| US | 8.8.8.8:53 | 238.179.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | drive.usercontent.google.com | udp |
| GB | 142.250.187.193:443 | drive.usercontent.google.com | tcp |
| US | 8.8.8.8:53 | 193.187.250.142.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 | 73.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nsj76F6.tmp\System.dll
| MD5 | c9473cb90d79a374b2ba6040ca16e45c |
| SHA1 | ab95b54f12796dce57210d65f05124a6ed81234a |
| SHA256 | b80a5cba69d1853ed5979b0ca0352437bf368a5cfb86cb4528edadd410e11352 |
| SHA512 | eafe7d5894622bc21f663bca4dd594392ee0f5b29270b6b56b0187093d6a3a103545464ff6398ad32d2cf15dab79b1f133218ba9ba337ddc01330b5ada804d7b |
memory/3748-18-0x0000000003190000-0x0000000005F18000-memory.dmp
memory/3748-19-0x0000000003190000-0x0000000005F18000-memory.dmp
memory/3748-20-0x0000000077091000-0x00000000771B1000-memory.dmp
memory/3748-21-0x0000000010004000-0x0000000010005000-memory.dmp
memory/3748-22-0x0000000003190000-0x0000000005F18000-memory.dmp
memory/8-23-0x0000000000400000-0x0000000001654000-memory.dmp
memory/8-24-0x0000000001660000-0x00000000043E8000-memory.dmp
memory/8-37-0x0000000000400000-0x0000000001654000-memory.dmp
memory/8-38-0x0000000000400000-0x0000000001654000-memory.dmp
memory/8-39-0x0000000001660000-0x00000000043E8000-memory.dmp
memory/8-40-0x0000000000400000-0x0000000001654000-memory.dmp
memory/8-41-0x0000000000400000-0x0000000001654000-memory.dmp
memory/8-44-0x0000000000400000-0x0000000001654000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2024-10-29 12:00
Reported
2024-10-29 12:02
Platform
win7-20241010-en
Max time kernel
13s
Max time network
19s
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 2384 -s 228
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2024-10-29 12:00
Reported
2024-10-29 12:02
Platform
win10v2004-20241007-en
Max time kernel
133s
Max time network
137s
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 3656 wrote to memory of 4264 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3656 wrote to memory of 4264 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3656 wrote to memory of 4264 | 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 4264 -ip 4264
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4264 -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 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 77.190.18.2.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 | 197.87.175.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 138.201.86.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |