Analysis Overview
SHA256
5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0
Threat Level: Known bad
The file 5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe was found to be: Known bad.
Malicious Activity Summary
Guloader,Cloudeye
Guloader family
Loads dropped DLL
Drops file in Windows directory
Drops file in Program Files directory
Enumerates physical storage devices
Program crash
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-07 02:30
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-07 02:30
Reported
2024-11-07 02:32
Platform
win7-20241023-en
Max time kernel
9s
Max time network
123s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Common Files\customization.rom | C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\resources\primy.ini | C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.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\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe
"C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe"
Network
Files
C:\Windows\Resources\primy.ini
| MD5 | 76d9175a3db7407eb0bfc3c07ddcd9d2 |
| SHA1 | 72071127e9a44935cb02650ed715ccaf6a8f8418 |
| SHA256 | 1f7119996dd17af05bf05e497104715bbbc3909676afa4329fbd59502be1a1a5 |
| SHA512 | 5032dab71e70a4bd1dad2f5cf9380e0097be7993bc46886fed6e4bdd8781f2b10d31338d90d0dc5804665bda2cbfe93f1172250e1a8ab7c9118baf9f156e3c69 |
\Users\Admin\AppData\Local\Temp\nsoBE51.tmp\System.dll
| MD5 | 192639861e3dc2dc5c08bb8f8c7260d5 |
| SHA1 | 58d30e460609e22fa0098bc27d928b689ef9af78 |
| SHA256 | 23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6 |
| SHA512 | 6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc |
memory/2580-23239-0x0000000003030000-0x0000000003A99000-memory.dmp
memory/2580-23242-0x0000000003030000-0x0000000003A99000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-07 02:30
Reported
2024-11-07 02:32
Platform
win10v2004-20241007-en
Max time kernel
12s
Max time network
158s
Command Line
Signatures
Guloader family
Guloader,Cloudeye
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Common Files\customization.rom | C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\resources\primy.ini | C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.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\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe
"C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe"
C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe
"C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.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 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.117.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | kmsaksesuar.com | udp |
| US | 44.28.239.165:443 | kmsaksesuar.com | tcp |
| US | 44.28.239.165:443 | kmsaksesuar.com | tcp |
| US | 8.8.8.8:53 | 74.208.201.84.in-addr.arpa | udp |
| US | 44.28.239.165:443 | kmsaksesuar.com | tcp |
| US | 44.28.239.165:443 | kmsaksesuar.com | tcp |
| US | 8.8.8.8:53 | 70.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 44.28.239.165:443 | kmsaksesuar.com | tcp |
| US | 44.28.239.165:443 | kmsaksesuar.com | tcp |
| US | 44.28.239.165:443 | kmsaksesuar.com | tcp |
| US | 44.28.239.165:443 | kmsaksesuar.com | tcp |
| US | 8.8.8.8:53 | 16.173.189.20.in-addr.arpa | udp |
Files
C:\Windows\Resources\primy.ini
| MD5 | 76d9175a3db7407eb0bfc3c07ddcd9d2 |
| SHA1 | 72071127e9a44935cb02650ed715ccaf6a8f8418 |
| SHA256 | 1f7119996dd17af05bf05e497104715bbbc3909676afa4329fbd59502be1a1a5 |
| SHA512 | 5032dab71e70a4bd1dad2f5cf9380e0097be7993bc46886fed6e4bdd8781f2b10d31338d90d0dc5804665bda2cbfe93f1172250e1a8ab7c9118baf9f156e3c69 |
C:\Users\Admin\AppData\Local\Temp\nsyCD73.tmp\System.dll
| MD5 | 192639861e3dc2dc5c08bb8f8c7260d5 |
| SHA1 | 58d30e460609e22fa0098bc27d928b689ef9af78 |
| SHA256 | 23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6 |
| SHA512 | 6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc |
memory/3972-23237-0x0000000002F20000-0x0000000003989000-memory.dmp
memory/3972-23238-0x0000000077CD1000-0x0000000077DF1000-memory.dmp
memory/3972-23239-0x00000000749C5000-0x00000000749C6000-memory.dmp
memory/3972-23240-0x0000000002F20000-0x0000000003989000-memory.dmp
memory/2444-23241-0x0000000000400000-0x0000000001654000-memory.dmp
memory/2444-23242-0x0000000001660000-0x00000000020C9000-memory.dmp
memory/2444-23243-0x0000000077D58000-0x0000000077D59000-memory.dmp
memory/2444-23244-0x0000000077D75000-0x0000000077D76000-memory.dmp
memory/2444-23245-0x0000000001660000-0x00000000020C9000-memory.dmp
memory/2444-23246-0x0000000000400000-0x0000000001654000-memory.dmp
memory/2444-23247-0x0000000077CD1000-0x0000000077DF1000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2024-11-07 02:30
Reported
2024-11-07 02:32
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 2068 -s 220
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2024-11-07 02:30
Reported
2024-11-07 02:32
Platform
win10v2004-20241007-en
Max time kernel
94s
Max time network
138s
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 3484 wrote to memory of 4672 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3484 wrote to memory of 4672 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3484 wrote to memory of 4672 | 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 4672 -ip 4672
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4672 -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 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.32.126.40.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 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 101.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 70.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |