Analysis Overview
SHA256
40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623
Threat Level: Known bad
The file 40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623 was found to be: Known bad.
Malicious Activity Summary
GCleaner
Downloads MZ/PE file
Deletes itself
Loads dropped DLL
Checks computer location settings
Enumerates physical storage devices
Unsigned PE
Program crash
System Location Discovery: System Language Discovery
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Kills process with taskkill
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-31 12:36
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-31 12:36
Reported
2024-08-31 12:38
Platform
win10v2004-20240802-en
Max time kernel
134s
Max time network
140s
Command Line
Signatures
GCleaner
Downloads MZ/PE file
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe | N/A |
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\taskkill.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe | N/A |
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2716 wrote to memory of 3668 | N/A | C:\Users\Admin\AppData\Local\Temp\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2716 wrote to memory of 3668 | N/A | C:\Users\Admin\AppData\Local\Temp\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2716 wrote to memory of 3668 | N/A | C:\Users\Admin\AppData\Local\Temp\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3668 wrote to memory of 4068 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 3668 wrote to memory of 4068 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 3668 wrote to memory of 4068 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe
"C:\Users\Admin\AppData\Local\Temp\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2716 -ip 2716
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 456
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2716 -ip 2716
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 764
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2716 -ip 2716
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 784
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2716 -ip 2716
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 824
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2716 -ip 2716
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 816
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2716 -ip 2716
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 928
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2716 -ip 2716
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 1004
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2716 -ip 2716
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 1072
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2716 -ip 2716
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 1568
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe" & exit
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2716 -ip 2716
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 492
C:\Windows\SysWOW64\taskkill.exe
taskkill /im "40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe" /f
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 | g.bing.com | udp |
| US | 150.171.27.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 71.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| RU | 80.66.75.114:80 | 80.66.75.114 | tcp |
| US | 8.8.8.8:53 | 114.75.66.80.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.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 | 55.36.223.20.in-addr.arpa | udp |
Files
memory/2716-2-0x0000000002220000-0x000000000225C000-memory.dmp
memory/2716-1-0x0000000000880000-0x0000000000980000-memory.dmp
memory/2716-3-0x0000000000400000-0x000000000043F000-memory.dmp
memory/2716-8-0x0000000010000000-0x000000001001C000-memory.dmp
memory/2716-13-0x0000000000880000-0x0000000000980000-memory.dmp
memory/2716-16-0x0000000002220000-0x000000000225C000-memory.dmp
memory/2716-15-0x0000000000400000-0x00000000005F7000-memory.dmp
memory/2716-17-0x0000000000400000-0x000000000043F000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\ZK5NPJWQ\download[1].htm
| MD5 | cfcd208495d565ef66e7dff9f98764da |
| SHA1 | b6589fc6ab0dc82cf12099d1c2d40ab994e8410c |
| SHA256 | 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9 |
| SHA512 | 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99 |
memory/2716-27-0x0000000000400000-0x00000000005F7000-memory.dmp
memory/2716-36-0x0000000000400000-0x000000000043F000-memory.dmp
memory/2716-35-0x0000000000400000-0x00000000005F7000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-31 12:36
Reported
2024-08-31 12:38
Platform
win7-20240705-en
Max time kernel
121s
Max time network
122s
Command Line
Signatures
GCleaner
Downloads MZ/PE file
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.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\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\taskkill.exe | N/A |
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe
"C:\Users\Admin\AppData\Local\Temp\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe" & exit
C:\Windows\SysWOW64\taskkill.exe
taskkill /im "40373b2b67af54380809aadcc91404f2a24c343bf3230ff02abb79847995a623.exe" /f
Network
| Country | Destination | Domain | Proto |
| RU | 80.66.75.114:80 | 80.66.75.114 | tcp |
Files
memory/2784-1-0x0000000000750000-0x0000000000850000-memory.dmp
memory/2784-2-0x0000000000220000-0x000000000025C000-memory.dmp
memory/2784-3-0x0000000000400000-0x000000000043F000-memory.dmp
memory/2784-8-0x0000000010000000-0x000000001001C000-memory.dmp
memory/2784-13-0x0000000000750000-0x0000000000850000-memory.dmp
memory/2784-15-0x0000000000220000-0x000000000025C000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\1VX38S3F\download[1].htm
| MD5 | cfcd208495d565ef66e7dff9f98764da |
| SHA1 | b6589fc6ab0dc82cf12099d1c2d40ab994e8410c |
| SHA256 | 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9 |
| SHA512 | 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99 |
memory/2784-18-0x0000000000400000-0x000000000043F000-memory.dmp
memory/2784-17-0x0000000000400000-0x00000000005F7000-memory.dmp
\Users\Admin\AppData\Local\Temp\r373zA6BkwiWutN1UKazwDbXE\Y-Cleaner.exe
| MD5 | a8cf5621811f7fac55cfe8cb3fa6b9f6 |
| SHA1 | 121356839e8138a03141f5f5856936a85bd2a474 |
| SHA256 | 614a0362ab87cee48d0935b5bb957d539be1d94c6fdeb3fe42fac4fbe182c10c |
| SHA512 | 4479d951435f222ca7306774002f030972c9f1715d6aaf512fca9420dd79cb6d08240f80129f213851773290254be34f0ff63c7b1f4d554a7db5f84b69e84bdd |
memory/2784-37-0x0000000000400000-0x000000000043F000-memory.dmp
memory/2784-36-0x0000000000750000-0x0000000000850000-memory.dmp
memory/2784-35-0x0000000000400000-0x00000000005F7000-memory.dmp