Analysis Overview
SHA256
f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f
Threat Level: Known bad
The file f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f was found to be: Known bad.
Malicious Activity Summary
GCleaner
Downloads MZ/PE file
Checks computer location settings
Deletes itself
Loads dropped DLL
Program crash
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Unsigned PE
Kills process with taskkill
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-02 12:13
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-02 12:13
Reported
2024-09-02 12:15
Platform
win7-20240708-en
Max time kernel
29s
Max time network
29s
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\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.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\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.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\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe
"C:\Users\Admin\AppData\Local\Temp\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe" & exit
C:\Windows\SysWOW64\taskkill.exe
taskkill /im "f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe" /f
Network
| Country | Destination | Domain | Proto |
| RU | 80.66.75.114:80 | 80.66.75.114 | tcp |
Files
memory/2908-1-0x00000000008A0000-0x00000000009A0000-memory.dmp
memory/2908-2-0x0000000000400000-0x000000000043F000-memory.dmp
memory/2908-3-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2908-8-0x0000000010000000-0x000000001001C000-memory.dmp
memory/2908-14-0x00000000008A0000-0x00000000009A0000-memory.dmp
memory/2908-15-0x0000000000400000-0x000000000043F000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\0E1IWGZ4\download[1].htm
| MD5 | cfcd208495d565ef66e7dff9f98764da |
| SHA1 | b6589fc6ab0dc82cf12099d1c2d40ab994e8410c |
| SHA256 | 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9 |
| SHA512 | 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99 |
memory/2908-17-0x0000000000400000-0x0000000000453000-memory.dmp
\Users\Admin\AppData\Local\Temp\9VRvanQX\Y-Cleaner.exe
| MD5 | a8cf5621811f7fac55cfe8cb3fa6b9f6 |
| SHA1 | 121356839e8138a03141f5f5856936a85bd2a474 |
| SHA256 | 614a0362ab87cee48d0935b5bb957d539be1d94c6fdeb3fe42fac4fbe182c10c |
| SHA512 | 4479d951435f222ca7306774002f030972c9f1715d6aaf512fca9420dd79cb6d08240f80129f213851773290254be34f0ff63c7b1f4d554a7db5f84b69e84bdd |
memory/2908-34-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2908-35-0x0000000000400000-0x000000000043F000-memory.dmp
memory/2908-36-0x00000000008A0000-0x00000000009A0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-02 12:13
Reported
2024-09-02 12:15
Platform
win10v2004-20240802-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
GCleaner
Downloads MZ/PE file
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe | N/A |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe |
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\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.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
| Description | Indicator | Process | Target |
| PID 4556 wrote to memory of 3752 | N/A | C:\Users\Admin\AppData\Local\Temp\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4556 wrote to memory of 3752 | N/A | C:\Users\Admin\AppData\Local\Temp\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4556 wrote to memory of 3752 | N/A | C:\Users\Admin\AppData\Local\Temp\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3752 wrote to memory of 3176 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 3752 wrote to memory of 3176 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 3752 wrote to memory of 3176 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe
"C:\Users\Admin\AppData\Local\Temp\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe" & exit
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4556 -ip 4556
C:\Windows\SysWOW64\taskkill.exe
taskkill /im "f881f3ca74a2f3a25fbbb77a8208296c5bb0e9305c22752235234ef5f71e324f.exe" /f
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4556 -s 1776
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 136.32.126.40.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 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.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 | 79.190.18.2.in-addr.arpa | udp |
| N/A | 20.189.173.16:443 | tcp | |
| SE | 192.229.221.95:80 | tcp |
Files
memory/4556-1-0x00000000006F0000-0x00000000007F0000-memory.dmp
memory/4556-2-0x00000000020D0000-0x000000000210C000-memory.dmp
memory/4556-3-0x0000000000400000-0x000000000043F000-memory.dmp
memory/4556-8-0x0000000010000000-0x000000001001C000-memory.dmp
memory/4556-13-0x00000000006F0000-0x00000000007F0000-memory.dmp
memory/4556-15-0x0000000000400000-0x0000000000453000-memory.dmp
memory/4556-16-0x00000000020D0000-0x000000000210C000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\OD2FK6XO\download[1].htm
| MD5 | cfcd208495d565ef66e7dff9f98764da |
| SHA1 | b6589fc6ab0dc82cf12099d1c2d40ab994e8410c |
| SHA256 | 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9 |
| SHA512 | 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99 |
memory/4556-18-0x0000000000400000-0x000000000043F000-memory.dmp
memory/4556-29-0x0000000000400000-0x0000000000453000-memory.dmp
memory/4556-36-0x0000000000400000-0x000000000043F000-memory.dmp
memory/4556-35-0x0000000000400000-0x0000000000453000-memory.dmp