Analysis Overview
SHA256
639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b
Threat Level: Known bad
The file 639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b was found to be: Known bad.
Malicious Activity Summary
GCleaner
Downloads MZ/PE file
Loads dropped DLL
Checks computer location settings
Deletes itself
System Location Discovery: System Language Discovery
Unsigned PE
Enumerates physical storage devices
Program crash
Kills process with taskkill
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-05 10:19
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-05 10:19
Reported
2024-09-05 10:22
Platform
win7-20240903-en
Max time kernel
117s
Max time network
118s
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\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.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\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.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\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe
"C:\Users\Admin\AppData\Local\Temp\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe" & exit
C:\Windows\SysWOW64\taskkill.exe
taskkill /im "639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe" /f
Network
| Country | Destination | Domain | Proto |
| RU | 80.66.75.114:80 | 80.66.75.114 | tcp |
Files
memory/2096-1-0x0000000000520000-0x0000000000620000-memory.dmp
memory/2096-3-0x0000000000400000-0x0000000000452000-memory.dmp
memory/2096-2-0x0000000000400000-0x000000000043F000-memory.dmp
memory/2096-8-0x0000000010000000-0x000000001001C000-memory.dmp
memory/2096-13-0x0000000000520000-0x0000000000620000-memory.dmp
memory/2096-14-0x0000000000400000-0x000000000043F000-memory.dmp
memory/2096-15-0x0000000000400000-0x0000000000452000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\7CNUR30T\download[1].htm
| MD5 | cfcd208495d565ef66e7dff9f98764da |
| SHA1 | b6589fc6ab0dc82cf12099d1c2d40ab994e8410c |
| SHA256 | 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9 |
| SHA512 | 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99 |
memory/2096-26-0x0000000000400000-0x0000000000452000-memory.dmp
\Users\Admin\AppData\Local\Temp\50MFCYu98TWaU4Vv\Y-Cleaner.exe
| MD5 | a8cf5621811f7fac55cfe8cb3fa6b9f6 |
| SHA1 | 121356839e8138a03141f5f5856936a85bd2a474 |
| SHA256 | 614a0362ab87cee48d0935b5bb957d539be1d94c6fdeb3fe42fac4fbe182c10c |
| SHA512 | 4479d951435f222ca7306774002f030972c9f1715d6aaf512fca9420dd79cb6d08240f80129f213851773290254be34f0ff63c7b1f4d554a7db5f84b69e84bdd |
memory/2096-36-0x0000000000400000-0x0000000000452000-memory.dmp
memory/2096-38-0x0000000000520000-0x0000000000620000-memory.dmp
memory/2096-37-0x0000000000400000-0x000000000043F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-05 10:19
Reported
2024-09-05 10:22
Platform
win10v2004-20240802-en
Max time kernel
91s
Max time network
95s
Command Line
Signatures
GCleaner
Downloads MZ/PE file
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.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\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| 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\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.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 4196 wrote to memory of 4928 | N/A | C:\Users\Admin\AppData\Local\Temp\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4196 wrote to memory of 4928 | N/A | C:\Users\Admin\AppData\Local\Temp\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4196 wrote to memory of 4928 | N/A | C:\Users\Admin\AppData\Local\Temp\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4928 wrote to memory of 1940 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 4928 wrote to memory of 1940 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 4928 wrote to memory of 1940 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe
"C:\Users\Admin\AppData\Local\Temp\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe" & exit
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4196 -ip 4196
C:\Windows\SysWOW64\taskkill.exe
taskkill /im "639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe" /f
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4196 -s 1588
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.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 |
| 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 | 217.106.137.52.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 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
Files
memory/4196-1-0x00000000006B0000-0x00000000007B0000-memory.dmp
memory/4196-2-0x0000000002060000-0x000000000209B000-memory.dmp
memory/4196-3-0x0000000000400000-0x000000000043F000-memory.dmp
memory/4196-8-0x0000000010000000-0x000000001001C000-memory.dmp
memory/4196-13-0x00000000006B0000-0x00000000007B0000-memory.dmp
memory/4196-15-0x0000000000400000-0x0000000000452000-memory.dmp
memory/4196-16-0x0000000002060000-0x000000000209B000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\BOIFDBOU\download[1].htm
| MD5 | cfcd208495d565ef66e7dff9f98764da |
| SHA1 | b6589fc6ab0dc82cf12099d1c2d40ab994e8410c |
| SHA256 | 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9 |
| SHA512 | 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99 |
memory/4196-18-0x0000000000400000-0x000000000043F000-memory.dmp
memory/4196-27-0x0000000000400000-0x0000000000452000-memory.dmp
memory/4196-35-0x0000000000400000-0x0000000000452000-memory.dmp
memory/4196-36-0x0000000000400000-0x000000000043F000-memory.dmp