Analysis Overview
SHA256
640b55a360b6487d2082c5368a09a99530ed3c8eca2f9cdbe1aacac2c479b174
Threat Level: Known bad
The file 9f20b06fd3a6a4eebd08cb94287d3130N.exe was found to be: Known bad.
Malicious Activity Summary
Oski family
Oski
Credentials from Password Stores: Credentials from Web Browsers
Downloads MZ/PE file
Loads dropped DLL
Deletes itself
Unsecured Credentials: Credentials In Files
Checks computer location settings
Reads user/profile data of web browsers
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Unsigned PE
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Kills process with taskkill
Checks processor information in registry
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-07-31 10:36
Signatures
Oski family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-31 10:36
Reported
2024-07-31 10:38
Platform
win10v2004-20240730-en
Max time kernel
93s
Max time network
94s
Command Line
Signatures
Oski
Credentials from Password Stores: Credentials from Web Browsers
Downloads MZ/PE file
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2951562807-3718269429-4208157415-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | N/A |
Reads user/profile data of web browsers
Unsecured Credentials: Credentials In Files
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Enumerates physical storage devices
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\9f20b06fd3a6a4eebd08cb94287d3130N.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.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 4408 wrote to memory of 2236 | N/A | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4408 wrote to memory of 2236 | N/A | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4408 wrote to memory of 2236 | N/A | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2236 wrote to memory of 1336 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 2236 wrote to memory of 1336 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 2236 wrote to memory of 1336 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe
"C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /pid 4408 & erase C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe & RD /S /Q C:\\ProgramData\\585758929811409\\* & exit
C:\Windows\SysWOW64\taskkill.exe
taskkill /pid 4408
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | edw.hstn.me | udp |
| GB | 185.27.134.126:80 | edw.hstn.me | tcp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 126.134.27.185.in-addr.arpa | udp |
| GB | 185.27.134.126:80 | edw.hstn.me | tcp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
Files
C:\ProgramData\sqlite3.dll
| MD5 | e477a96c8f2b18d6b5c27bde49c990bf |
| SHA1 | e980c9bf41330d1e5bd04556db4646a0210f7409 |
| SHA256 | 16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660 |
| SHA512 | 335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c |
C:\ProgramData\nss3.dll
| MD5 | bfac4e3c5908856ba17d41edcd455a51 |
| SHA1 | 8eec7e888767aa9e4cca8ff246eb2aacb9170428 |
| SHA256 | e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78 |
| SHA512 | 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66 |
C:\ProgramData\mozglue.dll
| MD5 | 8f73c08a9660691143661bf7332c3c27 |
| SHA1 | 37fa65dd737c50fda710fdbde89e51374d0c204a |
| SHA256 | 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd |
| SHA512 | 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-31 10:36
Reported
2024-07-31 10:38
Platform
win7-20240708-en
Max time kernel
15s
Max time network
16s
Command Line
Signatures
Oski
Credentials from Password Stores: Credentials from Web Browsers
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\9f20b06fd3a6a4eebd08cb94287d3130N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | N/A |
Reads user/profile data of web browsers
Unsecured Credentials: Credentials In Files
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
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\9f20b06fd3a6a4eebd08cb94287d3130N.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 |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.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 2292 wrote to memory of 3044 | N/A | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2292 wrote to memory of 3044 | N/A | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2292 wrote to memory of 3044 | N/A | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2292 wrote to memory of 3044 | N/A | C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3044 wrote to memory of 1756 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 3044 wrote to memory of 1756 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 3044 wrote to memory of 1756 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 3044 wrote to memory of 1756 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe
"C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /pid 2292 & erase C:\Users\Admin\AppData\Local\Temp\9f20b06fd3a6a4eebd08cb94287d3130N.exe & RD /S /Q C:\\ProgramData\\628876833549439\\* & exit
C:\Windows\SysWOW64\taskkill.exe
taskkill /pid 2292
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | edw.hstn.me | udp |
| GB | 185.27.134.126:80 | edw.hstn.me | tcp |
| GB | 185.27.134.126:80 | edw.hstn.me | tcp |
Files
\ProgramData\sqlite3.dll
| MD5 | e477a96c8f2b18d6b5c27bde49c990bf |
| SHA1 | e980c9bf41330d1e5bd04556db4646a0210f7409 |
| SHA256 | 16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660 |
| SHA512 | 335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c |
\ProgramData\nss3.dll
| MD5 | bfac4e3c5908856ba17d41edcd455a51 |
| SHA1 | 8eec7e888767aa9e4cca8ff246eb2aacb9170428 |
| SHA256 | e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78 |
| SHA512 | 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66 |
\ProgramData\mozglue.dll
| MD5 | 8f73c08a9660691143661bf7332c3c27 |
| SHA1 | 37fa65dd737c50fda710fdbde89e51374d0c204a |
| SHA256 | 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd |
| SHA512 | 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89 |