Analysis Overview
SHA256
85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227
Threat Level: Known bad
The file 3443c50a3f82c68489c42f416079135d was found to be: Known bad.
Malicious Activity Summary
Arkei
Suspicious use of NtCreateProcessExOtherParentProcess
Arkei Stealer Payload
Downloads MZ/PE file
Loads dropped DLL
Reads user/profile data of web browsers
Deletes itself
Checks computer location settings
Checks installed software on the system
Accesses cryptocurrency files/wallets, possible credential harvesting
Enumerates physical storage devices
Program crash
Suspicious behavior: EnumeratesProcesses
Delays execution with timeout.exe
Checks processor information in registry
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates system info in registry
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-01-17 10:27
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-01-17 10:27
Reported
2022-01-17 10:29
Platform
win7-en-20211208
Max time kernel
120s
Max time network
120s
Command Line
Signatures
Arkei
Arkei Stealer Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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\3443c50a3f82c68489c42f416079135d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | N/A |
Reads user/profile data of web browsers
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1904 wrote to memory of 1864 | N/A | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1904 wrote to memory of 1864 | N/A | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1904 wrote to memory of 1864 | N/A | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1904 wrote to memory of 1864 | N/A | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1864 wrote to memory of 1060 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\timeout.exe |
| PID 1864 wrote to memory of 1060 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\timeout.exe |
| PID 1864 wrote to memory of 1060 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\timeout.exe |
| PID 1864 wrote to memory of 1060 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\timeout.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe
"C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe" & exit
C:\Windows\SysWOW64\timeout.exe
timeout /t 5
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | homesteadr.link | udp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
Files
memory/1904-54-0x000000000026B000-0x000000000027C000-memory.dmp
memory/1904-56-0x0000000000400000-0x00000000005D0000-memory.dmp
memory/1904-55-0x00000000003C0000-0x00000000003DC000-memory.dmp
memory/1904-57-0x0000000074F01000-0x0000000074F03000-memory.dmp
\ProgramData\sqlite3.dll
| MD5 | e477a96c8f2b18d6b5c27bde49c990bf |
| SHA1 | e980c9bf41330d1e5bd04556db4646a0210f7409 |
| SHA256 | 16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660 |
| SHA512 | 335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c |
\ProgramData\nss3.dll
| MD5 | bfac4e3c5908856ba17d41edcd455a51 |
| SHA1 | 8eec7e888767aa9e4cca8ff246eb2aacb9170428 |
| SHA256 | e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78 |
| SHA512 | 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66 |
\ProgramData\msvcp140.dll
| MD5 | 109f0f02fd37c84bfc7508d4227d7ed5 |
| SHA1 | ef7420141bb15ac334d3964082361a460bfdb975 |
| SHA256 | 334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4 |
| SHA512 | 46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39 |
\ProgramData\mozglue.dll
| MD5 | 8f73c08a9660691143661bf7332c3c27 |
| SHA1 | 37fa65dd737c50fda710fdbde89e51374d0c204a |
| SHA256 | 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd |
| SHA512 | 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89 |
\ProgramData\vcruntime140.dll
| MD5 | 7587bf9cb4147022cd5681b015183046 |
| SHA1 | f2106306a8f6f0da5afb7fc765cfa0757ad5a628 |
| SHA256 | c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d |
| SHA512 | 0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f |
memory/1864-63-0x0000000000000000-mapping.dmp
memory/1060-64-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-01-17 10:27
Reported
2022-01-17 10:29
Platform
win10v2004-en-20220112
Max time kernel
4265064s
Max time network
152s
Command Line
Signatures
Arkei
Suspicious use of NtCreateProcessExOtherParentProcess
| Description | Indicator | Process | Target |
| PID 1000 created 3312 | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe |
Arkei Stealer Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Downloads MZ/PE file
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | N/A |
Reads user/profile data of web browsers
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
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\3443c50a3f82c68489c42f416079135d.exe |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\SysWOW64\WerFault.exe | N/A |
| Key opened | \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\system32\MusNotification.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\system32\MusNotification.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe | N/A |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Windows\SysWOW64\WerFault.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\SysWOW64\WerFault.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Windows\SysWOW64\WerFault.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Windows\SysWOW64\WerFault.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\MusNotification.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\system32\MusNotification.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe
"C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe"
C:\Windows\system32\MusNotification.exe
C:\Windows\system32\MusNotification.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\3443c50a3f82c68489c42f416079135d.exe" & exit
C:\Windows\SysWOW64\timeout.exe
timeout /t 5
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3312 -ip 3312
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3312 -s 1488
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | time.windows.com | udp |
| US | 8.8.8.8:53 | slscr.update.microsoft.com | udp |
| US | 52.242.101.226:443 | slscr.update.microsoft.com | tcp |
| US | 8.8.8.8:53 | arc.msn.com | udp |
| IE | 20.82.210.154:443 | arc.msn.com | tcp |
| IE | 20.82.210.154:443 | arc.msn.com | tcp |
| US | 8.8.8.8:53 | fe3cr.delivery.mp.microsoft.com | udp |
| US | 8.8.8.8:53 | fe3cr.delivery.mp.microsoft.com | udp |
| US | 52.152.108.96:443 | fe3cr.delivery.mp.microsoft.com | tcp |
| US | 8.8.8.8:53 | slscr.update.microsoft.com | udp |
| US | 52.242.101.226:443 | slscr.update.microsoft.com | tcp |
| US | 8.8.8.8:53 | time.windows.com | udp |
| NL | 40.119.148.38:123 | time.windows.com | udp |
| US | 52.242.101.226:443 | slscr.update.microsoft.com | tcp |
| US | 8.8.8.8:53 | ris.api.iris.microsoft.com | udp |
| US | 52.252.42.28:443 | ris.api.iris.microsoft.com | tcp |
| US | 8.8.8.8:53 | img-prod-cms-rt-microsoft-com.akamaized.net | udp |
| FR | 2.22.147.112:443 | img-prod-cms-rt-microsoft-com.akamaized.net | tcp |
| US | 8.8.8.8:53 | homesteadr.link | udp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
| US | 47.251.43.193:80 | homesteadr.link | tcp |
Files
memory/3312-130-0x0000000000668000-0x0000000000679000-memory.dmp
memory/3312-132-0x0000000000400000-0x00000000005D0000-memory.dmp
memory/3312-131-0x0000000000780000-0x000000000079C000-memory.dmp
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 |
memory/2416-136-0x0000000000000000-mapping.dmp
memory/3592-137-0x0000000000000000-mapping.dmp