Analysis Overview
SHA256
27c43e0863d1f53297dc16f09626d956c6f86cf3285bbd8eb8488eccb564fa66
Threat Level: Known bad
The file bffa608e609a6e2f67d01bb5f64ba70a.exe was found to be: Known bad.
Malicious Activity Summary
Arkei
Mars Stealer
Loads dropped DLL
Accesses cryptocurrency files/wallets, possible credential harvesting
Suspicious use of SetThreadContext
Unsigned PE
Program crash
Checks processor information in registry
Delays execution with timeout.exe
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-16 17:18
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-16 17:18
Reported
2023-12-16 17:20
Platform
win7-20231215-en
Max time kernel
118s
Max time network
119s
Command Line
Signatures
Arkei
Mars Stealer
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe | N/A |
Accesses cryptocurrency files/wallets, possible credential harvesting
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2268 set thread context of 3060 | N/A | C:\Users\Admin\AppData\Local\Temp\bffa608e609a6e2f67d01bb5f64ba70a.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.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 AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\bffa608e609a6e2f67d01bb5f64ba70a.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\bffa608e609a6e2f67d01bb5f64ba70a.exe
"C:\Users\Admin\AppData\Local\Temp\bffa608e609a6e2f67d01bb5f64ba70a.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe" & exit
C:\Windows\SysWOW64\timeout.exe
timeout /t 5
Network
| Country | Destination | Domain | Proto |
| BG | 91.92.250.149:80 | 91.92.250.149 | tcp |
| BG | 91.92.250.149:80 | 91.92.250.149 | tcp |
| BG | 91.92.250.149:80 | 91.92.250.149 | tcp |
Files
memory/2268-0-0x0000000000EC0000-0x0000000001166000-memory.dmp
memory/2268-1-0x000007FEF5900000-0x000007FEF62EC000-memory.dmp
memory/3060-10-0x0000000000400000-0x000000000043D000-memory.dmp
memory/3060-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/3060-8-0x0000000000400000-0x000000000043D000-memory.dmp
memory/3060-13-0x0000000000400000-0x000000000043D000-memory.dmp
memory/3060-12-0x0000000000400000-0x000000000043D000-memory.dmp
memory/3060-7-0x0000000000400000-0x000000000043D000-memory.dmp
memory/3060-6-0x0000000000400000-0x000000000043D000-memory.dmp
memory/3060-5-0x0000000000400000-0x000000000043D000-memory.dmp
memory/3060-4-0x0000000000400000-0x000000000043D000-memory.dmp
memory/3060-3-0x0000000000400000-0x000000000043D000-memory.dmp
memory/2268-2-0x000000001B310000-0x000000001B390000-memory.dmp
memory/3060-14-0x0000000060900000-0x0000000060992000-memory.dmp
\ProgramData\nss3.dll
| MD5 | bfac4e3c5908856ba17d41edcd455a51 |
| SHA1 | 8eec7e888767aa9e4cca8ff246eb2aacb9170428 |
| SHA256 | e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78 |
| SHA512 | 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66 |
\ProgramData\mozglue.dll
| MD5 | 8f73c08a9660691143661bf7332c3c27 |
| SHA1 | 37fa65dd737c50fda710fdbde89e51374d0c204a |
| SHA256 | 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd |
| SHA512 | 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89 |
memory/2268-51-0x000007FEF5900000-0x000007FEF62EC000-memory.dmp
memory/3060-52-0x0000000000400000-0x000000000043D000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-16 17:18
Reported
2023-12-16 17:20
Platform
win10v2004-20231215-en
Max time kernel
141s
Max time network
145s
Command Line
Signatures
Mars Stealer
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 916 set thread context of 4424 | N/A | C:\Users\Admin\AppData\Local\Temp\bffa608e609a6e2f67d01bb5f64ba70a.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\bffa608e609a6e2f67d01bb5f64ba70a.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\bffa608e609a6e2f67d01bb5f64ba70a.exe
"C:\Users\Admin\AppData\Local\Temp\bffa608e609a6e2f67d01bb5f64ba70a.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4424 -ip 4424
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4424 -s 1280
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 23.181.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| BG | 91.92.250.149:80 | 91.92.250.149 | tcp |
| US | 8.8.8.8:53 | 149.250.92.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 178.223.142.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 210.143.182.52.in-addr.arpa | udp |
Files
memory/916-0-0x00000000001F0000-0x0000000000496000-memory.dmp
memory/916-1-0x00007FFBE7600000-0x00007FFBE80C1000-memory.dmp
memory/916-2-0x000000001B260000-0x000000001B270000-memory.dmp
memory/4424-3-0x0000000000400000-0x000000000043D000-memory.dmp
memory/916-4-0x00007FFBE7600000-0x00007FFBE80C1000-memory.dmp
memory/4424-6-0x0000000000400000-0x000000000043D000-memory.dmp
memory/4424-7-0x0000000000400000-0x000000000043D000-memory.dmp
memory/4424-8-0x0000000060900000-0x0000000060992000-memory.dmp
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/4424-59-0x0000000000400000-0x000000000043D000-memory.dmp