Analysis Overview
SHA256
3bc3579f84354fe3b51fd60254362bb523a76beb34adb1fa1cedd2b34dfbb61a
Threat Level: Known bad
The file PO7623jarjarjarjarjarjarj.jar was found to be: Known bad.
Malicious Activity Summary
STRRAT
Drops startup file
Adds Run key to start application
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-07-09 08:19
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-07-09 08:19
Reported
2023-07-09 08:22
Platform
win7-20230703-en
Max time kernel
72s
Max time network
76s
Command Line
Signatures
STRRAT
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PO7623jarjarjarjarjarjarj.jar | C:\Windows\system32\java.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1724861073-2584418204-2594431177-1000\Software\Microsoft\Windows\CurrentVersion\Run\PO7623jarjarjarjarjarjarj = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\PO7623jarjarjarjarjarjarj.jar\"" | C:\Windows\system32\java.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PO7623jarjarjarjarjarjarj = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\PO7623jarjarjarjarjarjarj.jar\"" | C:\Windows\system32\java.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1340 wrote to memory of 1972 | N/A | C:\Windows\system32\java.exe | C:\Windows\system32\cmd.exe |
| PID 1340 wrote to memory of 1972 | N/A | C:\Windows\system32\java.exe | C:\Windows\system32\cmd.exe |
| PID 1340 wrote to memory of 1972 | N/A | C:\Windows\system32\java.exe | C:\Windows\system32\cmd.exe |
| PID 1340 wrote to memory of 1400 | N/A | C:\Windows\system32\java.exe | C:\Program Files\Java\jre7\bin\java.exe |
| PID 1340 wrote to memory of 1400 | N/A | C:\Windows\system32\java.exe | C:\Program Files\Java\jre7\bin\java.exe |
| PID 1340 wrote to memory of 1400 | N/A | C:\Windows\system32\java.exe | C:\Program Files\Java\jre7\bin\java.exe |
| PID 1972 wrote to memory of 1744 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\schtasks.exe |
| PID 1972 wrote to memory of 1744 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\schtasks.exe |
| PID 1972 wrote to memory of 1744 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Windows\system32\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\PO7623jarjarjarjarjarjarj.jar
C:\Windows\system32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\PO7623jarjarjarjarjarjarj.jar"
C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\PO7623jarjarjarjarjarjarj.jar"
C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\PO7623jarjarjarjarjarjarj.jar"
Network
| Country | Destination | Domain | Proto |
| US | 192.229.211.108:80 | tcp |
Files
memory/1340-63-0x0000000000120000-0x0000000000121000-memory.dmp
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\PO7623jarjarjarjarjarjarj.jar
| MD5 | 0e3fdb5b619f6a39b6a6ea16cd930c97 |
| SHA1 | 43a992927b4019290c7ce11fa0d8f4ac0913c063 |
| SHA256 | 3bc3579f84354fe3b51fd60254362bb523a76beb34adb1fa1cedd2b34dfbb61a |
| SHA512 | 811dd76df42c9f8f290ffe0ae4c16963c62ff285fe68500c23292f36516e2beb90a152b567593e32e2f30b7c678fac89aab1b274e6c8376c96f7ee8c463b1ff7 |
C:\Users\Admin\AppData\Roaming\PO7623jarjarjarjarjarjarj.jar
| MD5 | 0e3fdb5b619f6a39b6a6ea16cd930c97 |
| SHA1 | 43a992927b4019290c7ce11fa0d8f4ac0913c063 |
| SHA256 | 3bc3579f84354fe3b51fd60254362bb523a76beb34adb1fa1cedd2b34dfbb61a |
| SHA512 | 811dd76df42c9f8f290ffe0ae4c16963c62ff285fe68500c23292f36516e2beb90a152b567593e32e2f30b7c678fac89aab1b274e6c8376c96f7ee8c463b1ff7 |
Analysis: behavioral2
Detonation Overview
Submitted
2023-07-09 08:19
Reported
2023-07-09 08:22
Platform
win10v2004-20230703-en
Max time kernel
142s
Max time network
151s
Command Line
Signatures
STRRAT
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PO7623jarjarjarjarjarjarj.jar | C:\ProgramData\Oracle\Java\javapath\java.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3011986978-2180659500-3669311805-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PO7623jarjarjarjarjarjarj = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\PO7623jarjarjarjarjarjarj.jar\"" | C:\ProgramData\Oracle\Java\javapath\java.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PO7623jarjarjarjarjarjarj = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\PO7623jarjarjarjarjarjarj.jar\"" | C:\ProgramData\Oracle\Java\javapath\java.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3012 wrote to memory of 560 | N/A | C:\ProgramData\Oracle\Java\javapath\java.exe | C:\Windows\SYSTEM32\cmd.exe |
| PID 3012 wrote to memory of 560 | N/A | C:\ProgramData\Oracle\Java\javapath\java.exe | C:\Windows\SYSTEM32\cmd.exe |
| PID 3012 wrote to memory of 4256 | N/A | C:\ProgramData\Oracle\Java\javapath\java.exe | C:\Program Files\Java\jre1.8.0_66\bin\java.exe |
| PID 3012 wrote to memory of 4256 | N/A | C:\ProgramData\Oracle\Java\javapath\java.exe | C:\Program Files\Java\jre1.8.0_66\bin\java.exe |
| PID 560 wrote to memory of 1680 | N/A | C:\Windows\SYSTEM32\cmd.exe | C:\Windows\system32\schtasks.exe |
| PID 560 wrote to memory of 1680 | N/A | C:\Windows\SYSTEM32\cmd.exe | C:\Windows\system32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\ProgramData\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\PO7623jarjarjarjarjarjarj.jar
C:\Windows\SYSTEM32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\PO7623jarjarjarjarjarjarj.jar"
C:\Program Files\Java\jre1.8.0_66\bin\java.exe
"C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\PO7623jarjarjarjarjarjarj.jar"
C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\PO7623jarjarjarjarjarjarj.jar"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | efcc.duckdns.org | udp |
| US | 79.110.49.161:1243 | efcc.duckdns.org | tcp |
| 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 |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 254.133.241.8.in-addr.arpa | udp |
| N/A | 127.0.0.1:1243 | tcp | |
| US | 79.110.49.161:1243 | efcc.duckdns.org | tcp |
| N/A | 127.0.0.1:1243 | tcp | |
| US | 79.110.49.161:1243 | efcc.duckdns.org | tcp |
| N/A | 127.0.0.1:1243 | tcp | |
| US | 79.110.49.161:1243 | efcc.duckdns.org | tcp |
| N/A | 127.0.0.1:1243 | tcp | |
| US | 8.8.8.8:53 | efcc.duckdns.org | udp |
| US | 79.110.49.161:1243 | efcc.duckdns.org | tcp |
| US | 8.8.8.8:53 | 66.112.168.52.in-addr.arpa | udp |
Files
memory/3012-143-0x0000000001140000-0x0000000001141000-memory.dmp
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\PO7623jarjarjarjarjarjarj.jar
| MD5 | 0e3fdb5b619f6a39b6a6ea16cd930c97 |
| SHA1 | 43a992927b4019290c7ce11fa0d8f4ac0913c063 |
| SHA256 | 3bc3579f84354fe3b51fd60254362bb523a76beb34adb1fa1cedd2b34dfbb61a |
| SHA512 | 811dd76df42c9f8f290ffe0ae4c16963c62ff285fe68500c23292f36516e2beb90a152b567593e32e2f30b7c678fac89aab1b274e6c8376c96f7ee8c463b1ff7 |
C:\Users\Admin\AppData\Roaming\PO7623jarjarjarjarjarjarj.jar
| MD5 | 0e3fdb5b619f6a39b6a6ea16cd930c97 |
| SHA1 | 43a992927b4019290c7ce11fa0d8f4ac0913c063 |
| SHA256 | 3bc3579f84354fe3b51fd60254362bb523a76beb34adb1fa1cedd2b34dfbb61a |
| SHA512 | 811dd76df42c9f8f290ffe0ae4c16963c62ff285fe68500c23292f36516e2beb90a152b567593e32e2f30b7c678fac89aab1b274e6c8376c96f7ee8c463b1ff7 |
C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
| MD5 | bd23a0c9c41dbfe87855f6f5032c7771 |
| SHA1 | ad3d96dec10c5791f7874f8315c2382e56bb0fea |
| SHA256 | d5e47eb34eaee3262cf1a9e1340f4f1634bd72a7f9a91a64dee6cd08caa632a5 |
| SHA512 | e54f1f79bd986e6a223cbdfdead504800031da065e179ba28c88ec3564be48113fa248ef889deb13ec2a77c81d75343d8b006fbfcf72d5c25150b3c8744a1356 |
memory/4256-165-0x0000000000E40000-0x0000000000E41000-memory.dmp