Analysis Overview
SHA256
8b235767d5a49ed7fdcdc6964f6c0f2cd9b389e4f9de7121814c9947796ccf28
Threat Level: Known bad
The file PaymentAdvice.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
2023-07-18 04:16
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-07-18 04:16
Reported
2023-07-18 04:18
Platform
win7-20230712-en
Max time kernel
121s
Max time network
124s
Command Line
Signatures
STRRAT
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PaymentAdvice.jar | C:\Windows\system32\java.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PaymentAdvice = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\PaymentAdvice.jar\"" | C:\Windows\system32\java.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2969888527-3102471180-2307688834-1000\Software\Microsoft\Windows\CurrentVersion\Run\PaymentAdvice = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\PaymentAdvice.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 2140 wrote to memory of 1312 | N/A | C:\Windows\system32\java.exe | C:\Windows\system32\cmd.exe |
| PID 2140 wrote to memory of 1312 | N/A | C:\Windows\system32\java.exe | C:\Windows\system32\cmd.exe |
| PID 2140 wrote to memory of 1312 | N/A | C:\Windows\system32\java.exe | C:\Windows\system32\cmd.exe |
| PID 1312 wrote to memory of 2788 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\schtasks.exe |
| PID 1312 wrote to memory of 2788 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\schtasks.exe |
| PID 1312 wrote to memory of 2788 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\schtasks.exe |
| PID 2140 wrote to memory of 1344 | N/A | C:\Windows\system32\java.exe | C:\Program Files\Java\jre7\bin\java.exe |
| PID 2140 wrote to memory of 1344 | N/A | C:\Windows\system32\java.exe | C:\Program Files\Java\jre7\bin\java.exe |
| PID 2140 wrote to memory of 1344 | N/A | C:\Windows\system32\java.exe | C:\Program Files\Java\jre7\bin\java.exe |
Uses Task Scheduler COM API
Processes
C:\Windows\system32\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\PaymentAdvice.jar
C:\Windows\system32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\PaymentAdvice.jar"
C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\PaymentAdvice.jar"
C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\PaymentAdvice.jar"
Network
Files
memory/2140-62-0x0000000002260000-0x0000000005260000-memory.dmp
memory/2140-64-0x0000000000220000-0x0000000000221000-memory.dmp
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\PaymentAdvice.jar
| MD5 | 26da342748aa3edf5a5cd07053bf2a13 |
| SHA1 | 1494b07921135f27ddac809c4d3eccc44ec1b857 |
| SHA256 | 8b235767d5a49ed7fdcdc6964f6c0f2cd9b389e4f9de7121814c9947796ccf28 |
| SHA512 | 163466911525bc7f2e7dccd14355e86d2a5a9e658c8ca169b99a9688fb0506d7063d73cfc2b044910869e0fede0c8e8bb1d456329f09957357e63ec8d8189af8 |
C:\Users\Admin\AppData\Roaming\PaymentAdvice.jar
| MD5 | 26da342748aa3edf5a5cd07053bf2a13 |
| SHA1 | 1494b07921135f27ddac809c4d3eccc44ec1b857 |
| SHA256 | 8b235767d5a49ed7fdcdc6964f6c0f2cd9b389e4f9de7121814c9947796ccf28 |
| SHA512 | 163466911525bc7f2e7dccd14355e86d2a5a9e658c8ca169b99a9688fb0506d7063d73cfc2b044910869e0fede0c8e8bb1d456329f09957357e63ec8d8189af8 |
Analysis: behavioral2
Detonation Overview
Submitted
2023-07-18 04:16
Reported
2023-07-18 04:18
Platform
win10v2004-20230703-en
Max time kernel
14s
Max time network
70s
Command Line
Signatures
Processes
C:\ProgramData\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\PaymentAdvice.jar
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
Files
memory/4408-135-0x0000000003360000-0x0000000004360000-memory.dmp
memory/4408-144-0x0000000001600000-0x0000000001601000-memory.dmp