Analysis Overview
SHA256
867ca4a1a43d4b705777152c572ab2149c5f69d98f3fda0d9a8dbc3740a5d807
Threat Level: Known bad
The file 00200723.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 V15
Analysis: static1
Detonation Overview
Reported
2023-07-21 06:25
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-07-21 06:25
Reported
2023-07-21 06:27
Platform
win7-20230712-en
Max time kernel
122s
Max time network
126s
Command Line
Signatures
STRRAT
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\00200723.jar | C:\Windows\system32\java.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000\Software\Microsoft\Windows\CurrentVersion\Run\00200723 = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\00200723.jar\"" | C:\Windows\system32\java.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\00200723 = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\00200723.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 1996 wrote to memory of 2152 | N/A | C:\Windows\system32\java.exe | C:\Windows\system32\cmd.exe |
| PID 1996 wrote to memory of 2152 | N/A | C:\Windows\system32\java.exe | C:\Windows\system32\cmd.exe |
| PID 1996 wrote to memory of 2152 | N/A | C:\Windows\system32\java.exe | C:\Windows\system32\cmd.exe |
| PID 1996 wrote to memory of 2960 | N/A | C:\Windows\system32\java.exe | C:\Program Files\Java\jre7\bin\java.exe |
| PID 1996 wrote to memory of 2960 | N/A | C:\Windows\system32\java.exe | C:\Program Files\Java\jre7\bin\java.exe |
| PID 1996 wrote to memory of 2960 | N/A | C:\Windows\system32\java.exe | C:\Program Files\Java\jre7\bin\java.exe |
| PID 2152 wrote to memory of 2292 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\schtasks.exe |
| PID 2152 wrote to memory of 2292 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\schtasks.exe |
| PID 2152 wrote to memory of 2292 | 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\00200723.jar
C:\Windows\system32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\00200723.jar"
C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\00200723.jar"
C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\00200723.jar"
Network
Files
memory/1996-63-0x0000000002400000-0x0000000005400000-memory.dmp
memory/1996-64-0x0000000000130000-0x0000000000131000-memory.dmp
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\00200723.jar
| MD5 | 7097ad7abb38cd0c1279040a351302c4 |
| SHA1 | 56bbf827717169f500391390fcd3437c8e6b95bf |
| SHA256 | 867ca4a1a43d4b705777152c572ab2149c5f69d98f3fda0d9a8dbc3740a5d807 |
| SHA512 | d423980bc5a82c14a0cb455a67a1f4aded1b5d22cad58b7f66c39581965389f031f3c866a98fc0eac9d48ea09f7fc56a1556d516566a3a73d9464fc38269e97a |
C:\Users\Admin\AppData\Roaming\00200723.jar
| MD5 | 7097ad7abb38cd0c1279040a351302c4 |
| SHA1 | 56bbf827717169f500391390fcd3437c8e6b95bf |
| SHA256 | 867ca4a1a43d4b705777152c572ab2149c5f69d98f3fda0d9a8dbc3740a5d807 |
| SHA512 | d423980bc5a82c14a0cb455a67a1f4aded1b5d22cad58b7f66c39581965389f031f3c866a98fc0eac9d48ea09f7fc56a1556d516566a3a73d9464fc38269e97a |
memory/2960-76-0x0000000002130000-0x0000000005130000-memory.dmp
memory/2960-83-0x0000000000420000-0x0000000000421000-memory.dmp
memory/2960-84-0x0000000002130000-0x0000000005130000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-07-21 06:25
Reported
2023-07-21 06:27
Platform
win10v2004-20230703-en
Max time kernel
144s
Max time network
150s
Command Line
Signatures
STRRAT
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\00200723.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-1-5-21-1498570331-2313266200-788959944-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\00200723 = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\00200723.jar\"" | C:\ProgramData\Oracle\Java\javapath\java.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\00200723 = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\00200723.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 2812 wrote to memory of 2684 | N/A | C:\ProgramData\Oracle\Java\javapath\java.exe | C:\Windows\SYSTEM32\cmd.exe |
| PID 2812 wrote to memory of 2684 | N/A | C:\ProgramData\Oracle\Java\javapath\java.exe | C:\Windows\SYSTEM32\cmd.exe |
| PID 2812 wrote to memory of 840 | N/A | C:\ProgramData\Oracle\Java\javapath\java.exe | C:\Program Files\Java\jre1.8.0_66\bin\java.exe |
| PID 2812 wrote to memory of 840 | N/A | C:\ProgramData\Oracle\Java\javapath\java.exe | C:\Program Files\Java\jre1.8.0_66\bin\java.exe |
| PID 2684 wrote to memory of 4448 | N/A | C:\Windows\SYSTEM32\cmd.exe | C:\Windows\system32\schtasks.exe |
| PID 2684 wrote to memory of 4448 | 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\00200723.jar
C:\Windows\SYSTEM32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\00200723.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\00200723.jar"
C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\00200723.jar"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 2.136.104.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | efcc.duckdns.org | udp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| US | 8.8.8.8:53 | 8.3.197.209.in-addr.arpa | udp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| US | 8.8.8.8:53 | 200.74.101.95.in-addr.arpa | udp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| US | 8.8.8.8:53 | efcc.duckdns.org | udp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| US | 8.8.8.8:53 | 130.109.69.13.in-addr.arpa | udp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
| VN | 103.169.35.120:1243 | efcc.duckdns.org | tcp |
Files
memory/2812-138-0x0000000002780000-0x0000000003780000-memory.dmp
memory/2812-147-0x0000000000BE0000-0x0000000000BE1000-memory.dmp
memory/2812-154-0x0000000002780000-0x0000000003780000-memory.dmp
memory/2812-158-0x0000000002780000-0x0000000003780000-memory.dmp
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\00200723.jar
| MD5 | 7097ad7abb38cd0c1279040a351302c4 |
| SHA1 | 56bbf827717169f500391390fcd3437c8e6b95bf |
| SHA256 | 867ca4a1a43d4b705777152c572ab2149c5f69d98f3fda0d9a8dbc3740a5d807 |
| SHA512 | d423980bc5a82c14a0cb455a67a1f4aded1b5d22cad58b7f66c39581965389f031f3c866a98fc0eac9d48ea09f7fc56a1556d516566a3a73d9464fc38269e97a |
memory/2812-165-0x0000000002A00000-0x0000000002A10000-memory.dmp
memory/2812-167-0x0000000002780000-0x0000000003780000-memory.dmp
C:\Users\Admin\AppData\Roaming\00200723.jar
| MD5 | 7097ad7abb38cd0c1279040a351302c4 |
| SHA1 | 56bbf827717169f500391390fcd3437c8e6b95bf |
| SHA256 | 867ca4a1a43d4b705777152c572ab2149c5f69d98f3fda0d9a8dbc3740a5d807 |
| SHA512 | d423980bc5a82c14a0cb455a67a1f4aded1b5d22cad58b7f66c39581965389f031f3c866a98fc0eac9d48ea09f7fc56a1556d516566a3a73d9464fc38269e97a |
C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
| MD5 | 5fa4f8943380a83cb4a7c2ca749b617b |
| SHA1 | 9fbaae1653b05a2a076bb0010448d228a761b847 |
| SHA256 | 96d5d6c267ada43c1d15a7fc51c3553b5bbc2cb0d39cb0d37e573b229808037b |
| SHA512 | dbd1aa082379d6f87b686877960155b85192e900099057996e62961253f872aea02e57f4502145c442753a00f6f61a741f50d8dfd0455113161e8c8108063117 |
memory/840-178-0x0000000002520000-0x0000000003520000-memory.dmp
memory/840-180-0x0000000000820000-0x0000000000821000-memory.dmp
memory/840-185-0x0000000002520000-0x0000000003520000-memory.dmp
memory/840-186-0x0000000002520000-0x0000000003520000-memory.dmp
memory/840-188-0x0000000002520000-0x0000000003520000-memory.dmp
memory/2812-190-0x0000000002780000-0x0000000003780000-memory.dmp
memory/840-191-0x0000000002520000-0x0000000003520000-memory.dmp
memory/840-192-0x0000000002520000-0x0000000003520000-memory.dmp
memory/840-193-0x0000000002520000-0x0000000003520000-memory.dmp
memory/840-194-0x0000000002520000-0x0000000003520000-memory.dmp
memory/840-197-0x0000000002520000-0x0000000003520000-memory.dmp
memory/840-198-0x0000000002520000-0x0000000003520000-memory.dmp