Analysis Overview
SHA256
053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa
Threat Level: Known bad
The file Jigsaw2-b.exe was found to be: Known bad.
Malicious Activity Summary
Jigsaw Ransomware
Checks computer location settings
Executes dropped EXE
UPX packed file
Adds Run key to start application
Drops desktop.ini file(s)
Drops file in Windows directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-09-27 16:49
Signatures
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-09-27 16:49
Reported
2023-09-27 16:50
Platform
win10v2004-20230915-en
Max time kernel
29s
Max time network
33s
Command Line
Signatures
Jigsaw Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe" | C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe | N/A |
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\assembly | C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe | N/A |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 860 wrote to memory of 4704 | N/A | C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe |
| PID 860 wrote to memory of 4704 | N/A | C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe |
| PID 860 wrote to memory of 4704 | N/A | C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe | C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe
"C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe"
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
"C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 203.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 54.120.234.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
Files
memory/860-0-0x0000000000400000-0x0000000000454000-memory.dmp
memory/860-1-0x0000000074D60000-0x0000000075311000-memory.dmp
memory/860-2-0x0000000074D60000-0x0000000075311000-memory.dmp
memory/860-3-0x0000000000660000-0x0000000000670000-memory.dmp
memory/860-4-0x0000000000660000-0x0000000000670000-memory.dmp
memory/860-7-0x0000000000660000-0x0000000000670000-memory.dmp
memory/860-8-0x0000000000400000-0x0000000000454000-memory.dmp
memory/860-9-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-10-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-12-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-14-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-16-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-18-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-20-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-22-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-24-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-26-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-28-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-30-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-32-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-34-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-36-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-38-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-40-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-42-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-44-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-46-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-48-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-50-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-52-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-54-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-56-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-58-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-60-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-62-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-64-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-66-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-68-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-70-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-72-0x0000000005180000-0x00000000051B4000-memory.dmp
memory/860-167-0x0000000005240000-0x0000000005241000-memory.dmp
memory/860-171-0x0000000074D60000-0x0000000075311000-memory.dmp
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
| MD5 | 33862bca1fe73d44277e9ad4f0aa81e1 |
| SHA1 | e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1 |
| SHA256 | 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa |
| SHA512 | 08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c |
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
| MD5 | 33862bca1fe73d44277e9ad4f0aa81e1 |
| SHA1 | e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1 |
| SHA256 | 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa |
| SHA512 | 08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c |
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
| MD5 | 33862bca1fe73d44277e9ad4f0aa81e1 |
| SHA1 | e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1 |
| SHA256 | 053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa |
| SHA512 | 08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c |
memory/860-183-0x0000000074D60000-0x0000000075311000-memory.dmp
memory/4704-184-0x0000000000400000-0x0000000000454000-memory.dmp
memory/860-186-0x0000000000400000-0x0000000000454000-memory.dmp
memory/4704-187-0x0000000074D60000-0x0000000075311000-memory.dmp
memory/860-191-0x0000000074D60000-0x0000000075311000-memory.dmp
memory/4704-189-0x0000000002030000-0x0000000002040000-memory.dmp
memory/4704-193-0x0000000002030000-0x0000000002040000-memory.dmp
memory/4704-196-0x0000000074D60000-0x0000000075311000-memory.dmp
memory/4704-350-0x0000000004F70000-0x0000000004F71000-memory.dmp
memory/4704-351-0x0000000002030000-0x0000000002040000-memory.dmp
memory/4704-352-0x0000000074D60000-0x0000000075311000-memory.dmp
memory/4704-353-0x0000000002030000-0x0000000002040000-memory.dmp
memory/4704-354-0x0000000002030000-0x0000000002040000-memory.dmp
memory/4704-356-0x0000000074D60000-0x0000000075311000-memory.dmp