Resubmissions
09/10/2023, 22:49
231009-2ry4hsba261006/03/2021, 22:23
210306-pfhc83235s1005/06/2020, 02:52
200605-jqylqtyzss10Analysis
- max time kernel
155s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20230915-en - resource tags
- submitted
09/10/2023, 22:49
General
- Target drpbx.exe
- Size 125KB
- Sample231009-2ry4hsba26
- SHA256 6f94e5747ba1aaa2bb666704ee65b37aac8aff47dbc321be2b607d47dd695e8f
Malware Config
Signatures
- Jigsaw Ransomware
Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Drops desktop.ini file(s) 2 IoCs
- Drops file in Windows directory 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\drpbx.exe"C:\Users\Admin\AppData\Local\Temp\drpbx.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe"C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\drpbx.exe2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
drpbx.exe
drpbx.exe
drpbx.exe
drpbx.exe.log
memory/1476-6-0x000000001BBA0000-0x000000001C06E000-memory.dmp
memory/1476-7-0x000000001C070000-0x000000001C10C000-memory.dmp
memory/1476-0-0x00007FFF68FC0000-0x00007FFF69961000-memory.dmp
memory/1476-3-0x0000000000E40000-0x0000000000E54000-memory.dmp
memory/1476-2-0x0000000000E70000-0x0000000000E80000-memory.dmp
memory/1476-1-0x00007FFF68FC0000-0x00007FFF69961000-memory.dmp
memory/1476-23-0x00007FFF68FC0000-0x00007FFF69961000-memory.dmp
memory/1628-24-0x00007FFF68FC0000-0x00007FFF69961000-memory.dmp
memory/1628-22-0x0000000000920000-0x0000000000934000-memory.dmp
memory/1628-25-0x0000000000690000-0x00000000006A0000-memory.dmp
memory/1628-26-0x00007FFF68FC0000-0x00007FFF69961000-memory.dmp
memory/1628-27-0x00007FFF68FC0000-0x00007FFF69961000-memory.dmp
memory/1628-28-0x0000000000690000-0x00000000006A0000-memory.dmp