Resubmissions
09-10-2023 22:49
231009-2rxwfsgh8z 1006-03-2021 22:20
210306-e542m4kcwn 1009-11-2020 19:51
201109-ldpapz7ekx 10Analysis
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max time kernel
150s -
max time network
124s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
06-03-2021 22:20
General
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Target
SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe
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Size
291KB
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MD5
5a5c745bf3e97fe2be01880132662f28
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SHA1
924af25d379fc88319bc55958db898dbf5054309
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SHA256
0ec947a4f30a6ad7d055c72f5d6c1ffe7a538349f41e8156e9aa5c7a8b0d7811
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SHA512
151e4a07e19350d677e049c57c971b64924150eec007e665843cb6142ec73fc06ae4145c64164d3f7f25a376a7536ac6d9b3c85180503549a0c86f09cc0ded10
Malware Config
Signatures
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Jigsaw Ransomware
Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
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Executes dropped EXE 1 IoCs
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Modifies extensions of user files 5 IoCs
Ransomware generally changes the extension on encrypted files.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
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Drops desktop.ini file(s) 2 IoCs
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Drops file in Program Files directory 64 IoCs
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Drops file in Windows directory 3 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs
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Suspicious use of AdjustPrivilegeToken 5 IoCs
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Suspicious use of FindShellTrayWindow 64 IoCs
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Suspicious use of SendNotifyMessage 64 IoCs
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Suspicious use of WriteProcessMemory 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe"1⤵
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe"C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.dc.28918.exe2⤵
- Executes dropped EXE
- Modifies extensions of user files
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Drpbx\drpbx.exeMD5
5a5c745bf3e97fe2be01880132662f28
SHA1924af25d379fc88319bc55958db898dbf5054309
SHA2560ec947a4f30a6ad7d055c72f5d6c1ffe7a538349f41e8156e9aa5c7a8b0d7811
SHA512151e4a07e19350d677e049c57c971b64924150eec007e665843cb6142ec73fc06ae4145c64164d3f7f25a376a7536ac6d9b3c85180503549a0c86f09cc0ded10
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C:\Users\Admin\AppData\Local\Drpbx\drpbx.exeMD5
5a5c745bf3e97fe2be01880132662f28
SHA1924af25d379fc88319bc55958db898dbf5054309
SHA2560ec947a4f30a6ad7d055c72f5d6c1ffe7a538349f41e8156e9aa5c7a8b0d7811
SHA512151e4a07e19350d677e049c57c971b64924150eec007e665843cb6142ec73fc06ae4145c64164d3f7f25a376a7536ac6d9b3c85180503549a0c86f09cc0ded10
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C:\Users\Admin\AppData\Roaming\Frfx\firefox.exeMD5
5a5c745bf3e97fe2be01880132662f28
SHA1924af25d379fc88319bc55958db898dbf5054309
SHA2560ec947a4f30a6ad7d055c72f5d6c1ffe7a538349f41e8156e9aa5c7a8b0d7811
SHA512151e4a07e19350d677e049c57c971b64924150eec007e665843cb6142ec73fc06ae4145c64164d3f7f25a376a7536ac6d9b3c85180503549a0c86f09cc0ded10
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memory/808-14-0x0000000002420000-0x0000000002421000-memory.dmpFilesize
4KB
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memory/808-16-0x0000000002422000-0x0000000002424000-memory.dmpFilesize
8KB
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memory/808-21-0x000000000242C000-0x000000000242F000-memory.dmpFilesize
12KB
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memory/808-8-0x0000000000000000-mapping.dmp
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memory/808-19-0x0000000002429000-0x000000000242A000-memory.dmpFilesize
4KB
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memory/808-18-0x0000000004EF0000-0x0000000004EF1000-memory.dmpFilesize
4KB
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memory/808-11-0x0000000002240000-0x0000000002241000-memory.dmpFilesize
4KB
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memory/808-12-0x0000000002240000-0x0000000002241000-memory.dmpFilesize
4KB
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memory/808-15-0x0000000002421000-0x0000000002422000-memory.dmpFilesize
4KB
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memory/808-17-0x0000000002427000-0x0000000002429000-memory.dmpFilesize
8KB
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memory/1456-5-0x00000000021F2000-0x00000000021F4000-memory.dmpFilesize
8KB
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memory/1456-2-0x0000000002360000-0x0000000002361000-memory.dmpFilesize
4KB
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memory/1456-4-0x00000000021F1000-0x00000000021F2000-memory.dmpFilesize
4KB
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memory/1456-6-0x00000000021F7000-0x00000000021F9000-memory.dmpFilesize
8KB
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memory/1456-3-0x00000000021F0000-0x00000000021F1000-memory.dmpFilesize
4KB
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memory/1456-7-0x0000000005160000-0x0000000005161000-memory.dmpFilesize
4KB