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Analysis
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max time kernel
211s -
max time network
199s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
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submitted
21/03/2025, 02:52
General
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Target
jigsaw.exe
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Size
283KB
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MD5
2773e3dc59472296cb0024ba7715a64e
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SHA1
27d99fbca067f478bb91cdbcb92f13a828b00859
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SHA256
3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
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SHA512
6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262
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SSDEEP
6144:7fukPLPvucHiQQQ4uuy9ApZbZWxcZt+kTfMLJTOAZiYSXjjeqXus:7fu5cCT7yYlWi8kTfMLJTOAZiYSXjyqX
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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Jigsaw family
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Renames multiple (1998) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Executes dropped EXE 1 IoCs
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Reads user/profile data of web browsers 3 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 file in Program Files directory 64 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 12 IoCs
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Suspicious behavior: AddClipboardFormatListener 1 IoCs
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Suspicious behavior: GetForegroundWindowSpam 2 IoCs
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Suspicious use of AdjustPrivilegeToken 4 IoCs
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Suspicious use of FindShellTrayWindow 14 IoCs
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Suspicious use of SendNotifyMessage 9 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
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Suspicious use of WriteProcessMemory 6 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"1⤵
- Adds Run key to start application
- 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\jigsaw.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of FindShellTrayWindow
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C:\Program Files\VideoLAN\VLC\vlc.exe"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\WriteUnprotect.mp2"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"1⤵
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x7c1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Program Files\7-Zip\License.txt.fun1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\7-Zip\License.txt.fun2⤵
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3KB
MD57d89b4741a8919b08dba9949d7410c05
SHA1ad20472937965e41f82d46aef8f6ae6aba1f24d2
SHA2568a9fa428bb1e55657257d17f9e61f8314e10b4e2b880eed5b8640eab3a04d793
SHA512e3542c05aa317f4004204c75ed4850bee49463b00cd065d1345c302f6eda6dd516f676e9aae7428643c8d925447d3e4e505f6fcc2fb4fb70426752406e2d534b
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Filesize
160B
MD5580ee0344b7da2786da6a433a1e84893
SHA160f8c4dd5457e9834f5402cb326b1a2d3ca0ba7e
SHA25698b6c2ddfefc628d03ceaef9d69688674a6bc32eb707f9ed86bc8c75675c4513
SHA512356d2cdea3321e894b5b46ad1ea24c0e3c8be8e3c454b5bd300b7340cbb454e71fc89ca09ea0785b373b483e67c2f6f6bb408e489b0de4ff82d5ed69a75613ba
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Filesize
283KB
MD52773e3dc59472296cb0024ba7715a64e
SHA127d99fbca067f478bb91cdbcb92f13a828b00859
SHA2563ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
SHA5126ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262
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Filesize
16B
MD58ebcc5ca5ac09a09376801ecdd6f3792
SHA181187142b138e0245d5d0bc511f7c46c30df3e14
SHA256619e246fc0ac11320ff9e322a979948d949494b0c18217f4d794e1b398818880
SHA512cec50bfc6ad2f57f16da99459f40f2d424c6d5691685fa1053284f46c8c8c8a975d7bcb1f3521c4f3fbdc310cf4714e29404aa23be6021e2e267c97b090dc650
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Filesize
224KB
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Filesize
9.6MB
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Filesize
9.6MB
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Filesize
9.6MB
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Filesize
4KB
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Filesize
92KB
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Filesize
96KB
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Filesize
316KB
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Filesize
2.3MB
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Filesize
608KB
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Filesize
208KB
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Filesize
992KB
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Filesize
68KB
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Filesize
100KB
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Filesize
136KB
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Filesize
172KB
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Filesize
2.7MB
-
Filesize
80KB
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Filesize
68KB
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Filesize
840KB
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Filesize
3.6MB
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Filesize
928KB
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Filesize
2.6MB
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Filesize
908KB
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Filesize
260KB
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Filesize
188KB
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Filesize
2.0MB
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Filesize
152KB
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Filesize
68KB
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Filesize
68KB
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Filesize
104KB
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Filesize
180KB
-
Filesize
108KB
-
Filesize
68KB
-
Filesize
72KB
-
Filesize
892KB
-
Filesize
684KB
-
Filesize
68KB
-
Filesize
148KB
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Filesize
9.6MB
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Filesize
9.6MB
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Filesize
9.6MB
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Filesize
9.6MB
-
Filesize
9.6MB
-
Filesize
9.6MB
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Filesize
9.6MB
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Filesize
9.6MB
