General
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Target
Ransomware-Samples
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Size
318KB
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Sample
240830-w19zgsygrk
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MD5
4d769fef0ba5e506272a7bb3d8af5bfd
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SHA1
a3c8707909f41971591bcee631f9b6c4e8d00409
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SHA256
ee6d8f24bcf3b55b57b9ecf1e3345a5d1b5fddcad9f343acf9fa5022d26a9c5f
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SHA512
426ff4366a019b0222748a0a41d2d8a851f11b56605dc6e4f6d589e38618bdcda3b1fc86c15435578088c66b9d08bda41158337a3c23a764366a05f7278a3d60
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SSDEEP
6144:s/oWF3uokeOvHS1d1+CNs8wbiWQA9AvZJT3CqbMrhryf65NRPaCieMjAkvCJv1V0:qoWF3uokeOvHS1d1+CNs8wbiWQA9AvZz
Static task
static1
Behavioral task
behavioral1
Sample
Ransomware-Samples
Resource
win7-20240705-en
Malware Config
Targets
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Target
Ransomware-Samples
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Size
318KB
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MD5
4d769fef0ba5e506272a7bb3d8af5bfd
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SHA1
a3c8707909f41971591bcee631f9b6c4e8d00409
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SHA256
ee6d8f24bcf3b55b57b9ecf1e3345a5d1b5fddcad9f343acf9fa5022d26a9c5f
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SHA512
426ff4366a019b0222748a0a41d2d8a851f11b56605dc6e4f6d589e38618bdcda3b1fc86c15435578088c66b9d08bda41158337a3c23a764366a05f7278a3d60
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SSDEEP
6144:s/oWF3uokeOvHS1d1+CNs8wbiWQA9AvZJT3CqbMrhryf65NRPaCieMjAkvCJv1V0:qoWF3uokeOvHS1d1+CNs8wbiWQA9AvZz
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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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Renames multiple (2015) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Legitimate hosting services abused for malware hosting/C2
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1