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General
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Target
a54ef676ed88e1b7a5c61f7cb652ef0bfd59cff076e7c45e535c19f742a3216cN.exe
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Size
767KB
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Sample
250224-r32nnsxqy4
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MD5
cace46a66add9416a9657af4819556f0
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SHA1
c847bd2a4657be55ce0ff7069ae8e16d5878f09e
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SHA256
a54ef676ed88e1b7a5c61f7cb652ef0bfd59cff076e7c45e535c19f742a3216c
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SHA512
e985c7dad6614e7d54a6f4b1a8ceb5882908abdbda2f189ed3e7894575f4207c702a1d3fc8defdc31b3fd264a31630a5027f530b59f35c85ae783f593eef6b7b
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SSDEEP
12288:7GqN/XdctpVtkMtsyDqBQ0tA3nyF0Fh0zJmViYV5yvQX05oWI:lNcBtkUqBQ0tknx5yIXgoWI
Static task
static1
Behavioral task
behavioral1
Sample
a54ef676ed88e1b7a5c61f7cb652ef0bfd59cff076e7c45e535c19f742a3216cN.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
a54ef676ed88e1b7a5c61f7cb652ef0bfd59cff076e7c45e535c19f742a3216cN.exe
Resource
win10v2004-20250217-en
Malware Config
Targets
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Target
a54ef676ed88e1b7a5c61f7cb652ef0bfd59cff076e7c45e535c19f742a3216cN.exe
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Size
767KB
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MD5
cace46a66add9416a9657af4819556f0
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SHA1
c847bd2a4657be55ce0ff7069ae8e16d5878f09e
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SHA256
a54ef676ed88e1b7a5c61f7cb652ef0bfd59cff076e7c45e535c19f742a3216c
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SHA512
e985c7dad6614e7d54a6f4b1a8ceb5882908abdbda2f189ed3e7894575f4207c702a1d3fc8defdc31b3fd264a31630a5027f530b59f35c85ae783f593eef6b7b
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SSDEEP
12288:7GqN/XdctpVtkMtsyDqBQ0tA3nyF0Fh0zJmViYV5yvQX05oWI:lNcBtkUqBQ0tknx5yIXgoWI
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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 (2006) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Disables Task Manager via registry modification
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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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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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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Sets desktop wallpaper using registry
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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
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1