General
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Target
2BuVfqNL_400x400.jpg
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Size
4KB
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Sample
240810-1cdnlayfrr
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MD5
1308240a66224bde83dd2ea8a22828d4
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SHA1
b66ad9628e14fe2e099e4aac6851f1316f46ec58
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SHA256
67f9972005be1107407d1875f09086e779bc526a91ed18f95936eed046e600bb
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SHA512
232e534c82a021498b8f28a601eb3b8d5c7d169b796b95fedacf49ede9d5d18972989881d563c2b14c1aedcf9e6fbe5aa7e36a57e12183e4c9ac5d4d13610f88
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SSDEEP
96:b894vJh7WQiQaxFtFzoiJx5bL+nqYeuEnHs4L:IkizNLFzoY9zsO
Static task
static1
Behavioral task
behavioral1
Sample
2BuVfqNL_400x400.jpg
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
2BuVfqNL_400x400.jpg
Resource
win10v2004-20240802-en
Behavioral task
behavioral3
Sample
2BuVfqNL_400x400.jpg
Resource
win11-20240802-en
Malware Config
Extracted
C:\Users\Admin\Desktop\@[email protected]
wannacry
12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw
Targets
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Target
2BuVfqNL_400x400.jpg
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Size
4KB
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MD5
1308240a66224bde83dd2ea8a22828d4
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SHA1
b66ad9628e14fe2e099e4aac6851f1316f46ec58
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SHA256
67f9972005be1107407d1875f09086e779bc526a91ed18f95936eed046e600bb
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SHA512
232e534c82a021498b8f28a601eb3b8d5c7d169b796b95fedacf49ede9d5d18972989881d563c2b14c1aedcf9e6fbe5aa7e36a57e12183e4c9ac5d4d13610f88
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SSDEEP
96:b894vJh7WQiQaxFtFzoiJx5bL+nqYeuEnHs4L:IkizNLFzoY9zsO
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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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Suspicious use of NtCreateProcessExOtherParentProcess
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (3303) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Downloads MZ/PE file
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Drops file in Drivers directory
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Event Triggered Execution: Image File Execution Options Injection
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Deletes itself
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Drops startup file
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Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
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Executes dropped EXE
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Loads dropped DLL
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Modifies file permissions
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops desktop.ini file(s)
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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File and Directory Permissions Modification: Windows File and Directory Permissions Modification
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Indicator Removal: File Deletion
Adversaries may delete files left behind by the actions of their intrusion activity.
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Legitimate hosting services abused for malware hosting/C2
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Checks system information in the registry
System information is often read in order to detect sandboxing environments.
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Drops file in System32 directory
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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
1Event Triggered Execution
2Component Object Model Hijacking
1Image File Execution Options Injection
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
2Component Object Model Hijacking
1Image File Execution Options Injection
1Defense Evasion
Direct Volume Access
1File and Directory Permissions Modification
2Windows File and Directory Permissions Modification
1Hide Artifacts
1Hidden Files and Directories
1Indicator Removal
4Clear Persistence
1File Deletion
3Modify Registry
4