General
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Target
JaffaCakes118_a5e2da6e1c01ed5a77388fe8e3cffccd
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Size
560KB
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Sample
250409-vbqnwaxsfs
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MD5
a5e2da6e1c01ed5a77388fe8e3cffccd
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SHA1
42af81c936c87dd649c92ca0766269b02639ed23
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SHA256
91c53cbeec6bc93467588bd0657b4f5d1bb0658c5c89bc28ad599c8931db80b4
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SHA512
a6e8d394ff59e43636e07503053670084d98bcc4973f8570e965d5fbf6097dd0c3d4e9778b8831fae7bc1dd1709ebf526e1b7c4248b1ed3404ec6926544c7137
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SSDEEP
12288:jPYBX/tQDwmHtOwu/ctCKaCDnEQvPg5I2R3qV:jPY2w+tOwuMCeEOPp83
Static task
static1
Behavioral task
behavioral1
Sample
JaffaCakes118_a5e2da6e1c01ed5a77388fe8e3cffccd.exe
Resource
win10v2004-20250313-en
Malware Config
Targets
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Target
JaffaCakes118_a5e2da6e1c01ed5a77388fe8e3cffccd
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Size
560KB
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MD5
a5e2da6e1c01ed5a77388fe8e3cffccd
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SHA1
42af81c936c87dd649c92ca0766269b02639ed23
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SHA256
91c53cbeec6bc93467588bd0657b4f5d1bb0658c5c89bc28ad599c8931db80b4
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SHA512
a6e8d394ff59e43636e07503053670084d98bcc4973f8570e965d5fbf6097dd0c3d4e9778b8831fae7bc1dd1709ebf526e1b7c4248b1ed3404ec6926544c7137
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SSDEEP
12288:jPYBX/tQDwmHtOwu/ctCKaCDnEQvPg5I2R3qV:jPY2w+tOwuMCeEOPp83
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Modifies WinLogon for persistence
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Pykspa family
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UAC bypass
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Detect Pykspa worm
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Adds policy Run key to start application
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Disables RegEdit 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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Impair Defenses: Safe Mode Boot
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Adds Run key to start application
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Checks whether UAC is enabled
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Hijack Execution Flow: Executable Installer File Permissions Weakness
Possible Turn off User Account Control's privilege elevation for standard users.
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Drops autorun.inf file
Malware can abuse Windows Autorun to spread further via attached volumes.
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Hijack Execution Flow
1Executable Installer File Permissions Weakness
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Hijack Execution Flow
1Executable Installer File Permissions Weakness
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Hijack Execution Flow
1Executable Installer File Permissions Weakness
1Impair Defenses
2Disable or Modify Tools
1Safe Mode Boot
1Modify Registry
5