General
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Target
JaffaCakes118_b9c1a84350d1c4881dd1eac4ffb453b0
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Size
1016KB
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Sample
250415-n4j88stlv7
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MD5
b9c1a84350d1c4881dd1eac4ffb453b0
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SHA1
e2c094bbe105e9ced9c996c140f4fb1ae5f48585
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SHA256
19bfc62f4162a8399e6c22f14721710d96007e027aaa8154e3d80bb725c360e4
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SHA512
4122450a3b2fb3698229b12cac896378eee63798ca6c928addfd1a5fdd4af87001c55b19a3072e643bc8586a596f4af6f1b1920c15aa63404212636329da192c
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SSDEEP
6144:KIXsL0tvrSVz1DnemeYbpsnEf78AoXh6KkiD0OofzA+/VygHU:KIXsgtvm1De5YlOx6lzBH46U
Static task
static1
Behavioral task
behavioral1
Sample
JaffaCakes118_b9c1a84350d1c4881dd1eac4ffb453b0.exe
Resource
win10v2004-20250410-en
Behavioral task
behavioral2
Sample
JaffaCakes118_b9c1a84350d1c4881dd1eac4ffb453b0.exe
Resource
win11-20250410-en
Malware Config
Targets
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Target
JaffaCakes118_b9c1a84350d1c4881dd1eac4ffb453b0
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Size
1016KB
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MD5
b9c1a84350d1c4881dd1eac4ffb453b0
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SHA1
e2c094bbe105e9ced9c996c140f4fb1ae5f48585
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SHA256
19bfc62f4162a8399e6c22f14721710d96007e027aaa8154e3d80bb725c360e4
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SHA512
4122450a3b2fb3698229b12cac896378eee63798ca6c928addfd1a5fdd4af87001c55b19a3072e643bc8586a596f4af6f1b1920c15aa63404212636329da192c
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SSDEEP
6144:KIXsL0tvrSVz1DnemeYbpsnEf78AoXh6KkiD0OofzA+/VygHU:KIXsgtvm1De5YlOx6lzBH46U
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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