General
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Target
https://github.com/Da2dalus/The-MALWARE-Repo/blob/master/Trojan/Illerka.C.exe
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Sample
241210-y5qshsxlhv
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://github.com/Da2dalus/The-MALWARE-Repo/blob/master/Trojan/Illerka.C.exe
Resource
win10ltsc2021-20241023-en
Malware Config
Extracted
C:\Users\Admin\Downloads\@[email protected]
wannacry
13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94
Extracted
C:\Users\Admin\Downloads\msg\m_english.wnry
http://schemas.microsoft.com/office/word/2003/wordml}}\paperw12240\paperh15840\margl1501\margr1502\margt1701\margb1440\gutter0\ltrsect
Extracted
C:\Users\Admin\Downloads\r.wnry
wannacry
Targets
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Target
https://github.com/Da2dalus/The-MALWARE-Repo/blob/master/Trojan/Illerka.C.exe
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InfinityLock Ransomware
Also known as InfinityCrypt. Based on the open-source HiddenTear ransomware.
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Infinitylock family
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Modifies WinLogon for persistence
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Wannacry family
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Downloads MZ/PE file
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Drops file in Drivers directory
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Modifies RDP port number used by Windows
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Modifies Windows Firewall
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Sets service image path in registry
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Credentials from Password Stores: Windows Credential Manager
Suspicious access to Credentials History.
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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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Impair Defenses: Safe Mode Boot
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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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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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Boot or Logon Autostart Execution: Authentication Package
Suspicious Windows Authentication Registry Modification.
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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
4Authentication Package
1Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
2Component Object Model Hijacking
1Netsh Helper DLL
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
4Authentication Package
1Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
2Component Object Model Hijacking
1Netsh Helper DLL
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1File and Directory Permissions Modification
2Windows File and Directory Permissions Modification
1Hide Artifacts
1Hidden Files and Directories
1Impair Defenses
3Disable or Modify System Firewall
1Disable or Modify Tools
1Safe Mode Boot
1Indicator Removal
1File Deletion
1Modify Registry
9Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1Install Root Certificate
1Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1