General
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Target
RNSM00310.7z
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Size
7.1MB
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Sample
241112-ytvbkatkcm
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MD5
c4343de80cf5b87860583ce70b74366b
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SHA1
26c27c01db7260325fb02d5f1247d1ac8e200e45
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SHA256
a30d59af60ec2211948064f267544b37edddad284ce86c64120fb6ae545285cf
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SHA512
9564f0820f845a3ff578f362ae50909b4f87ea0c141b65c95727068361b29f851c4a218b2eb477df19d9d8d998dc44c2756e243d206ddc5490074986a563f9b0
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SSDEEP
98304:uxi0fsp+sGzfyfoEdRKcAhCwN2HiN8/2dmAk1NSkGCFYLwKNtjNWemY/Go0TZLl9:uTf4KBhCLuqMmAkBkNMv/oKd9z5
Static task
static1
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\[HOW_TO_DECRYPT_FILES].html
Extracted
C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\[HOW_TO_DECRYPT_FILES].html
Targets
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Target
RNSM00310.7z
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Size
7.1MB
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MD5
c4343de80cf5b87860583ce70b74366b
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SHA1
26c27c01db7260325fb02d5f1247d1ac8e200e45
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SHA256
a30d59af60ec2211948064f267544b37edddad284ce86c64120fb6ae545285cf
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SHA512
9564f0820f845a3ff578f362ae50909b4f87ea0c141b65c95727068361b29f851c4a218b2eb477df19d9d8d998dc44c2756e243d206ddc5490074986a563f9b0
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SSDEEP
98304:uxi0fsp+sGzfyfoEdRKcAhCwN2HiN8/2dmAk1NSkGCFYLwKNtjNWemY/Go0TZLl9:uTf4KBhCLuqMmAkBkNMv/oKd9z5
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Betabot family
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Gozi family
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Modifies firewall policy service
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Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
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Trickbot family
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Trickbot x86 loader
Detected Trickbot's x86 loader that unpacks the x86 payload.
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Wannacry family
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Contacts a large (2258) amount of remote hosts
This may indicate a network scan to discover remotely running services.
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit
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Event Triggered Execution: Image File Execution Options Injection
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Looks for VMWare Tools registry key
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Looks for VMWare services registry key.
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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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Executes dropped EXE
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Loads dropped DLL
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Unexpected DNS network traffic destination
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
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Adds Run key to start application
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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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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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Maps connected drives based on registry
Disk information is often read in order to detect sandboxing environments.
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AutoIT Executable
AutoIT scripts compiled to PE executables.
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Drops file in System32 directory
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Sets desktop wallpaper using registry
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Management Instrumentation
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Image File Execution Options Injection
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Image File Execution Options Injection
1Defense Evasion
Direct Volume Access
1Impair Defenses
2Disable or Modify System Firewall
1Disable or Modify Tools
1Indicator Removal
3Clear Persistence
1File Deletion
2Modify Registry
8Subvert Trust Controls
1Install Root Certificate
1Virtualization/Sandbox Evasion
2Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Discovery
Network Service Discovery
1Network Share Discovery
1Peripheral Device Discovery
2Query Registry
8Remote System Discovery
1System Information Discovery
10System Location Discovery
1System Language Discovery
1Virtualization/Sandbox Evasion
2