General
- Target RatDecoder.exe
- Size 10.3MB
- Sample261027-xjnwcsft21
- SHA256 a36dfd921c39526058143f74fc1ac216baefe20b260a975c6e24b9f12fca355c
- MD5 fd0660bfb71d99cfd80dcd5fec50deeb
- SHA1 123462a65c4c0db2a25614e9195499dd7033c9fc
- SHA512 cca54ab03befc9f46cd8f57fdbfce796190a46a425950e5401bd3b562a198a9e79cba626fc5910ced2e534d23b087a1275243046e2f53b06441b69c6b640baea
- SSDEEP 196608:qAfCdFhS/zGFqrn/6KVmp85j+HCPtWB3yv7Ws/hSYyARUwV40E0WW:qAfCjhS/6FKC3p85j+4WyzWs5SBGtV4R
- TLSH T117B6337F0B9C86E6E5A28138DA6E09D546EFB0C37F2C5DC50F61E8EC6A76D4D1680123
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
RatDecoder.exe
Resource
win10v2004-20260911-en
Malware Config
Targets
-
- Target RatDecoder.exe
- Size 10.3MB
- SHA256 a36dfd921c39526058143f74fc1ac216baefe20b260a975c6e24b9f12fca355c
- MD5 fd0660bfb71d99cfd80dcd5fec50deeb
- SHA1 123462a65c4c0db2a25614e9195499dd7033c9fc
- SHA512 cca54ab03befc9f46cd8f57fdbfce796190a46a425950e5401bd3b562a198a9e79cba626fc5910ced2e534d23b087a1275243046e2f53b06441b69c6b640baea
- SSDEEP 196608:qAfCdFhS/zGFqrn/6KVmp85j+HCPtWB3yv7Ws/hSYyARUwV40E0WW:qAfCjhS/6FKC3p85j+4WyzWs5SBGtV4R
- TLSH T117B6337F0B9C86E6E5A28138DA6E09D546EFB0C37F2C5DC50F61E8EC6A76D4D1680123
- MD5 SHA1 SHA512 SSDEEP TLSH
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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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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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Checks whether UAC is enabled
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Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
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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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Obfuscated Files or Information: Command Obfuscation
Adversaries may obfuscate content during command execution to impede detection.
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Suspicious use of NtSetInformationThreadHideFromDebugger
MITRE ATT&CK Enterprise v16
Defense Evasion
Debugger Evasion
1Obfuscated Files or Information
1Command Obfuscation
1Virtualization/Sandbox Evasion
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Discovery
Browser Information Discovery
1Debugger Evasion
1Query Registry
5System Information Discovery
6System Location Discovery
1System Language Discovery
1System Network Configuration Discovery
3Internet Connection Discovery
1Wi-Fi Discovery
1Virtualization/Sandbox Evasion
1