General
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Target
DeleteSteamAppCache.exe
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Size
105KB
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Sample
240814-c5x1yavflc
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MD5
89c28eed9c8492dc5f063bc9fc4c8974
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SHA1
7535673587fcdb5e9a807dfa7d9826f8cc920480
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SHA256
52333c97cd738e82cee05c431ad7fb06f4c00049d5a0f69b2040b6a2e99bc433
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SHA512
41eed44b29e28c9781e2e35c5f4bee0eb44ed06a941c9019289d69a7db2ad4bb7658ea7a1072041d42ace2f1033109699cae5a9202a7e00b67b9fe50161e7c5b
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SSDEEP
3072:E8e6qmsr9YaOqdY0SZF/gcfPHE3ocu7fa:7DsBLrY0SPRHHja
Static task
static1
Behavioral task
behavioral1
Sample
DeleteSteamAppCache.exe
Resource
win7-20240705-en
Malware Config
Targets
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Target
DeleteSteamAppCache.exe
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Size
105KB
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MD5
89c28eed9c8492dc5f063bc9fc4c8974
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SHA1
7535673587fcdb5e9a807dfa7d9826f8cc920480
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SHA256
52333c97cd738e82cee05c431ad7fb06f4c00049d5a0f69b2040b6a2e99bc433
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SHA512
41eed44b29e28c9781e2e35c5f4bee0eb44ed06a941c9019289d69a7db2ad4bb7658ea7a1072041d42ace2f1033109699cae5a9202a7e00b67b9fe50161e7c5b
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SSDEEP
3072:E8e6qmsr9YaOqdY0SZF/gcfPHE3ocu7fa:7DsBLrY0SPRHHja
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Credentials from Password Stores: Credentials from Web Browsers
Malicious Access or copy of Web Browser Credential store.
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Downloads MZ/PE file
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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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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Loads dropped DLL
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Modifies file permissions
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Adds Run key to start application
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Blocklisted process makes network request
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Checks for any installed AV software in registry
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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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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Browser Extensions
1Event Triggered Execution
1Component Object Model Hijacking
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Component Object Model Hijacking
1Defense Evasion
File and Directory Permissions Modification
1Modify Registry
4Subvert Trust Controls
2Install Root Certificate
1SIP and Trust Provider Hijacking
1Discovery
Browser Information Discovery
1Peripheral Device Discovery
1Query Registry
6Software Discovery
1Security Software Discovery
1System Information Discovery
5System Location Discovery
1System Language Discovery
1System Network Configuration Discovery
1Internet Connection Discovery
1System Time Discovery
1