General
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Target
Wave.rar
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Size
5.8MB
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Sample
240704-xftx7stanj
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MD5
f8f3ea18a2670f9c314ebcfc4c6b644f
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SHA1
9abcee5e18e138743fb73ad16445b4df128bd046
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SHA256
cf4abf0a76c5310d2c85a7ae11942ea8679c5e35d3f9d09e28db638428efc2b5
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SHA512
2545bc9f34dbfc5894d7dc5477a86292089de3ba9d5eb80ef4aed312ebad351fd4fb2aa050b6f2c4332e4d71c68243c3f77cb80f0a53a1ef8ab2583166de4eba
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SSDEEP
98304:IcAr1vsy4g3uEwL13D0vBisoR6xwv8kApilwY0tWDWGlLkr8Kf0RHSBdJz:IcArtsu3uEwp3jsBmApil10t+WIkoKfF
Malware Config
Extracted
gurcu
https://api.telegram.org/bot7121631902:AAErn17xNWrdiucOEwhQIj8v6o5tvdffJT4/sendPhoto?chat_id=7391062786&caption=%E2%9D%95%20User%20connected%20%E2%9D%95%0A%E2%80%A2%20ID%3A%20cb2f7d9fb5d7fafd213be9f3e866f8347763b7f5%0A%E2%80%A2%20Comment%3A%20proliv%0A%0A%E2%80%A2%20User%20Name%3A%20Admin%0A%E2%80%A2%20PC%20Name%3A%20WQMJVIBL%0A%E2%80%A2%20OS%20Info%3A%20Windows%2010%20Pro%0A%0A%E2%80%A2%20IP%3A%20194.110.13.70%0A%E2%80%A2%20GEO%3A%20GB%20%2F%20London%0A%0A%E2%80%A2%20Working%20Directory%3A%20C%3A%5CmswebFonthost%5Cbrowserwinsvc.ex
https://api.telegram.org/bot7121631902:AAErn17xNWrdiucOEwhQIj8v6o5tvdffJT4/sendDocument?chat_id=7391062786&caption=%F0%9F%93%8E%20Log%20collected%20%F0%9F%93%8E%0A%E2%80%A2%20ID%3A%20cb2f7d9fb5d7fafd213be9f3e866f8347763b7f5%0A%0A%E2%80%A2%20Scanned%20Directories%3A%200%0A%E2%80%A2%20Elapsed%20Time%3A%2000%3A00%3A28.908646
https://api.telegram.org/bot7121631902:AAErn17xNWrdiucOEwhQIj8v6o5tvdffJT4/sendDocument?chat_id=7391062786&caption=%F0%9F%93%8E%20Log%20collected%20%F0%9F%93%8E%0A%E2%80%A2%20ID%3A%20cb2f7d9fb5d7fafd213be9f3e866f8347763b7f5%0A%0A%E2%80%A2%20Scanned%20Directories%3A%200%0A%E2%80%A2%20Elapsed%20Time%3A%2000%3A00%3A08.533138
Targets
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Target
Wave.exe
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Size
8.7MB
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MD5
658cf2d0529f97f6f04bb78b151dc207
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SHA1
4af0fb55a3343f885f43af09bd11f235dcfded2d
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SHA256
85edeebdb49bff8eede6ecc42928d9b0f6d120b0e4a3a88fe59c9b7cb62b2cac
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SHA512
d2361c08291037d177cbe8b546cb65fbfc5361fe676114919edc69bbecc90b31dd37ef9ef41ceab00b560ee26e264eaa702eeb32bb9ff5659767a2c41b9a7dce
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SSDEEP
196608:WCpTIWsrEhW5hcePglVrOUv5JpkMZxShCZxD43eQpMqX:Wg89rEShcWgldrjwcZxD4OQeqX
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Modifies WinLogon for persistence
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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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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Downloads MZ/PE file
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.NET Reactor proctector
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
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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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Accesses cryptocurrency files/wallets, possible credential harvesting
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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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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 file in System32 directory
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Suspicious use of NtSetInformationThreadHideFromDebugger
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1