Analysis
- max time kernel
90s - max time network
203s - platform
windows11-21h2_x64 - resource
win11-20240802-en - resource tags
- submitted
29/09/2024, 15:49
General
- Target #Uc800#Uc791#Uad8c #Uce68#Ud574#Uc5d0 #Ub300#Ud55c #Uc99d#Uac70 #Ubc0f #Uc790#Ub8cc - #Uc2a4#Ud0c0#U.exe
- Size 6.1MB
- Sample240929-s9c5bstdmh
- SHA256 08c7fb6067acc8ac207d28ab616c9ea5bc0d394956455d6a3eecb73f8010f7a2
Malware Config
Extracted
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vidar
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11
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da1105e7cee8ade4acd1a4dc0b47dbbe
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https://steamcommunity.com/profiles/76561199780418869
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https://t.me/ae5ed
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0
Signatures
- Detect Vidar Stealer 18 IoCs
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Loads dropped DLL 2 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\#Uc800#Uc791#Uad8c #Uce68#Ud574#Uc5d0 #Ub300#Ud55c #Uc99d#Uac70 #Ubc0f #Uc790#Ub8cc - #Uc2a4#Ud0c0#U.exe"C:\Users\Admin\AppData\Local\Temp\#Uc800#Uc791#Uad8c #Uce68#Ud574#Uc5d0 #Ub300#Ud55c #Uc99d#Uac70 #Ubc0f #Uc790#Ub8cc - #Uc2a4#Ud0c0#U.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\#Uc800#Uc791#Uad8c #Uce68#Ud574#Uc5d0 #Ub300#Ud55c #Uc99d#Uac70 #Ubc0f #Uc790#Ub8cc - #Uc2a4#Ud0c0#U.exe"C:\Users\Admin\AppData\Local\Temp\#Uc800#Uc791#Uad8c #Uce68#Ud574#Uc5d0 #Ub300#Ud55c #Uc99d#Uac70 #Ubc0f #Uc790#Ub8cc - #Uc2a4#Ud0c0#U.exe"2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\DHCAECGIEBKJ" & exit3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
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C:\Windows\SysWOW64\cmd.execmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*UpdaterCisco" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\CiscoUpdater000_PARTIAL.dll",EntryPoint /f & exit2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exereg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*UpdaterCisco" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\CiscoUpdater000_PARTIAL.dll",EntryPoint /f3⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
4Credentials In Files
4Replay Monitor
Loading Replay Monitor...
Downloads
mozglue.dll
nss3.dll
memory/2664-6-0x0000000010000000-0x0000000010419000-memory.dmp
memory/2664-0-0x0000000010000000-0x0000000010419000-memory.dmp
memory/2664-4-0x0000000010000000-0x0000000010419000-memory.dmp
memory/2664-15-0x0000000010000000-0x0000000010419000-memory.dmp
memory/2664-9-0x0000000010000000-0x0000000010419000-memory.dmp
memory/2664-1-0x000000001013C000-0x000000001015A000-memory.dmp
memory/2664-5-0x0000000010000000-0x0000000010419000-memory.dmp
memory/2664-3-0x0000000010000000-0x0000000010419000-memory.dmp
memory/2664-17-0x0000000010396000-0x000000001039D000-memory.dmp
memory/2664-26-0x000000001013C000-0x000000001015A000-memory.dmp
memory/2716-44-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-62-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-12-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-88-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-7-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-45-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-27-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-61-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-28-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-16-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-84-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-85-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-29-0x00000000201B0000-0x000000002040F000-memory.dmp
memory/2716-93-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-94-0x0000000000A30000-0x0000000000CA6000-memory.dmp
memory/2716-95-0x0000000000A30000-0x0000000000CA6000-memory.dmp