Analysis
- max time kernel
125s - max time network
131s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
17/07/2023, 13:48
General
- Target ae4c66cd3c6db9a0d78b4b151e2ac1a2.exe
- Size 471KB
- Sample230717-q34mlacc69
- SHA256 2666bc8583d2fb41a96376ab46c4b96ddc676e4187ca510b977740a5fa8a4fe0
Malware Config
Extracted
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vidar
-
4.7
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https://t.me/eagl3z
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https://t.me/eagl3z
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https://steamcommunity.com/profiles/76561199159550234
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profile_id_v2
https://t.me/eagl3z
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1788.0 uacq
Signatures
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 2 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses 2FA software files, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- 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 6 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\ae4c66cd3c6db9a0d78b4b151e2ac1a2.exe"C:\Users\Admin\AppData\Local\Temp\ae4c66cd3c6db9a0d78b4b151e2ac1a2.exe"1⤵
- Checks computer location settings
- Loads dropped DLL
- 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 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\ae4c66cd3c6db9a0d78b4b151e2ac1a2.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 63⤵
- Delays execution with timeout.exe
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-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1136 -s 20402⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1136 -ip 11361⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
mozglue.dll
nss3.dll
memory/1136-134-0x0000000002C20000-0x0000000002D20000-memory.dmp
memory/1136-135-0x0000000004790000-0x000000000481D000-memory.dmp
memory/1136-136-0x0000000000400000-0x0000000002B82000-memory.dmp
memory/1136-146-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/1136-189-0x0000000002C20000-0x0000000002D20000-memory.dmp
memory/1136-190-0x0000000000400000-0x0000000002B82000-memory.dmp
memory/1136-191-0x0000000004790000-0x000000000481D000-memory.dmp