Analysis
- max time kernel
88s - max time network
96s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
17/04/2023, 00:25
General
- Target setup.exe
- Size 473KB
- Sample230417-aql9saeb71
- SHA256 76a4ed024ae4064f850fb46eee2f83e8edd8da2dc0aa45ee023b13e43d12d5be
Malware Config
Extracted
-
vidar
-
3.4
-
e749025c61b2caca10aa829a9e1a65a1
-
https://steamcommunity.com/profiles/76561199494593681
-
https://t.me/auftriebs
-
profile_id_v2
e749025c61b2caca10aa829a9e1a65a1
-
user_agent
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:105.0) Gecko/20100101 Firefox/105.0
Signatures
- Vidar
Vidar is an infostealer based on Arkei stealer.
- 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.
- Program crash 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\setup.exe"C:\Users\Admin\AppData\Local\Temp\setup.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 19882⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4696 -ip 46961⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
mozglue.dll
nss3.dll
memory/4696-134-0x0000000002230000-0x0000000002287000-memory.dmp
memory/4696-144-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/4696-187-0x0000000000400000-0x000000000081C000-memory.dmp
memory/4696-193-0x0000000000400000-0x000000000081C000-memory.dmp