Analysis
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max time kernel
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max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
04-06-2024 01:35
Static task
static1
Behavioral task
behavioral1
Sample
3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe
Resource
win7-20240508-en
General
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Target
3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe
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Size
416KB
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MD5
3e54245fb579c525a1ee9f8830a12194
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SHA1
ccc3d6422f19b824051841eb58698536a8f223d7
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SHA256
3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a
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SHA512
f0d6db9fea61aafa8a9c0b3ba25110bbc3ca9ae32e7cc5416872a6683f2dee6a5909f4f206f9c934f0e42711f4a88f8a3513214de7de74fcb18e8266b4714558
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SSDEEP
12288:RdkUBLHCIUDuVVCTh3pbB1r7Dt5r88s0CTEO:RdNhCIFVCTh3pb7rF5Dkt
Malware Config
Extracted
stealc
Extracted
vidar
https://t.me/ta904ek
https://steamcommunity.com/profiles/76561199695752269
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
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Detect Vidar Stealer 11 IoCs
Processes:
resource yara_rule behavioral2/memory/4272-1-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4272-6-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4272-4-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4272-20-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4272-21-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4272-38-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4272-39-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4272-55-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4272-56-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4272-70-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4272-71-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
RegAsm.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation RegAsm.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exedescription pid process target process PID 4508 set thread context of 4272 4508 3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe RegAsm.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
RegAsm.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString RegAsm.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 5688 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
RegAsm.exepid process 4272 RegAsm.exe 4272 RegAsm.exe 4272 RegAsm.exe 4272 RegAsm.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exeRegAsm.execmd.exedescription pid process target process PID 4508 wrote to memory of 4272 4508 3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe RegAsm.exe PID 4508 wrote to memory of 4272 4508 3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe RegAsm.exe PID 4508 wrote to memory of 4272 4508 3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe RegAsm.exe PID 4508 wrote to memory of 4272 4508 3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe RegAsm.exe PID 4508 wrote to memory of 4272 4508 3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe RegAsm.exe PID 4508 wrote to memory of 4272 4508 3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe RegAsm.exe PID 4508 wrote to memory of 4272 4508 3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe RegAsm.exe PID 4508 wrote to memory of 4272 4508 3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe RegAsm.exe PID 4508 wrote to memory of 4272 4508 3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe RegAsm.exe PID 4272 wrote to memory of 2192 4272 RegAsm.exe cmd.exe PID 4272 wrote to memory of 2192 4272 RegAsm.exe cmd.exe PID 4272 wrote to memory of 2192 4272 RegAsm.exe cmd.exe PID 2192 wrote to memory of 5688 2192 cmd.exe timeout.exe PID 2192 wrote to memory of 5688 2192 cmd.exe timeout.exe PID 2192 wrote to memory of 5688 2192 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe"C:\Users\Admin\AppData\Local\Temp\3ab231d18be903a1364b8ed968ee9ac3fe1a82bb75235ec8e7088b76b87b518a.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4508 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Checks computer location settings
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4272 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\HCFBFBAEBKJK" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:2192 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:5688
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