Analysis
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max time kernel
93s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
01-06-2024 06:55
Static task
static1
Behavioral task
behavioral1
Sample
5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe
Resource
win7-20240221-en
General
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Target
5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe
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Size
402KB
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MD5
6b0ed984f58e5bf958aa797ca37b2770
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SHA1
4cf2f8ffea5c4edb12a6276ab32b1070ee68b0aa
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SHA256
5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828
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SHA512
4a9ba5d98da78d66d166ce84e27e9917164f877215d07567c6133c1f8bbab27e0ca7637ab5fe9102edd9c673c2e580b8e84da6e2d3e1d6751ddc3f3ff5a53e55
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SSDEEP
12288:DCWEasOaXz2Lgg18JaW70J3iw3iC5yBxdUC:WJahaDQb8JaU0gP+yBxa
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/3088-1-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/3088-4-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/3088-6-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/3088-9-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/3088-10-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/3088-27-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/3088-28-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/3088-44-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/3088-45-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/3088-59-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/3088-60-0x0000000000400000-0x0000000000649000-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-1-5-21-3906287020-2915474608-1755617787-1000\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:
5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exedescription pid Process procid_target PID 4076 set thread context of 3088 4076 5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe 84 -
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 1896 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
RegAsm.exepid Process 3088 RegAsm.exe 3088 RegAsm.exe 3088 RegAsm.exe 3088 RegAsm.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exeRegAsm.execmd.exedescription pid Process procid_target PID 4076 wrote to memory of 3088 4076 5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe 84 PID 4076 wrote to memory of 3088 4076 5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe 84 PID 4076 wrote to memory of 3088 4076 5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe 84 PID 4076 wrote to memory of 3088 4076 5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe 84 PID 4076 wrote to memory of 3088 4076 5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe 84 PID 4076 wrote to memory of 3088 4076 5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe 84 PID 4076 wrote to memory of 3088 4076 5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe 84 PID 4076 wrote to memory of 3088 4076 5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe 84 PID 4076 wrote to memory of 3088 4076 5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe 84 PID 3088 wrote to memory of 4816 3088 RegAsm.exe 92 PID 3088 wrote to memory of 4816 3088 RegAsm.exe 92 PID 3088 wrote to memory of 4816 3088 RegAsm.exe 92 PID 4816 wrote to memory of 1896 4816 cmd.exe 94 PID 4816 wrote to memory of 1896 4816 cmd.exe 94 PID 4816 wrote to memory of 1896 4816 cmd.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe"C:\Users\Admin\AppData\Local\Temp\5f2104232bfacfbad61fc2f509758069cbeab12f5082f7927659ddbccbcce828.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4076 -
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:3088 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\DAKJDHIEBFII" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:4816 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:1896
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