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Analysis
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max time kernel
79s -
max time network
139s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
20/09/2024, 14:17
Static task
static1
Behavioral task
behavioral1
Sample
41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe
Resource
win10v2004-20240802-en
General
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Target
41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe
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Size
292KB
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MD5
0c4b826cab211945649ac4bbb0c48c6b
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SHA1
fe0132f85b63833f55a41651fcc0f32c1c96124d
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SHA256
41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c
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SHA512
6e4ea6a514002c61cadfea41ae6aa9e81178570dbae5f78b79e95f654dc6c7716a8f98b812c805ad45423f0e657fab260492e46b2e6bb45d25520d933dc27363
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SSDEEP
6144:D8zag1zxFKmMqtXpA8dI41MwJckA3/l6ah4LXeofOdLBhShSpk+JEO:OjNxjXrX1z1845DdfCLBxZEO
Malware Config
Extracted
vidar
https://t.me/edm0d
https://steamcommunity.com/profiles/76561199768374681
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0
Signatures
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Detect Vidar Stealer 7 IoCs
resource yara_rule behavioral2/memory/4716-11-0x0000000000400000-0x0000000000657000-memory.dmp family_vidar_v7 behavioral2/memory/4716-9-0x0000000000400000-0x0000000000657000-memory.dmp family_vidar_v7 behavioral2/memory/4716-4-0x0000000000400000-0x0000000000657000-memory.dmp family_vidar_v7 behavioral2/memory/4716-25-0x0000000000400000-0x0000000000657000-memory.dmp family_vidar_v7 behavioral2/memory/4716-26-0x0000000000400000-0x0000000000657000-memory.dmp family_vidar_v7 behavioral2/memory/4716-42-0x0000000000400000-0x0000000000657000-memory.dmp family_vidar_v7 behavioral2/memory/4716-43-0x0000000000400000-0x0000000000657000-memory.dmp family_vidar_v7 -
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
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Downloads MZ/PE file
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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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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
description pid Process procid_target PID 4176 set thread context of 4716 4176 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe 85 -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 RegAsm.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4716 RegAsm.exe 4716 RegAsm.exe 4716 RegAsm.exe 4716 RegAsm.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 4176 wrote to memory of 4716 4176 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe 85 PID 4176 wrote to memory of 4716 4176 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe 85 PID 4176 wrote to memory of 4716 4176 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe 85 PID 4176 wrote to memory of 4716 4176 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe 85 PID 4176 wrote to memory of 4716 4176 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe 85 PID 4176 wrote to memory of 4716 4176 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe 85 PID 4176 wrote to memory of 4716 4176 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe 85 PID 4176 wrote to memory of 4716 4176 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe 85 PID 4176 wrote to memory of 4716 4176 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe 85 PID 4176 wrote to memory of 4716 4176 41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe"C:\Users\Admin\AppData\Local\Temp\41b381e462f4108957fbab888701dfb9e605621507f8dd2d3f71a32b429c5f0c.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4176 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4716
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Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1