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Analysis
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max time kernel
125s -
max time network
131s -
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, 14:27
Static task
static1
Behavioral task
behavioral1
Sample
2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe
Resource
win10v2004-20240802-en
General
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Target
2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe
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Size
401KB
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MD5
cd681a24c9d79c3af8caa1843296a062
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SHA1
c18bfd79658cd691170595dd5b4dd586c21b954c
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SHA256
2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf
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SHA512
2527a1a2acdf8c87e4b459683f6f287bc6fb65ff9eb979c830ec9dfd685380c633787b247b65c3fe3bf57f5c598f48700742f8d8d056c971ed5744e2eb9f5cb5
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SSDEEP
12288:CgIVaGe6BEIaaJLq2vru6fv8PF5Nn5e4AkArjUdG8L:NGmLaufTe5rUdG8L
Malware Config
Extracted
vidar
11
728eadc0b38790aac08b64fd1b8adb1f
https://steamcommunity.com/profiles/76561199780418869
https://t.me/ae5ed
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0
Signatures
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Detect Vidar Stealer 7 IoCs
resource yara_rule behavioral2/memory/636-4-0x0000000000400000-0x0000000000675000-memory.dmp family_vidar_v7 behavioral2/memory/636-11-0x0000000000400000-0x0000000000675000-memory.dmp family_vidar_v7 behavioral2/memory/636-9-0x0000000000400000-0x0000000000675000-memory.dmp family_vidar_v7 behavioral2/memory/636-20-0x0000000000400000-0x0000000000675000-memory.dmp family_vidar_v7 behavioral2/memory/636-21-0x0000000000400000-0x0000000000675000-memory.dmp family_vidar_v7 behavioral2/memory/636-37-0x0000000000400000-0x0000000000675000-memory.dmp family_vidar_v7 behavioral2/memory/636-38-0x0000000000400000-0x0000000000675000-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 3008 set thread context of 636 3008 2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe 90 -
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 2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.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 636 RegAsm.exe 636 RegAsm.exe 636 RegAsm.exe 636 RegAsm.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 3008 wrote to memory of 636 3008 2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe 90 PID 3008 wrote to memory of 636 3008 2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe 90 PID 3008 wrote to memory of 636 3008 2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe 90 PID 3008 wrote to memory of 636 3008 2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe 90 PID 3008 wrote to memory of 636 3008 2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe 90 PID 3008 wrote to memory of 636 3008 2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe 90 PID 3008 wrote to memory of 636 3008 2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe 90 PID 3008 wrote to memory of 636 3008 2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe 90 PID 3008 wrote to memory of 636 3008 2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe 90 PID 3008 wrote to memory of 636 3008 2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe"C:\Users\Admin\AppData\Local\Temp\2b85d82dd140d794a295b87bb250ebcdfa1aeb1d729f74c37ac0b07083e70daf.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3008 -
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:636
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4176,i,2727319350781907497,7925939240893079607,262144 --variations-seed-version --mojo-platform-channel-handle=4240 /prefetch:81⤵PID:348
Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1