Analysis
- max time kernel
51s - max time network
49s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system - submitted
14/06/2024, 03:45
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20240221-en
11 signatures
150 seconds
General
- Target file.exe
- Size 4.0MB
- Sample240614-ea3n2stgka
- SHA256 b26b1074a9b97f7f8be564b70f50ee965df6b8773695ba25d72c2638d3c90586
- MD5 04976c9e6aa8481402075c917916a83e
- SHA1 4079a6cca10bbdaccd13401f30a1a95276db7eb9
- SHA512 4ea2b676678d883457e434bbeee3cd3f88f0eb3c80013551459077c064b5f6103dd1b51882cf4c56f52d5369d1c4e00d0f3cd1db006c804fcdb7333292e7402a
- SSDEEP 49152:u70LoELHB0Bw+PQQEB8Im+XkOAwuzIeIEJgHLXIizBMBaPKVY:uI0ELm/keIECrXId4aY
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
Family
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stealc
rc4.plain
Extracted
Family
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vidar
C2
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https://88.99.127.107
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https://t.me/memve4erin
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https://steamcommunity.com/profiles/76561199699680841
Attributes
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0
Signatures
- Detect Vidar Stealer 6 IoCs
resource yara_rule behavioral2/memory/1948-69-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1948-67-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1948-73-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1948-75-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1948-76-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1948-78-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4808 set thread context of 1948 4808 file.exe 85 - Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString MSBuild.exe - Delays execution with timeout.exe 1 IoCs
pid Process 4084 timeout.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1948 MSBuild.exe 1948 MSBuild.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4808 file.exe - Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4808 wrote to memory of 1948 4808 file.exe 85 PID 4808 wrote to memory of 1948 4808 file.exe 85 PID 4808 wrote to memory of 1948 4808 file.exe 85 PID 4808 wrote to memory of 1948 4808 file.exe 85 PID 4808 wrote to memory of 1948 4808 file.exe 85 PID 4808 wrote to memory of 1948 4808 file.exe 85 PID 4808 wrote to memory of 1948 4808 file.exe 85 PID 4808 wrote to memory of 1948 4808 file.exe 85 PID 4808 wrote to memory of 1948 4808 file.exe 85 PID 1948 wrote to memory of 208 1948 MSBuild.exe 88 PID 1948 wrote to memory of 208 1948 MSBuild.exe 88 PID 1948 wrote to memory of 208 1948 MSBuild.exe 88 PID 208 wrote to memory of 4084 208 cmd.exe 90 PID 208 wrote to memory of 4084 208 cmd.exe 90 PID 208 wrote to memory of 4084 208 cmd.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4808 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"2⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1948 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" & rd /s /q "C:\ProgramData\GHDHDBAECGCA" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:208 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:4084
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