Analysis
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max time kernel
89s -
max time network
126s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
25-05-2024 20:22
Static task
static1
Behavioral task
behavioral1
Sample
febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe
Resource
win10v2004-20240226-en
General
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Target
febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe
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Size
2.0MB
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MD5
c8e1ece4f29e3d2b225c0e7bccec9382
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SHA1
9a5a4d0e2fc541a42976123cc2dba450386f983d
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SHA256
febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3
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SHA512
e2f56d588826eff4d489f9618a769310930ccbdb9c00c2f24f7ec3f9d22dee8235792ae37a77ad491c5bc64783889cd36fcb31ad274787fb2770c6f1d32bde19
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SSDEEP
49152:s4K3x1vUiJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18itIuoITsdZ
Malware Config
Extracted
stealc
Extracted
vidar
https://steamcommunity.com/profiles/76561199689717899
https://t.me/copterwin
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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 8 IoCs
Processes:
resource yara_rule behavioral2/memory/396-2-0x00000000040C0000-0x0000000004209000-memory.dmp family_vidar_v7 behavioral2/memory/3512-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3512-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3512-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3512-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3512-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3512-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3512-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4CB8.tmppid process 3512 kat4CB8.tmp -
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
Processes:
febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exedescription pid process target process PID 396 set thread context of 3512 396 febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe kat4CB8.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4CB8.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4CB8.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4CB8.tmppid process 3512 kat4CB8.tmp 3512 kat4CB8.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exedescription pid process target process PID 396 wrote to memory of 3512 396 febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe kat4CB8.tmp PID 396 wrote to memory of 3512 396 febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe kat4CB8.tmp PID 396 wrote to memory of 3512 396 febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe kat4CB8.tmp PID 396 wrote to memory of 3512 396 febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe kat4CB8.tmp PID 396 wrote to memory of 3512 396 febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe kat4CB8.tmp PID 396 wrote to memory of 3512 396 febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe kat4CB8.tmp PID 396 wrote to memory of 3512 396 febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe kat4CB8.tmp PID 396 wrote to memory of 3512 396 febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe kat4CB8.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe"C:\Users\Admin\AppData\Local\Temp\febcef95d02713b85c9cacecfc52dd8d3fa853e06e0f9274422b22e52cdf22a3.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:396 -
C:\Users\Admin\AppData\Local\Temp\kat4CB8.tmpC:\Users\Admin\AppData\Local\Temp\kat4CB8.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3512
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4CB8.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/396-0-0x0000000002360000-0x0000000002361000-memory.dmpFilesize
4KB
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memory/396-2-0x00000000040C0000-0x0000000004209000-memory.dmpFilesize
1.3MB
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memory/396-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/3512-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3512-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3512-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3512-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3512-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3512-23-0x0000000026030000-0x000000002628F000-memory.dmpFilesize
2.4MB
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memory/3512-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3512-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB