Analysis
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max time kernel
133s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 20:56
Static task
static1
Behavioral task
behavioral1
Sample
fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe
Resource
win10v2004-20240508-en
General
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Target
fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe
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Size
2.0MB
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MD5
5220484ada22e118f97246434e20553e
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SHA1
a2aa5d8782305c9a97517893afb4f9737ce437db
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SHA256
fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e
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SHA512
3057a7152176574e046d79503f2c0b0fc8e1afd1624c247fd78a9c9fb4ced861c01ef468448752e8d46acd996c7f044cef7dab8905ed9a7e0c864410054563b4
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SSDEEP
49152:s4K3x1vUKJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18KtIuoITsdZ
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 behavioral1/memory/1564-1-0x0000000004040000-0x0000000004189000-memory.dmp family_vidar_v7 behavioral1/memory/1880-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1880-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1880-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1880-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1880-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1880-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1880-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat48B1.tmppid process 1880 kat48B1.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:
fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exedescription pid process target process PID 1564 set thread context of 1880 1564 fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe kat48B1.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat48B1.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat48B1.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat48B1.tmppid process 1880 kat48B1.tmp 1880 kat48B1.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exedescription pid process target process PID 1564 wrote to memory of 1880 1564 fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe kat48B1.tmp PID 1564 wrote to memory of 1880 1564 fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe kat48B1.tmp PID 1564 wrote to memory of 1880 1564 fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe kat48B1.tmp PID 1564 wrote to memory of 1880 1564 fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe kat48B1.tmp PID 1564 wrote to memory of 1880 1564 fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe kat48B1.tmp PID 1564 wrote to memory of 1880 1564 fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe kat48B1.tmp PID 1564 wrote to memory of 1880 1564 fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe kat48B1.tmp PID 1564 wrote to memory of 1880 1564 fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe kat48B1.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe"C:\Users\Admin\AppData\Local\Temp\fdd64c1aa8c928f4584fd902451b6ea026db402678dcf37167912d3c4d6de31e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat48B1.tmpC:\Users\Admin\AppData\Local\Temp\kat48B1.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat48B1.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1564-0-0x00000000007B0000-0x00000000007B1000-memory.dmpFilesize
4KB
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memory/1564-1-0x0000000004040000-0x0000000004189000-memory.dmpFilesize
1.3MB
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memory/1564-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/1880-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1880-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1880-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1880-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1880-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1880-22-0x000000001B780000-0x000000001B9DF000-memory.dmpFilesize
2.4MB
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memory/1880-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1880-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB