Analysis
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max time kernel
90s -
max time network
124s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-05-2024 08:48
Static task
static1
Behavioral task
behavioral1
Sample
f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe
Resource
win10v2004-20240508-en
General
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Target
f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe
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Size
1.9MB
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MD5
6132c7d40cc176752a94f528cb7b31cc
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SHA1
ee2078c17ff8b8e8bcd8ece2fc32ab579018cb1f
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SHA256
f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf
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SHA512
8fe05305cac8f117b7d9292f7b86c9e78a8123908bc0e8f80f95aca0c61a86be535ac4fcde049980c360707b370333ef968b2baf92399e64b84895ebaf9c88ed
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SSDEEP
49152:CdKfTn6v+JtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTn9tIuoITsdZ
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/240-2-0x0000000004040000-0x0000000004189000-memory.dmp family_vidar_v7 behavioral2/memory/4680-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4680-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4680-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4680-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4680-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4680-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4680-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4362.tmppid process 4680 kat4362.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:
f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exedescription pid process target process PID 240 set thread context of 4680 240 f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe kat4362.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4362.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4362.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4362.tmppid process 4680 kat4362.tmp 4680 kat4362.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exedescription pid process target process PID 240 wrote to memory of 4680 240 f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe kat4362.tmp PID 240 wrote to memory of 4680 240 f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe kat4362.tmp PID 240 wrote to memory of 4680 240 f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe kat4362.tmp PID 240 wrote to memory of 4680 240 f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe kat4362.tmp PID 240 wrote to memory of 4680 240 f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe kat4362.tmp PID 240 wrote to memory of 4680 240 f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe kat4362.tmp PID 240 wrote to memory of 4680 240 f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe kat4362.tmp PID 240 wrote to memory of 4680 240 f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe kat4362.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe"C:\Users\Admin\AppData\Local\Temp\f382bbe980cb4b1d9e83a63a2451834b3907e05a8662a67251834b70681830bf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:240 -
C:\Users\Admin\AppData\Local\Temp\kat4362.tmpC:\Users\Admin\AppData\Local\Temp\kat4362.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4680
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4362.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/240-0-0x0000000002450000-0x0000000002451000-memory.dmpFilesize
4KB
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memory/240-2-0x0000000004040000-0x0000000004189000-memory.dmpFilesize
1.3MB
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memory/240-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/4680-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4680-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4680-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4680-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4680-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4680-22-0x000000001B8E0000-0x000000001BB3F000-memory.dmpFilesize
2.4MB
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memory/4680-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4680-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB