Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
24-05-2024 16:48
Static task
static1
Behavioral task
behavioral1
Sample
13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe
Resource
win10v2004-20240508-en
General
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Target
13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe
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Size
2.0MB
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MD5
7b6edf7e0426618c26e406c4ec24c650
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SHA1
b1dd839f50eb4482a6f6763cd1db4d2df0a41e7f
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SHA256
13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d
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SHA512
7c6462fef826be5f75e7aab13908e91b43dd80589b9bbd88c0ed5ff517b7ee24e6604447f856bb45b1b95d566d5d40c2db963a206ff38f6a4713d9398dad31d2
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SSDEEP
49152:s4K3x1vU6JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex186tIuoITsdZ
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/4788-1-0x0000000004050000-0x0000000004199000-memory.dmp family_vidar_v7 behavioral1/memory/3228-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3228-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3228-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3228-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3228-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3228-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3228-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat440E.tmppid process 3228 kat440E.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:
13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exedescription pid process target process PID 4788 set thread context of 3228 4788 13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe kat440E.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat440E.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat440E.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat440E.tmppid process 3228 kat440E.tmp 3228 kat440E.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exedescription pid process target process PID 4788 wrote to memory of 3228 4788 13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe kat440E.tmp PID 4788 wrote to memory of 3228 4788 13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe kat440E.tmp PID 4788 wrote to memory of 3228 4788 13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe kat440E.tmp PID 4788 wrote to memory of 3228 4788 13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe kat440E.tmp PID 4788 wrote to memory of 3228 4788 13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe kat440E.tmp PID 4788 wrote to memory of 3228 4788 13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe kat440E.tmp PID 4788 wrote to memory of 3228 4788 13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe kat440E.tmp PID 4788 wrote to memory of 3228 4788 13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe kat440E.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe"C:\Users\Admin\AppData\Local\Temp\13b733a19ef17115272c713b65922ea9dd46ac6e836f1aa79eedb9588350441d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat440E.tmpC:\Users\Admin\AppData\Local\Temp\kat440E.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\kat440E.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3228-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3228-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3228-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3228-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3228-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3228-20-0x000000001B7A0000-0x000000001B9FF000-memory.dmpFilesize
2.4MB
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memory/3228-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3228-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4788-0-0x0000000002270000-0x0000000002271000-memory.dmpFilesize
4KB
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memory/4788-1-0x0000000004050000-0x0000000004199000-memory.dmpFilesize
1.3MB
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memory/4788-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB