Analysis
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max time kernel
90s -
max time network
124s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-05-2024 23:48
Static task
static1
Behavioral task
behavioral1
Sample
57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe
Resource
win10v2004-20240426-en
General
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Target
57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe
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Size
1.9MB
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MD5
5188f7801a4006a613dd6e9395a9c4b8
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SHA1
e7963be13b76be8f43c0055bb22b9b45ef03e12f
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SHA256
57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69
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SHA512
01137130158c40313264778072e4fa063d1eac6bce8bf00e6bb95362c2414aeefdcc803bf9e071bd136cc0fff906cb8ffb49ea63e4fc585970177b59e0b01392
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SSDEEP
49152:CdKfTn6vWJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnNtIuoITsdZ
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 14 IoCs
Processes:
resource yara_rule behavioral2/memory/1744-1-0x0000000004040000-0x0000000004189000-memory.dmp family_vidar_v7 behavioral2/memory/3764-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3764-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3764-7-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3764-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3764-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3764-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3764-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3764-54-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3764-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3764-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3764-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3764-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3764-69-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat38F2.tmppid process 3764 kat38F2.tmp -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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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:
57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exedescription pid process target process PID 1744 set thread context of 3764 1744 57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe kat38F2.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat38F2.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat38F2.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2208 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat38F2.tmppid process 3764 kat38F2.tmp 3764 kat38F2.tmp 3764 kat38F2.tmp 3764 kat38F2.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exekat38F2.tmpcmd.exedescription pid process target process PID 1744 wrote to memory of 3764 1744 57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe kat38F2.tmp PID 1744 wrote to memory of 3764 1744 57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe kat38F2.tmp PID 1744 wrote to memory of 3764 1744 57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe kat38F2.tmp PID 1744 wrote to memory of 3764 1744 57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe kat38F2.tmp PID 1744 wrote to memory of 3764 1744 57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe kat38F2.tmp PID 1744 wrote to memory of 3764 1744 57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe kat38F2.tmp PID 1744 wrote to memory of 3764 1744 57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe kat38F2.tmp PID 1744 wrote to memory of 3764 1744 57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe kat38F2.tmp PID 3764 wrote to memory of 2060 3764 kat38F2.tmp cmd.exe PID 3764 wrote to memory of 2060 3764 kat38F2.tmp cmd.exe PID 3764 wrote to memory of 2060 3764 kat38F2.tmp cmd.exe PID 2060 wrote to memory of 2208 2060 cmd.exe timeout.exe PID 2060 wrote to memory of 2208 2060 cmd.exe timeout.exe PID 2060 wrote to memory of 2208 2060 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe"C:\Users\Admin\AppData\Local\Temp\57f45e88a71fb73ab7c3cba8c9b032f08b2ccd16df35ae8144685c386e381d69.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1744 -
C:\Users\Admin\AppData\Local\Temp\kat38F2.tmpC:\Users\Admin\AppData\Local\Temp\kat38F2.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3764 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp" & rd /s /q "C:\ProgramData\GHDAAKJEGCFC" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:2060 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:2208
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat38F2.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1744-1-0x0000000004040000-0x0000000004189000-memory.dmpFilesize
1.3MB
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memory/1744-0-0x00000000008A0000-0x00000000008A1000-memory.dmpFilesize
4KB
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memory/1744-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/3764-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3764-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3764-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3764-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3764-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3764-23-0x000000001B8F0000-0x000000001BB4F000-memory.dmpFilesize
2.4MB
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memory/3764-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3764-7-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3764-54-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3764-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3764-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3764-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3764-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3764-69-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB