Analysis
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max time kernel
146s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
26-05-2024 23:25
Static task
static1
Behavioral task
behavioral1
Sample
1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe
Resource
win10v2004-20240508-en
General
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Target
1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe
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Size
2.0MB
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MD5
5800c99c367f03d08eaff1f4d253f84e
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SHA1
b4920948f2747017386f6ceec81dea5661e31df1
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SHA256
1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a
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SHA512
dd12a4a3d68a2eb91176a8d49d8f5cb64502b8f92cc80781343ac7720f9e1dba6b2e092f06f7ed4c04cb7bdc46572cbc7f4f9d9fd9c8bae7cbccc49403e18c1a
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SSDEEP
49152:OePpQEhJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEhtIuoITsdZ
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/1932-3-0x0000000004060000-0x00000000041A9000-memory.dmp family_vidar_v7 behavioral2/memory/4896-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4896-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4896-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4896-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4896-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4896-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4896-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4896-54-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4896-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4896-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4896-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4896-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4896-69-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat6C56.tmppid process 4896 kat6C56.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:
1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exedescription pid process target process PID 1932 set thread context of 4896 1932 1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe kat6C56.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:
kat6C56.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat6C56.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2228 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat6C56.tmppid process 4896 kat6C56.tmp 4896 kat6C56.tmp 4896 kat6C56.tmp 4896 kat6C56.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exekat6C56.tmpcmd.exedescription pid process target process PID 1932 wrote to memory of 4896 1932 1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe kat6C56.tmp PID 1932 wrote to memory of 4896 1932 1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe kat6C56.tmp PID 1932 wrote to memory of 4896 1932 1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe kat6C56.tmp PID 1932 wrote to memory of 4896 1932 1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe kat6C56.tmp PID 1932 wrote to memory of 4896 1932 1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe kat6C56.tmp PID 1932 wrote to memory of 4896 1932 1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe kat6C56.tmp PID 1932 wrote to memory of 4896 1932 1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe kat6C56.tmp PID 1932 wrote to memory of 4896 1932 1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe kat6C56.tmp PID 4896 wrote to memory of 3956 4896 kat6C56.tmp cmd.exe PID 4896 wrote to memory of 3956 4896 kat6C56.tmp cmd.exe PID 4896 wrote to memory of 3956 4896 kat6C56.tmp cmd.exe PID 3956 wrote to memory of 2228 3956 cmd.exe timeout.exe PID 3956 wrote to memory of 2228 3956 cmd.exe timeout.exe PID 3956 wrote to memory of 2228 3956 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe"C:\Users\Admin\AppData\Local\Temp\1901d4a603a8cdf5de8507ad09c161106fbd4b05dab53f38431c02a554fa3f8a.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat6C56.tmpC:\Users\Admin\AppData\Local\Temp\kat6C56.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat6C56.tmp" & rd /s /q "C:\ProgramData\DBFIDGIIIJDB" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\kat6C56.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1932-3-0x0000000004060000-0x00000000041A9000-memory.dmpFilesize
1.3MB
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memory/1932-0-0x0000000002380000-0x0000000002381000-memory.dmpFilesize
4KB
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memory/1932-10-0x0000000000400000-0x0000000000612000-memory.dmpFilesize
2.1MB
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memory/4896-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4896-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4896-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4896-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4896-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4896-22-0x000000001B910000-0x000000001BB6F000-memory.dmpFilesize
2.4MB
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memory/4896-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4896-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4896-54-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4896-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4896-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4896-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4896-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4896-69-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB