Analysis
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max time kernel
146s -
max time network
154s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
22-05-2024 22:09
Static task
static1
Behavioral task
behavioral1
Sample
75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe
Resource
win10v2004-20240508-en
General
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Target
75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe
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Size
2.0MB
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MD5
1e73837fd737cdfb77179b8c6706450d
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SHA1
fef5d663d8622502cc73ae67c3ddcf6d1088550b
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SHA256
75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1
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SHA512
5df5a0d87c3f1c32241c9135b2e8479449727fcf51269f6369ef68b7b5d924aa9a1db2b5177189bf4714e9521649aad0b8798a718e4f4fef134029da00f6d631
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SSDEEP
49152:7QzHt472D+JtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtEtIuoITsdZ
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 13 IoCs
Processes:
resource yara_rule behavioral2/memory/1392-1-0x0000000004130000-0x0000000004279000-memory.dmp family_vidar_v7 behavioral2/memory/1672-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1672-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1672-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1672-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1672-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1672-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1672-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1672-51-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1672-52-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1672-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1672-64-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1672-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat5842.tmppid process 1672 kat5842.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:
75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exedescription pid process target process PID 1392 set thread context of 1672 1392 75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe kat5842.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:
kat5842.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat5842.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2932 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat5842.tmppid process 1672 kat5842.tmp 1672 kat5842.tmp 1672 kat5842.tmp 1672 kat5842.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exekat5842.tmpcmd.exedescription pid process target process PID 1392 wrote to memory of 1672 1392 75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe kat5842.tmp PID 1392 wrote to memory of 1672 1392 75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe kat5842.tmp PID 1392 wrote to memory of 1672 1392 75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe kat5842.tmp PID 1392 wrote to memory of 1672 1392 75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe kat5842.tmp PID 1392 wrote to memory of 1672 1392 75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe kat5842.tmp PID 1392 wrote to memory of 1672 1392 75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe kat5842.tmp PID 1392 wrote to memory of 1672 1392 75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe kat5842.tmp PID 1392 wrote to memory of 1672 1392 75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe kat5842.tmp PID 1672 wrote to memory of 4204 1672 kat5842.tmp cmd.exe PID 1672 wrote to memory of 4204 1672 kat5842.tmp cmd.exe PID 1672 wrote to memory of 4204 1672 kat5842.tmp cmd.exe PID 4204 wrote to memory of 2932 4204 cmd.exe timeout.exe PID 4204 wrote to memory of 2932 4204 cmd.exe timeout.exe PID 4204 wrote to memory of 2932 4204 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe"C:\Users\Admin\AppData\Local\Temp\75aee83de71dfd55632d5aba70eb7670277a2a0797f4b033fae83a916db476a1.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat5842.tmpC:\Users\Admin\AppData\Local\Temp\kat5842.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\kat5842.tmp" & rd /s /q "C:\ProgramData\AFHDBGHJKFID" & 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\kat5842.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1392-10-0x0000000000400000-0x0000000000601000-memory.dmpFilesize
2.0MB
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memory/1392-1-0x0000000004130000-0x0000000004279000-memory.dmpFilesize
1.3MB
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memory/1392-0-0x00000000009A0000-0x00000000009A1000-memory.dmpFilesize
4KB
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memory/1672-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1672-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1672-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1672-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1672-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1672-19-0x0000000019370000-0x00000000195CF000-memory.dmpFilesize
2.4MB
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memory/1672-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1672-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1672-51-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1672-52-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1672-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1672-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1672-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB