Analysis
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max time kernel
149s -
max time network
151s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
26-05-2024 00:27
Static task
static1
Behavioral task
behavioral1
Sample
808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe
Resource
win10v2004-20240426-en
General
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Target
808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe
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Size
2.0MB
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MD5
553b7dc8410777d155244488553fcb23
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SHA1
fb8871e1f64544a2caad4f8a3cafbe503bd6f848
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SHA256
808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b
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SHA512
2f590798a444c0a42804fc0398405054806ac057e1b45a2072148935b435bccff523743c44f4f04a01a03f2f38c29c79e4f9acd9919901ad57431ed605693840
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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 14 IoCs
Processes:
resource yara_rule behavioral2/memory/4304-2-0x00000000041E0000-0x0000000004329000-memory.dmp family_vidar_v7 behavioral2/memory/1824-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1824-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1824-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1824-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1824-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1824-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1824-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1824-51-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1824-52-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1824-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1824-64-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1824-65-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1824-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat55A2.tmppid process 1824 kat55A2.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:
808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exedescription pid process target process PID 4304 set thread context of 1824 4304 808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe kat55A2.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:
kat55A2.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat55A2.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 3784 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat55A2.tmppid process 1824 kat55A2.tmp 1824 kat55A2.tmp 1824 kat55A2.tmp 1824 kat55A2.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exekat55A2.tmpcmd.exedescription pid process target process PID 4304 wrote to memory of 1824 4304 808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe kat55A2.tmp PID 4304 wrote to memory of 1824 4304 808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe kat55A2.tmp PID 4304 wrote to memory of 1824 4304 808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe kat55A2.tmp PID 4304 wrote to memory of 1824 4304 808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe kat55A2.tmp PID 4304 wrote to memory of 1824 4304 808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe kat55A2.tmp PID 4304 wrote to memory of 1824 4304 808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe kat55A2.tmp PID 4304 wrote to memory of 1824 4304 808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe kat55A2.tmp PID 4304 wrote to memory of 1824 4304 808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe kat55A2.tmp PID 1824 wrote to memory of 2444 1824 kat55A2.tmp cmd.exe PID 1824 wrote to memory of 2444 1824 kat55A2.tmp cmd.exe PID 1824 wrote to memory of 2444 1824 kat55A2.tmp cmd.exe PID 2444 wrote to memory of 3784 2444 cmd.exe timeout.exe PID 2444 wrote to memory of 3784 2444 cmd.exe timeout.exe PID 2444 wrote to memory of 3784 2444 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe"C:\Users\Admin\AppData\Local\Temp\808f3751aad0d9b9e3b5b85263803162928caedcb16edcb8cb8985583ab9351b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat55A2.tmpC:\Users\Admin\AppData\Local\Temp\kat55A2.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\kat55A2.tmp" & rd /s /q "C:\ProgramData\GCBGCAFIIECB" & 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
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat55A2.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1824-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1824-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1824-20-0x0000000019360000-0x00000000195BF000-memory.dmpFilesize
2.4MB
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memory/1824-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1824-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1824-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1824-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1824-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1824-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1824-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1824-65-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1824-51-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1824-52-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1824-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4304-2-0x00000000041E0000-0x0000000004329000-memory.dmpFilesize
1.3MB
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memory/4304-0-0x00000000025B0000-0x00000000025B1000-memory.dmpFilesize
4KB
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memory/4304-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB