Analysis
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max time kernel
90s -
max time network
129s -
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 21:53
Static task
static1
Behavioral task
behavioral1
Sample
6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe
Resource
win10v2004-20240426-en
General
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Target
6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe
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Size
2.0MB
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MD5
dc6c57b2b64e6954ecb098fab260a861
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SHA1
512df27b255ece715a0d5f7751e511f93f8c4140
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SHA256
6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2
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SHA512
6673b5deecc215fab14ea02af94d3ad5ea83f3c8cc2d6c32660ced98405293d51784568a851fd17df1eb3990ce356edd89b99b411736f64a457cc9389c3fdb09
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SSDEEP
49152:OePpQEdJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEdtIuoITsdZ
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/3364-1-0x00000000042A0000-0x00000000043E9000-memory.dmp family_vidar_v7 behavioral2/memory/4636-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4636-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4636-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4636-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4636-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4636-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4636-53-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4636-54-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4636-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4636-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4636-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4636-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4636-71-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat445C.tmppid process 4636 kat445C.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:
6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exedescription pid process target process PID 3364 set thread context of 4636 3364 6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe kat445C.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:
kat445C.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat445C.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1756 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat445C.tmppid process 4636 kat445C.tmp 4636 kat445C.tmp 4636 kat445C.tmp 4636 kat445C.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exekat445C.tmpcmd.exedescription pid process target process PID 3364 wrote to memory of 4636 3364 6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe kat445C.tmp PID 3364 wrote to memory of 4636 3364 6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe kat445C.tmp PID 3364 wrote to memory of 4636 3364 6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe kat445C.tmp PID 3364 wrote to memory of 4636 3364 6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe kat445C.tmp PID 3364 wrote to memory of 4636 3364 6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe kat445C.tmp PID 3364 wrote to memory of 4636 3364 6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe kat445C.tmp PID 3364 wrote to memory of 4636 3364 6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe kat445C.tmp PID 3364 wrote to memory of 4636 3364 6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe kat445C.tmp PID 4636 wrote to memory of 2492 4636 kat445C.tmp cmd.exe PID 4636 wrote to memory of 2492 4636 kat445C.tmp cmd.exe PID 4636 wrote to memory of 2492 4636 kat445C.tmp cmd.exe PID 2492 wrote to memory of 1756 2492 cmd.exe timeout.exe PID 2492 wrote to memory of 1756 2492 cmd.exe timeout.exe PID 2492 wrote to memory of 1756 2492 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe"C:\Users\Admin\AppData\Local\Temp\6db4da3b6c5aa8cb457d4a3e44eb6e10d0563f06edf83feb4253dde78d9be5f2.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat445C.tmpC:\Users\Admin\AppData\Local\Temp\kat445C.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\kat445C.tmp" & rd /s /q "C:\ProgramData\AEGIJKEHCAKF" & 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\kat445C.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3364-9-0x0000000000400000-0x0000000000612000-memory.dmpFilesize
2.1MB
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memory/3364-1-0x00000000042A0000-0x00000000043E9000-memory.dmpFilesize
1.3MB
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memory/3364-0-0x00000000024B0000-0x00000000024B1000-memory.dmpFilesize
4KB
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memory/4636-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4636-53-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4636-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4636-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4636-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4636-22-0x000000001B8D0000-0x000000001BB2F000-memory.dmpFilesize
2.4MB
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memory/4636-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4636-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4636-54-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4636-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4636-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4636-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4636-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4636-71-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB