Analysis
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max time kernel
90s -
max time network
123s -
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 07:26
Static task
static1
Behavioral task
behavioral1
Sample
d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe
Resource
win10v2004-20240426-en
General
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Target
d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe
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Size
2.0MB
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MD5
3294f84f677fcf66590ee280b80081a1
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SHA1
ec96a874263fc4691584e14c91a08e8f9ead79a2
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SHA256
d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc
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SHA512
fd74d2cca0ff3966d553fd29206d75b879c5e1a729c2e15d93920d5349506d3814c3e1a734866121ff97fcde85777236492f72431e1555c9dd4f09aa58537042
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SSDEEP
49152:s4K3x1vUqJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18qtIuoITsdZ
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 8 IoCs
Processes:
resource yara_rule behavioral2/memory/2320-1-0x00000000040D0000-0x0000000004219000-memory.dmp family_vidar_v7 behavioral2/memory/1932-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1932-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1932-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1932-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1932-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1932-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1932-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat48B1.tmppid process 1932 kat48B1.tmp -
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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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:
d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exedescription pid process target process PID 2320 set thread context of 1932 2320 d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe kat48B1.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat48B1.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat48B1.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat48B1.tmppid process 1932 kat48B1.tmp 1932 kat48B1.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exedescription pid process target process PID 2320 wrote to memory of 1932 2320 d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe kat48B1.tmp PID 2320 wrote to memory of 1932 2320 d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe kat48B1.tmp PID 2320 wrote to memory of 1932 2320 d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe kat48B1.tmp PID 2320 wrote to memory of 1932 2320 d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe kat48B1.tmp PID 2320 wrote to memory of 1932 2320 d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe kat48B1.tmp PID 2320 wrote to memory of 1932 2320 d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe kat48B1.tmp PID 2320 wrote to memory of 1932 2320 d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe kat48B1.tmp PID 2320 wrote to memory of 1932 2320 d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe kat48B1.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe"C:\Users\Admin\AppData\Local\Temp\d386b7e0fe0d94dd301ed247833e8a5514b53aaa656f89a79e310c45264360cc.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat48B1.tmpC:\Users\Admin\AppData\Local\Temp\kat48B1.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat48B1.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1932-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1932-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1932-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1932-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1932-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1932-23-0x000000001B880000-0x000000001BADF000-memory.dmpFilesize
2.4MB
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memory/1932-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1932-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2320-0-0x00000000008C0000-0x00000000008C1000-memory.dmpFilesize
4KB
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memory/2320-1-0x00000000040D0000-0x0000000004219000-memory.dmpFilesize
1.3MB
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memory/2320-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB