Analysis
-
max time kernel
146s -
max time network
152s -
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 06:06
Static task
static1
Behavioral task
behavioral1
Sample
c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe
Resource
win10v2004-20240508-en
General
-
Target
c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe
-
Size
2.0MB
-
MD5
1c247eb44241c97dca3219e49c652580
-
SHA1
36b5a8f7196daa59528565b6db4a29de30f6e3c4
-
SHA256
c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7
-
SHA512
cbfa636806411ee0f8bcf1a5ea50c006a6b8abcbe1fbfbf96deb785fd6e37c300f6c8b5feebb442ee59cbb1014fafa3ff8de0f3ed4bec98b856a318657a8cc0c
-
SSDEEP
49152:s4K3x1vUiJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18itIuoITsdZ
Malware Config
Extracted
stealc
Extracted
vidar
https://steamcommunity.com/profiles/76561199689717899
https://t.me/copterwin
-
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
-
Detect Vidar Stealer 8 IoCs
Processes:
resource yara_rule behavioral2/memory/4320-2-0x0000000004100000-0x0000000004249000-memory.dmp family_vidar_v7 behavioral2/memory/1196-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1196-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1196-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1196-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1196-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1196-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1196-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
-
Executes dropped EXE 1 IoCs
Processes:
kat6810.tmppid process 1196 kat6810.tmp -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
Suspicious use of SetThreadContext 1 IoCs
Processes:
c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exedescription pid process target process PID 4320 set thread context of 1196 4320 c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe kat6810.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat6810.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat6810.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat6810.tmppid process 1196 kat6810.tmp 1196 kat6810.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exedescription pid process target process PID 4320 wrote to memory of 1196 4320 c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe kat6810.tmp PID 4320 wrote to memory of 1196 4320 c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe kat6810.tmp PID 4320 wrote to memory of 1196 4320 c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe kat6810.tmp PID 4320 wrote to memory of 1196 4320 c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe kat6810.tmp PID 4320 wrote to memory of 1196 4320 c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe kat6810.tmp PID 4320 wrote to memory of 1196 4320 c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe kat6810.tmp PID 4320 wrote to memory of 1196 4320 c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe kat6810.tmp PID 4320 wrote to memory of 1196 4320 c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe kat6810.tmp
Processes
-
C:\Users\Admin\AppData\Local\Temp\c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe"C:\Users\Admin\AppData\Local\Temp\c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4320 -
C:\Users\Admin\AppData\Local\Temp\kat6810.tmpC:\Users\Admin\AppData\Local\Temp\kat6810.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1196
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Temp\kat6810.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
-
memory/1196-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/1196-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/1196-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/1196-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/1196-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/1196-21-0x0000000019430000-0x000000001968F000-memory.dmpFilesize
2.4MB
-
memory/1196-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/1196-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/4320-0-0x0000000002460000-0x0000000002461000-memory.dmpFilesize
4KB
-
memory/4320-2-0x0000000004100000-0x0000000004249000-memory.dmpFilesize
1.3MB
-
memory/4320-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB