Analysis
-
max time kernel
90s -
max time network
124s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
07-06-2024 07:59
Static task
static1
Behavioral task
behavioral1
Sample
ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe
Resource
win10v2004-20240508-en
General
-
Target
ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe
-
Size
2.5MB
-
MD5
bf01a7d936fdfa4e714404012dfa83ff
-
SHA1
af619447dd163e66af630aff77b1cd9e4de4ffcd
-
SHA256
ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5
-
SHA512
2f31abc9080ada33645bfa97446963be1ee20922623e50f5d97013fa46f8e10f658788924276a6091019bba11d442f3b4d58b80a02530b2384439f470018dcb0
-
SSDEEP
49152:Zcm4081qpZBUbHEmJssEAQACR07Q3byRD8aXY658:ZcmmqvBUbHtOfAw07QLyLn
Malware Config
Extracted
stealc
Extracted
vidar
https://t.me/r8z0l
https://steamcommunity.com/profiles/76561199698764354
-
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/416-1-0x00000000040D0000-0x0000000004233000-memory.dmp family_vidar_v7 behavioral2/memory/780-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/780-10-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/780-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/780-24-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/780-25-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/780-42-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/780-43-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
-
Executes dropped EXE 1 IoCs
Processes:
kat50EF.tmppid process 780 kat50EF.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:
ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exedescription pid process target process PID 416 set thread context of 780 416 ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe kat50EF.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat50EF.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat50EF.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat50EF.tmppid process 780 kat50EF.tmp 780 kat50EF.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exedescription pid process target process PID 416 wrote to memory of 780 416 ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe kat50EF.tmp PID 416 wrote to memory of 780 416 ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe kat50EF.tmp PID 416 wrote to memory of 780 416 ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe kat50EF.tmp PID 416 wrote to memory of 780 416 ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe kat50EF.tmp PID 416 wrote to memory of 780 416 ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe kat50EF.tmp PID 416 wrote to memory of 780 416 ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe kat50EF.tmp PID 416 wrote to memory of 780 416 ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe kat50EF.tmp PID 416 wrote to memory of 780 416 ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe kat50EF.tmp
Processes
-
C:\Users\Admin\AppData\Local\Temp\ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe"C:\Users\Admin\AppData\Local\Temp\ac8b8e76ec29e5a82b3d6e84bfbb98243f4f84d3b6a1f2de439ed660b2de91f5.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:416 -
C:\Users\Admin\AppData\Local\Temp\kat50EF.tmpC:\Users\Admin\AppData\Local\Temp\kat50EF.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:780
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f