Analysis
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max time kernel
92s -
max time network
126s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
02-07-2024 00:37
Static task
static1
Behavioral task
behavioral1
Sample
65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe
Resource
win10v2004-20240611-en
General
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Target
65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe
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Size
1.6MB
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MD5
a2b9ec66fd86910e1d9bc50db2aa45be
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SHA1
0f885b952cc5f6d0275cceefc662a3371eb95b3f
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SHA256
65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6
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SHA512
a1ac591cfa85d35f9ad5163738f2b425b651a0c641eac9f4ad2414cbc69c2f7e0c4419c533131a88c4667f721f9ce6d9f67deaf8f8ad43b39440ee3cde4cec1b
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SSDEEP
24576:T16dvdD4B0+lFJU2MZQti1u8LnsDJY6WpEYGYPORL4UjqmiIS5BxxK:T1Km2OG21tuuIeNHYGY0LzjsJxK
Malware Config
Extracted
vidar
https://t.me/g067n
https://steamcommunity.com/profiles/76561199707802586
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0
Signatures
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Detect Vidar Stealer 13 IoCs
Processes:
resource yara_rule behavioral2/memory/916-2-0x0000000003FE0000-0x00000000040F3000-memory.dmp family_vidar_v7 behavioral2/memory/2884-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2884-9-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2884-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2884-24-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2884-25-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2884-42-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2884-43-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2884-59-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2884-60-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2884-71-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2884-72-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2884-75-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat72AF.tmppid process 2884 kat72AF.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 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:
65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exedescription pid process target process PID 916 set thread context of 2884 916 65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe kat72AF.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 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat72AF.tmpdescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 kat72AF.tmp Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat72AF.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 4948 timeout.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
kat72AF.tmppid process 2884 kat72AF.tmp 2884 kat72AF.tmp 2884 kat72AF.tmp 2884 kat72AF.tmp 2884 kat72AF.tmp 2884 kat72AF.tmp 2884 kat72AF.tmp 2884 kat72AF.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exekat72AF.tmpcmd.exedescription pid process target process PID 916 wrote to memory of 2884 916 65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe kat72AF.tmp PID 916 wrote to memory of 2884 916 65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe kat72AF.tmp PID 916 wrote to memory of 2884 916 65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe kat72AF.tmp PID 916 wrote to memory of 2884 916 65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe kat72AF.tmp PID 916 wrote to memory of 2884 916 65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe kat72AF.tmp PID 916 wrote to memory of 2884 916 65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe kat72AF.tmp PID 916 wrote to memory of 2884 916 65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe kat72AF.tmp PID 916 wrote to memory of 2884 916 65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe kat72AF.tmp PID 2884 wrote to memory of 3116 2884 kat72AF.tmp cmd.exe PID 2884 wrote to memory of 3116 2884 kat72AF.tmp cmd.exe PID 2884 wrote to memory of 3116 2884 kat72AF.tmp cmd.exe PID 3116 wrote to memory of 4948 3116 cmd.exe timeout.exe PID 3116 wrote to memory of 4948 3116 cmd.exe timeout.exe PID 3116 wrote to memory of 4948 3116 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe"C:\Users\Admin\AppData\Local\Temp\65bfd78363839d560d5e3943a28f5f25f9efaba57cbe5d596b5ed25ccad7bdd6.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat72AF.tmpC:\Users\Admin\AppData\Local\Temp\kat72AF.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\kat72AF.tmp" & rd /s /q "C:\ProgramData\GCGDHJDAFHJE" & 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\kat72AF.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/916-10-0x0000000000400000-0x00000000005A9000-memory.dmpFilesize
1.7MB
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memory/916-2-0x0000000003FE0000-0x00000000040F3000-memory.dmpFilesize
1.1MB
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memory/916-0-0x0000000002310000-0x0000000002311000-memory.dmpFilesize
4KB
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memory/2884-25-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2884-9-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2884-4-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2884-24-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2884-8-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2884-27-0x0000000024DF0000-0x000000002504F000-memory.dmpFilesize
2.4MB
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memory/2884-42-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2884-43-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2884-59-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2884-60-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2884-71-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2884-72-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2884-75-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB