Analysis
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max time kernel
149s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
11/06/2024, 03:20
Static task
static1
Behavioral task
behavioral1
Sample
2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe
Resource
win10v2004-20240508-en
General
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Target
2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe
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Size
1.7MB
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MD5
0d51c0536fec2db4bc13b40fc3f7679e
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SHA1
6441f13a897474503ff8d20a5748b3ef926a7863
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SHA256
2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4
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SHA512
e3a9e59f0f2ebe8e2deda08060b19d083f566b21916d0fa49919f16ecfd9a6c85a00376172d84187336dd4d7545099e541ede988a17cb84bcc9a9638c54c11f7
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SSDEEP
24576:JoZYQkmdrf+IUfMxVVtes12FxwojKr98YGeGG9iH:JPYxdUkxVVChjHZQsH
Malware Config
Extracted
stealc
Extracted
vidar
https://t.me/r8z0l
https://steamcommunity.com/profiles/76561199698764354
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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 13 IoCs
resource yara_rule behavioral2/memory/1052-2-0x0000000004030000-0x0000000004140000-memory.dmp family_vidar_v7 behavioral2/memory/4244-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4244-10-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4244-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4244-15-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4244-16-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4244-33-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4244-34-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4244-50-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4244-51-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4244-62-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4244-63-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4244-64-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
pid Process 4244 kat4E20.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
description pid Process procid_target PID 1052 set thread context of 4244 1052 2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe 78 -
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.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4E20.tmp -
Delays execution with timeout.exe 1 IoCs
pid Process 1992 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4244 kat4E20.tmp 4244 kat4E20.tmp 4244 kat4E20.tmp 4244 kat4E20.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 1052 wrote to memory of 4244 1052 2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe 78 PID 1052 wrote to memory of 4244 1052 2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe 78 PID 1052 wrote to memory of 4244 1052 2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe 78 PID 1052 wrote to memory of 4244 1052 2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe 78 PID 1052 wrote to memory of 4244 1052 2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe 78 PID 1052 wrote to memory of 4244 1052 2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe 78 PID 1052 wrote to memory of 4244 1052 2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe 78 PID 1052 wrote to memory of 4244 1052 2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe 78 PID 4244 wrote to memory of 3036 4244 kat4E20.tmp 80 PID 4244 wrote to memory of 3036 4244 kat4E20.tmp 80 PID 4244 wrote to memory of 3036 4244 kat4E20.tmp 80 PID 3036 wrote to memory of 1992 3036 cmd.exe 82 PID 3036 wrote to memory of 1992 3036 cmd.exe 82 PID 3036 wrote to memory of 1992 3036 cmd.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe"C:\Users\Admin\AppData\Local\Temp\2681daf675cddce616eda4c052b9152d539eca52d4dc53cfffdf94d621a448c4.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1052 -
C:\Users\Admin\AppData\Local\Temp\kat4E20.tmpC:\Users\Admin\AppData\Local\Temp\kat4E20.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4244 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4E20.tmp" & rd /s /q "C:\ProgramData\GHJEGCAEGIII" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:3036 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:1992
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f