Analysis
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max time kernel
134s -
max time network
104s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 09:40
Static task
static1
Behavioral task
behavioral1
Sample
0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe
Resource
win10v2004-20240426-en
General
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Target
0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe
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Size
2.0MB
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MD5
b1efe73af7d3b37fdd6c2e902e4b9312
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SHA1
34d5a6d1fb2ec54c9d371e2fc0072b6bdd0ae404
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SHA256
0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b
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SHA512
3ff1fbfe390f15d743f4981a923dde32f8a1b85f2956e08bd959943bf995fc37116c6b6b44a32567bd4d505a1f92f67563b0db03abf2067ccdc9dab7a98b485d
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SSDEEP
49152:s4K3x1vUSJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18StIuoITsdZ
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 behavioral1/memory/4044-1-0x0000000004050000-0x0000000004199000-memory.dmp family_vidar_v7 behavioral1/memory/1392-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1392-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1392-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1392-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1392-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1392-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1392-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat348D.tmppid process 1392 kat348D.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:
0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exedescription pid process target process PID 4044 set thread context of 1392 4044 0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe kat348D.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat348D.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat348D.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat348D.tmppid process 1392 kat348D.tmp 1392 kat348D.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exedescription pid process target process PID 4044 wrote to memory of 1392 4044 0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe kat348D.tmp PID 4044 wrote to memory of 1392 4044 0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe kat348D.tmp PID 4044 wrote to memory of 1392 4044 0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe kat348D.tmp PID 4044 wrote to memory of 1392 4044 0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe kat348D.tmp PID 4044 wrote to memory of 1392 4044 0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe kat348D.tmp PID 4044 wrote to memory of 1392 4044 0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe kat348D.tmp PID 4044 wrote to memory of 1392 4044 0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe kat348D.tmp PID 4044 wrote to memory of 1392 4044 0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe kat348D.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe"C:\Users\Admin\AppData\Local\Temp\0b28575bc27a80730724775c48f7a32bb95851c5f44960d87fa8848ea1e20d5b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat348D.tmpC:\Users\Admin\AppData\Local\Temp\kat348D.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\kat348D.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1392-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1392-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1392-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1392-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1392-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1392-17-0x000000001B7E0000-0x000000001BA3F000-memory.dmpFilesize
2.4MB
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memory/1392-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1392-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4044-0-0x0000000002370000-0x0000000002371000-memory.dmpFilesize
4KB
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memory/4044-1-0x0000000004050000-0x0000000004199000-memory.dmpFilesize
1.3MB
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memory/4044-6-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB