Analysis
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max time kernel
147s -
max time network
149s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
07-06-2024 05:54
Static task
static1
Behavioral task
behavioral1
Sample
ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe
Resource
win10v2004-20240508-en
General
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Target
ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe
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Size
2.9MB
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MD5
9ac773e8eafc40e03b5f33a636f41a09
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SHA1
fb540e2ed2fbfeb3806dabb18d5c0aec612e3069
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SHA256
ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f
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SHA512
c96ecabd78d7f2d536874eb5722ec6a805e051414535ae4c4fd792fcd36f9a491ddabc86fc80ccf5fa4bcdd50464822de6ab0d8272016f591975c2a988a81bba
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SSDEEP
49152:rtpSxptE1AKnCdMS4cdR/z4+UVi4e9Crn:r/4nE1dCSKxx4e9Cb
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 8 IoCs
Processes:
resource yara_rule behavioral2/memory/3920-2-0x0000000004350000-0x00000000044B6000-memory.dmp family_vidar_v7 behavioral2/memory/2244-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2244-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2244-9-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2244-15-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2244-32-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2244-33-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/2244-34-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4D55.tmppid process 2244 kat4D55.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:
ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exedescription pid process target process PID 3920 set thread context of 2244 3920 ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe kat4D55.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4D55.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4D55.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4D55.tmppid process 2244 kat4D55.tmp 2244 kat4D55.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exedescription pid process target process PID 3920 wrote to memory of 2244 3920 ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe kat4D55.tmp PID 3920 wrote to memory of 2244 3920 ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe kat4D55.tmp PID 3920 wrote to memory of 2244 3920 ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe kat4D55.tmp PID 3920 wrote to memory of 2244 3920 ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe kat4D55.tmp PID 3920 wrote to memory of 2244 3920 ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe kat4D55.tmp PID 3920 wrote to memory of 2244 3920 ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe kat4D55.tmp PID 3920 wrote to memory of 2244 3920 ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe kat4D55.tmp PID 3920 wrote to memory of 2244 3920 ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe kat4D55.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe"C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3920 -
C:\Users\Admin\AppData\Local\Temp\kat4D55.tmpC:\Users\Admin\AppData\Local\Temp\kat4D55.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2244
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f