Analysis
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max time kernel
91s -
max time network
93s -
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 07:47
Static task
static1
Behavioral task
behavioral1
Sample
b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe
Resource
win10v2004-20240508-en
General
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Target
b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe
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Size
2.9MB
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MD5
8c208f9f98b61ded6654ce52e374330c
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SHA1
330a4461c5659db24bc691a08b87ecbcd4e98e6b
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SHA256
b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94
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SHA512
8019f348874bd80698b6e1fa9e46f0f24d323b309d52c8a00d4c0fa8e7fda4dfbebbe9f39f706ffca66ddc6ebc2609510c49e124476e24d8ecf8c330af604737
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SSDEEP
49152:rtpSxptE1AKnCBMS4cdR/z4+UVi4e9Crn:r/4nE1dCmKxx4e9Cb
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 9 IoCs
Processes:
resource yara_rule behavioral2/memory/4748-3-0x0000000004160000-0x00000000042C6000-memory.dmp family_vidar_v7 behavioral2/memory/4268-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4268-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4268-10-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4268-15-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4268-16-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4268-33-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4268-49-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/4268-51-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat80E8.tmppid process 4268 kat80E8.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:
b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exedescription pid process target process PID 4748 set thread context of 4268 4748 b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe kat80E8.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat80E8.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat80E8.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat80E8.tmppid process 4268 kat80E8.tmp 4268 kat80E8.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exedescription pid process target process PID 4748 wrote to memory of 4268 4748 b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe kat80E8.tmp PID 4748 wrote to memory of 4268 4748 b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe kat80E8.tmp PID 4748 wrote to memory of 4268 4748 b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe kat80E8.tmp PID 4748 wrote to memory of 4268 4748 b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe kat80E8.tmp PID 4748 wrote to memory of 4268 4748 b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe kat80E8.tmp PID 4748 wrote to memory of 4268 4748 b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe kat80E8.tmp PID 4748 wrote to memory of 4268 4748 b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe kat80E8.tmp PID 4748 wrote to memory of 4268 4748 b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe kat80E8.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe"C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4748 -
C:\Users\Admin\AppData\Local\Temp\kat80E8.tmpC:\Users\Admin\AppData\Local\Temp\kat80E8.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4268
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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