Analysis
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max time kernel
92s -
max time network
123s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-05-2024 18:51
Static task
static1
Behavioral task
behavioral1
Sample
94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe
Resource
win10v2004-20240508-en
General
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Target
94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe
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Size
1.9MB
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MD5
aedc78cbdd6931087495391487d43ea0
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SHA1
8ee6b1b72ae7d6657ae88bacabc3ba3285452703
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SHA256
94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e
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SHA512
8e67d961f3036d003a43bfe2232badf2b3f0db728edbce813ec0af0929f859e93a4cbc4cad0d8c088165e05ac8a71c44704a56b61b8bac89cc839f7ddb90423d
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SSDEEP
49152:CdKfTn6vmJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnltIuoITsdZ
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 behavioral2/memory/2388-2-0x0000000004040000-0x0000000004189000-memory.dmp family_vidar_v7 behavioral2/memory/2624-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2624-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2624-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2624-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2624-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2624-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2624-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat5004.tmppid process 2624 kat5004.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:
94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exedescription pid process target process PID 2388 set thread context of 2624 2388 94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe kat5004.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat5004.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat5004.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat5004.tmppid process 2624 kat5004.tmp 2624 kat5004.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exedescription pid process target process PID 2388 wrote to memory of 2624 2388 94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe kat5004.tmp PID 2388 wrote to memory of 2624 2388 94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe kat5004.tmp PID 2388 wrote to memory of 2624 2388 94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe kat5004.tmp PID 2388 wrote to memory of 2624 2388 94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe kat5004.tmp PID 2388 wrote to memory of 2624 2388 94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe kat5004.tmp PID 2388 wrote to memory of 2624 2388 94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe kat5004.tmp PID 2388 wrote to memory of 2624 2388 94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe kat5004.tmp PID 2388 wrote to memory of 2624 2388 94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe kat5004.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe"C:\Users\Admin\AppData\Local\Temp\94e3ca39eda6e6d06d7d079e2e651047f8591d4d3c50bb7db16e16da97fda24e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2388 -
C:\Users\Admin\AppData\Local\Temp\kat5004.tmpC:\Users\Admin\AppData\Local\Temp\kat5004.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2624
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat5004.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2388-0-0x0000000002460000-0x0000000002461000-memory.dmpFilesize
4KB
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memory/2388-2-0x0000000004040000-0x0000000004189000-memory.dmpFilesize
1.3MB
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memory/2388-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/2624-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2624-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2624-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2624-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2624-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2624-22-0x000000001B8B0000-0x000000001BB0F000-memory.dmpFilesize
2.4MB
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memory/2624-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2624-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB