Analysis
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max time kernel
139s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
21-05-2024 16:30
Static task
static1
Behavioral task
behavioral1
Sample
c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe
Resource
win10v2004-20240508-en
General
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Target
c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe
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Size
2.1MB
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MD5
c19fa538bced1969f1316bcebcf16468
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SHA1
1ce8f14d436741f3d09fb7493d8c20d068cf3b48
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SHA256
c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de
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SHA512
262832017398a760ef43cf9d60bda3737cf22494cd82e400dbb9b3e32f9c8e1dddd51c35314618ff11914699f2b22f7f31528a294f40d919b439bab58acaa599
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SSDEEP
49152:N6uDuaS9refegJtTF+TxMoxc1TU+j+dAzGwlrh:N6uKb9zgtIuoITsdZ
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 8 IoCs
Processes:
resource yara_rule behavioral1/memory/3144-1-0x00000000040D0000-0x0000000004219000-memory.dmp family_vidar_v7 behavioral1/memory/1044-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1044-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1044-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1044-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1044-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1044-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1044-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
katEEC5.tmppid process 1044 katEEC5.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:
c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exedescription pid process target process PID 3144 set thread context of 1044 3144 c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe katEEC5.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
katEEC5.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString katEEC5.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
katEEC5.tmppid process 1044 katEEC5.tmp 1044 katEEC5.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exedescription pid process target process PID 3144 wrote to memory of 1044 3144 c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe katEEC5.tmp PID 3144 wrote to memory of 1044 3144 c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe katEEC5.tmp PID 3144 wrote to memory of 1044 3144 c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe katEEC5.tmp PID 3144 wrote to memory of 1044 3144 c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe katEEC5.tmp PID 3144 wrote to memory of 1044 3144 c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe katEEC5.tmp PID 3144 wrote to memory of 1044 3144 c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe katEEC5.tmp PID 3144 wrote to memory of 1044 3144 c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe katEEC5.tmp PID 3144 wrote to memory of 1044 3144 c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe katEEC5.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe"C:\Users\Admin\AppData\Local\Temp\c13ef999938cf7f303e128185120c1ee4c885ea5b8543295925d2ab98b4e41de.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\katEEC5.tmpC:\Users\Admin\AppData\Local\Temp\katEEC5.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4376,i,15140928051103392835,1612840580898364401,262144 --variations-seed-version --mojo-platform-channel-handle=4080 /prefetch:81⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\katEEC5.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1044-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1044-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1044-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1044-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1044-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1044-20-0x000000001DBE0000-0x000000001DE3F000-memory.dmpFilesize
2.4MB
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memory/1044-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1044-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3144-0-0x0000000002380000-0x0000000002381000-memory.dmpFilesize
4KB
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memory/3144-1-0x00000000040D0000-0x0000000004219000-memory.dmpFilesize
1.3MB
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memory/3144-10-0x0000000000400000-0x000000000061C000-memory.dmpFilesize
2.1MB