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Analysis
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max time kernel
105s -
max time network
193s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
08/02/2023, 04:22
Static task
static1
Behavioral task
behavioral1
Sample
SKlauncher 3.0.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
SKlauncher 3.0.exe
Resource
win10v2004-20220812-en
General
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Target
SKlauncher 3.0.exe
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Size
1.2MB
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MD5
32c7e3347f8e532e675d154eb07f4ccf
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SHA1
5ca004745e2cdab497a7d6ef29c7efb25dc4046d
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SHA256
107bb526c374d6fd9f45317c0c16e83ab50076f2bcd630caf3d6794596fae69b
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SHA512
c82f3a01719f30cbb876a1395fda713ddba07b570bc188515b1b705e54e15a7cca5f71f741d51763f63aa5f40e00df06f63b341ed4db6b1be87b3ee59460dbe2
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SSDEEP
24576:Dh199z42ojP6a7HJlF9eu5XFQZSIZeNGdmEE8H17UBcegl:R9zbgH3euNFQZr/oEE892cfl
Malware Config
Signatures
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Loads dropped DLL 1 IoCs
pid Process 4900 javaw.exe -
Drops file in Program Files directory 12 IoCs
description ioc Process File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\dll\ntdll.pdb javaw.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\jvm.pdb javaw.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\dll\jvm.pdb javaw.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\jvm.pdb javaw.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\ntdll.pdb javaw.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\server\dll\ntdll.pdb javaw.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\ntdll.pdb javaw.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\ntdll.pdb javaw.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\server\jvm.pdb javaw.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\server\dll\jvm.pdb javaw.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\jvm.pdb javaw.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\server\ntdll.pdb javaw.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4900 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 11 IoCs
pid Process 4900 javaw.exe 4900 javaw.exe 4900 EXCEL.EXE 4900 EXCEL.EXE 4900 EXCEL.EXE 4900 EXCEL.EXE 4900 EXCEL.EXE 4900 EXCEL.EXE 4900 EXCEL.EXE 4900 EXCEL.EXE 4900 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2548 wrote to memory of 4900 2548 SKlauncher 3.0.exe 82 PID 2548 wrote to memory of 4900 2548 SKlauncher 3.0.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\SKlauncher 3.0.exe"C:\Users\Admin\AppData\Local\Temp\SKlauncher 3.0.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2548 -
C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe"C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe" -Xms32m -Xmx256m -jar "C:\Users\Admin\AppData\Local\Temp\SKlauncher 3.0.exe"2⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
PID:4900
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C:\Program Files\Microsoft Office\root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\root\Office16\EXCEL.EXE"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4900
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
9KB
MD5697d496ac9f5aaab8ae025322358c61e
SHA12043eac8cdcc2e24b854af1eacd77a5f2a395a27
SHA256a7273a4cf48ab3413f2c186cc95a3367a73ce99f8d45329383219d4cc27003aa
SHA512b6702cd49a3af9f97f697565136f140692af9f8b271e672f2e91c920a23212b778583786f2377078117113647926338614a92c4a2423318b7a21ba2fe3a89838