Analysis
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max time kernel
150s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
02-11-2024 06:30
Static task
static1
Behavioral task
behavioral1
Sample
2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exe
Resource
win10v2004-20241007-en
General
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Target
2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exe
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Size
68KB
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MD5
c5bde157b84f95981f953b0ee3a5fb56
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SHA1
f281c5533e0ff9828691b81eca2746ac87c08d28
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SHA256
4fe93cc18b9fea033675cdf940093874cf76edde5165e1466572250d45e66dc5
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SHA512
eb342ed2f6af329f3f839fad74a5e1f79c6cd04f9c50b60b769867838d59b6b721dfe51dc07791ef394997bd8c8ea8c5636edc0563f9cec22c5d033fdc0447e0
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLEK:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7S
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
hurok.exepid process 2084 hurok.exe -
Loads dropped DLL 1 IoCs
Processes:
2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exepid process 2612 2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exehurok.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hurok.exe -
Suspicious use of UnmapMainImage 2 IoCs
Processes:
2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exehurok.exepid process 2612 2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exe 2084 hurok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exedescription pid process target process PID 2612 wrote to memory of 2084 2612 2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exe hurok.exe PID 2612 wrote to memory of 2084 2612 2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exe hurok.exe PID 2612 wrote to memory of 2084 2612 2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exe hurok.exe PID 2612 wrote to memory of 2084 2612 2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exe hurok.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-02_c5bde157b84f95981f953b0ee3a5fb56_cryptolocker.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2612 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
PID:2084
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
68KB
MD51aae07fac1a7b16a1857874d93680e51
SHA161e5906cf1177cf3d9c072bd55c7bcf525dfc8e5
SHA256571230763f64336e78d9fb6a6f844a6e9c88d6ff8f6fa584e2e042d2d1731933
SHA5126a5ae3780f1097a29015b721e1f808dd4bc2915e280d44e6ea3a490cfb9e5562488cff1a214d6a735348926c94e4579504e03b936fb0bf5a2382b39ae9cac20a