Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system -
submitted
02/10/2024, 03:06
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-02_fb4c7808a22a86f19ec68422aa7a2004_cryptolocker.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2024-10-02_fb4c7808a22a86f19ec68422aa7a2004_cryptolocker.exe
Resource
win10v2004-20240802-en
General
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Target
2024-10-02_fb4c7808a22a86f19ec68422aa7a2004_cryptolocker.exe
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Size
70KB
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MD5
fb4c7808a22a86f19ec68422aa7a2004
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SHA1
ab8537a02c0a2536a334ae80c2360c74b10af453
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SHA256
32f6fb46c40d26fcd162b5d27c350298b654f04c1c7588b3f1b06bdf27880a28
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SHA512
97089656c6bac9ffd2331d6dc0257d4e769eaae51e271151a83639f6dd7aa43ccf7558edc75f800419981381e63ec8136088190f47e7dedab478571583930d28
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLEbM:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7I
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 2696 hurok.exe -
Loads dropped DLL 1 IoCs
pid Process 2848 2024-10-02_fb4c7808a22a86f19ec68422aa7a2004_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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-10-02_fb4c7808a22a86f19ec68422aa7a2004_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hurok.exe -
Suspicious use of UnmapMainImage 2 IoCs
pid Process 2848 2024-10-02_fb4c7808a22a86f19ec68422aa7a2004_cryptolocker.exe 2696 hurok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2848 wrote to memory of 2696 2848 2024-10-02_fb4c7808a22a86f19ec68422aa7a2004_cryptolocker.exe 31 PID 2848 wrote to memory of 2696 2848 2024-10-02_fb4c7808a22a86f19ec68422aa7a2004_cryptolocker.exe 31 PID 2848 wrote to memory of 2696 2848 2024-10-02_fb4c7808a22a86f19ec68422aa7a2004_cryptolocker.exe 31 PID 2848 wrote to memory of 2696 2848 2024-10-02_fb4c7808a22a86f19ec68422aa7a2004_cryptolocker.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-02_fb4c7808a22a86f19ec68422aa7a2004_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-02_fb4c7808a22a86f19ec68422aa7a2004_cryptolocker.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2848 -
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:2696
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
70KB
MD5abe8c7c2554c9dc452757da2068be932
SHA1d3f2b97e14145891d94b1a17225caa5e9b6cfb77
SHA2560e4906c17d6ee82de43efd043e95e9167fe8453c59d3f24098ebc9ead5dea2bf
SHA512858b0db7cec0fd8f64dee55189658dcd278c1d675319ac26d06774b3a14f32447b5afe63a1748f5e99355c355a9d8bdd4651fba3ef8044277f964323be1dba83