Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
24/01/2024, 20:22
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe
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Size
61KB
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MD5
163e72755be7a9201537b6407fe05460
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SHA1
1a3998e792cebbd5467182d53686f5916b2f1fb1
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SHA256
b91e25cae10429256e1b25a2990db4401a93d7b7a25201b6a95385410793e29f
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SHA512
a855026dcd3a9d2637a66102f2c357ac1fdca64376cd062eeb4bc6c81804b719ec5a8e3b42a81811db8f13894661118279639aaaeb72a3b916a82950f15fcf6d
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299S:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7K
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000c000000012327-10.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral1/files/0x000c000000012327-10.dat CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
pid Process 2384 hurok.exe -
Loads dropped DLL 1 IoCs
pid Process 1992 2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of UnmapMainImage 2 IoCs
pid Process 1992 2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe 2384 hurok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1992 wrote to memory of 2384 1992 2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe 28 PID 1992 wrote to memory of 2384 1992 2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe 28 PID 1992 wrote to memory of 2384 1992 2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe 28 PID 1992 wrote to memory of 2384 1992 2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1992 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2384
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
61KB
MD5f6890c70dadd541aca06f394af0205d6
SHA1f10a67c0c0320b81d8546d6761ad6f1f4be75ee3
SHA256bd2ddb5fe45da9a636b2f71394728c6d5a9f8f878b1fd057d20a82072f563b89
SHA51260a075d05ac8b4a07e3da18fb495135ac1882448d43111f669e33524545d87ab22a28495fa230ddd7960d308ab459e2fd5a4d7d86d5f3e4c7e1290944cd31f20