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Analysis
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max time kernel
151s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
23/09/2023, 10:57
Static task
static1
Behavioral task
behavioral1
Sample
2023-08-26_1ff59ec3a101a5a0b23f989d887573dc_cryptolocker_JC.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
2023-08-26_1ff59ec3a101a5a0b23f989d887573dc_cryptolocker_JC.exe
Resource
win10v2004-20230915-en
General
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Target
2023-08-26_1ff59ec3a101a5a0b23f989d887573dc_cryptolocker_JC.exe
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Size
59KB
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MD5
1ff59ec3a101a5a0b23f989d887573dc
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SHA1
26b077e5b63e6d6ad45189918ec56013422bfff8
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SHA256
cbd7f6295daf3341817303ed7976c45f04fb5fa14043b9d489a6c19d71c93ce0
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SHA512
d3962bbae00807301ecdb996dc8ba3b9805148c599671814f4b9215f6970abd06fe915355f25fa7335791060f927078a4c341d02802589a3b139c62ce5b187a7
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293w:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7e
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 2452 hurok.exe -
Loads dropped DLL 1 IoCs
pid Process 2128 2023-08-26_1ff59ec3a101a5a0b23f989d887573dc_cryptolocker_JC.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 2128 2023-08-26_1ff59ec3a101a5a0b23f989d887573dc_cryptolocker_JC.exe 2452 hurok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2128 wrote to memory of 2452 2128 2023-08-26_1ff59ec3a101a5a0b23f989d887573dc_cryptolocker_JC.exe 28 PID 2128 wrote to memory of 2452 2128 2023-08-26_1ff59ec3a101a5a0b23f989d887573dc_cryptolocker_JC.exe 28 PID 2128 wrote to memory of 2452 2128 2023-08-26_1ff59ec3a101a5a0b23f989d887573dc_cryptolocker_JC.exe 28 PID 2128 wrote to memory of 2452 2128 2023-08-26_1ff59ec3a101a5a0b23f989d887573dc_cryptolocker_JC.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2023-08-26_1ff59ec3a101a5a0b23f989d887573dc_cryptolocker_JC.exe"C:\Users\Admin\AppData\Local\Temp\2023-08-26_1ff59ec3a101a5a0b23f989d887573dc_cryptolocker_JC.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2128 -
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:2452
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60KB
MD5c014a87bca544a7b18e49271c4fe547c
SHA141f878fa3ef7fc855b2afb359684d61b2fbb7018
SHA256e44df987a2cf72a73631dc04590612f520221c6264f5c131444dedc1b1b142d5
SHA51263993954bb56a383253a089f6caeb8a6a087850790fbce99bb1c2d46045ed4b3f0c540f62b82c76631155eed5b89d617adedf7da2c20e69ecca63199b61a7919
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Filesize
60KB
MD5c014a87bca544a7b18e49271c4fe547c
SHA141f878fa3ef7fc855b2afb359684d61b2fbb7018
SHA256e44df987a2cf72a73631dc04590612f520221c6264f5c131444dedc1b1b142d5
SHA51263993954bb56a383253a089f6caeb8a6a087850790fbce99bb1c2d46045ed4b3f0c540f62b82c76631155eed5b89d617adedf7da2c20e69ecca63199b61a7919
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Filesize
60KB
MD5c014a87bca544a7b18e49271c4fe547c
SHA141f878fa3ef7fc855b2afb359684d61b2fbb7018
SHA256e44df987a2cf72a73631dc04590612f520221c6264f5c131444dedc1b1b142d5
SHA51263993954bb56a383253a089f6caeb8a6a087850790fbce99bb1c2d46045ed4b3f0c540f62b82c76631155eed5b89d617adedf7da2c20e69ecca63199b61a7919