Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
16-04-2024 04:33
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-16_1cc3fca656b359df250af5eea3ddd0b0_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-16_1cc3fca656b359df250af5eea3ddd0b0_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-16_1cc3fca656b359df250af5eea3ddd0b0_cryptolocker.exe
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Size
44KB
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MD5
1cc3fca656b359df250af5eea3ddd0b0
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SHA1
6340b059c8c7da69f764eb4cbbb8aad90f1f3c16
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SHA256
63065f9fbf7b6b0432c352baebbdab3c9d22301b0037692ae5cb7865008005be
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SHA512
07c068132d52ce649cbdef8da0d91c60dbc8aecc6a5dc7cb8c7c3c40cc807bafc9cf0daad20bc1958d136bde37b29a21b13d9566df01cfcfbd2bf11b5ab33053
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SSDEEP
768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhqFkvv:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+C
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1304-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000300000001e9b1-13.dat CryptoLocker_rule2 behavioral2/memory/1304-18-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4624-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/1304-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000300000001e9b1-13.dat CryptoLocker_set1 behavioral2/memory/1304-18-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/memory/4624-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation 2024-04-16_1cc3fca656b359df250af5eea3ddd0b0_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4624 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1304 wrote to memory of 4624 1304 2024-04-16_1cc3fca656b359df250af5eea3ddd0b0_cryptolocker.exe 86 PID 1304 wrote to memory of 4624 1304 2024-04-16_1cc3fca656b359df250af5eea3ddd0b0_cryptolocker.exe 86 PID 1304 wrote to memory of 4624 1304 2024-04-16_1cc3fca656b359df250af5eea3ddd0b0_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-16_1cc3fca656b359df250af5eea3ddd0b0_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-16_1cc3fca656b359df250af5eea3ddd0b0_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1304 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4624
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
44KB
MD5fd9166b7c788ced4315effc1ebb30c14
SHA1eeb4344906c8459fdbceb49953428bbc980a83b2
SHA256e583aea257c7b25ee3620407e2b53ba043717ad01cf4b6399855b02a01736773
SHA51256df2b0f8c7bd6f1ff6cdcdd9e5b26b33797b055f62c16f1b9f15d7c29d2c223797639c941027e1935826420de8093f39d15f897b81474ffd7c9bb6cdd31ad57