Analysis
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max time kernel
150s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
06/06/2024, 21:37
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-06_d96edcbfe6c68fefb078b97efb388876_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-06_d96edcbfe6c68fefb078b97efb388876_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-06_d96edcbfe6c68fefb078b97efb388876_cryptolocker.exe
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Size
33KB
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MD5
d96edcbfe6c68fefb078b97efb388876
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SHA1
c23802afb3ec2371e11ea71af9249f32f855e11a
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SHA256
9b1c41d6033da0c8d0c54eeb81a85d407ffa1c75460d50ea57d39b6754049cab
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SHA512
f94311f80015a1e66f129273deee683b2757dc3e3e3dc668e6156a5410c9c2b2afbfeed2991d3e5b5beb6a2840bc3782eae41430ae50f3fc9aeafc49d0167707
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SSDEEP
384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvxC:bG74zYcgT/Ekd0ryfjkQ
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/4940-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00090000000233f8-13.dat CryptoLocker_rule2 behavioral2/memory/1112-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4940-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1112-27-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 -
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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-06-06_d96edcbfe6c68fefb078b97efb388876_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1112 hasfj.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 4940 wrote to memory of 1112 4940 2024-06-06_d96edcbfe6c68fefb078b97efb388876_cryptolocker.exe 82 PID 4940 wrote to memory of 1112 4940 2024-06-06_d96edcbfe6c68fefb078b97efb388876_cryptolocker.exe 82 PID 4940 wrote to memory of 1112 4940 2024-06-06_d96edcbfe6c68fefb078b97efb388876_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-06_d96edcbfe6c68fefb078b97efb388876_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-06_d96edcbfe6c68fefb078b97efb388876_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4940 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:1112
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
33KB
MD5f7436186c2049f49faac04a2b6c63e26
SHA1c4afb680357e579ba7172331f3a692056132b812
SHA25667c592e441323b9ebba8d74310ee5aba4c2f4e090b067d839b726684eaff41da
SHA512c4ee5f8f310f56f884a4b065036309020148645969ac6570d0cd07319e1ff81575cc6802efc5a59d367cb099d0b80d373619526ec77e6d00579468f81e2acc45