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Analysis
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max time kernel
150s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
15/04/2024, 09:42
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-15_49953930d0c4b09b9e3a72143d984577_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-04-15_49953930d0c4b09b9e3a72143d984577_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-15_49953930d0c4b09b9e3a72143d984577_cryptolocker.exe
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Size
54KB
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MD5
49953930d0c4b09b9e3a72143d984577
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SHA1
aff32fefad72309ca8036e5dc6f2d096ac941e41
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SHA256
ec28076a58f45923cb9e14e191c96a900e99d26412fd176016e405d7baa7ad72
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SHA512
ae25a6b3588b0405922516c284113ade519073b334a29d92863cb739fcc24d4f738c93dbb7650b5c5e7474c6bbf6e111d451de22bfe765f2df2d5e3632567729
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SSDEEP
768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTb8puq:bIDOw9a0DwitDZzcTLq
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000300000001e97c-12.dat 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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation 2024-04-15_49953930d0c4b09b9e3a72143d984577_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4136 lossy.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 4216 wrote to memory of 4136 4216 2024-04-15_49953930d0c4b09b9e3a72143d984577_cryptolocker.exe 85 PID 4216 wrote to memory of 4136 4216 2024-04-15_49953930d0c4b09b9e3a72143d984577_cryptolocker.exe 85 PID 4216 wrote to memory of 4136 4216 2024-04-15_49953930d0c4b09b9e3a72143d984577_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-15_49953930d0c4b09b9e3a72143d984577_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-15_49953930d0c4b09b9e3a72143d984577_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4216 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:4136
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
54KB
MD5d8a0a525818b31c0ffc1e85b584c2b5b
SHA1f38cc125701566f3f58d876f798fac408e986836
SHA2562ebc2c76bf048b3814ecc0422296c5a7fc914b072fbac4d39a7a5a2ff7ad5c3c
SHA5127ad8d97b5af2c4ff5d842f257baa03fbc032def26de9d2b2f3a757d08e3ad111628292b2f9679f6ed9c03c50218e9c802cb82319e367c6b7c72e9fe3bb9d7395