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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
28/02/2024, 16:38
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe
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Size
83KB
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MD5
449a114f8b7257cd1e6c199b89749820
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SHA1
9cfe638231d30acc771de6501dab20bd01dd0bb5
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SHA256
a62e10ba48930ba338e5b47dfec4dbfc61c577fb0013e05ebe6e842d93e86978
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SHA512
ec88a09dcbee53438cfe425f6ba1d2392c1dae9ace4514eb92003fd97d633ed5baa843429a4d2024ac318a06986d2ca4a85a188e038f3d0b6985d43156f51e6d
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SSDEEP
1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMAe59:TCjsIOtEvwDpj5HE/OUHnSMF
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4956-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0009000000023231-13.dat CryptoLocker_rule2 behavioral2/memory/4956-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4968-52-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/4956-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0009000000023231-13.dat CryptoLocker_set1 behavioral2/memory/4956-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/memory/4968-52-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation 2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation misid.exe -
Executes dropped EXE 1 IoCs
pid Process 4968 misid.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 4956 wrote to memory of 4968 4956 2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe 89 PID 4956 wrote to memory of 4968 4956 2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe 89 PID 4956 wrote to memory of 4968 4956 2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4956 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:4968
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
83KB
MD5760b7946a426106701c5d47ced687c21
SHA11a5916df6825efbd3c5f33edb739cf7b3fc6c490
SHA25664389b072a36d85c22ffaf7d811e5b5b52aaa906b1ba3be73fb6034ef66a870c
SHA51255a7fc0a7b39bc6fbcaca20e98326c430f9071932dc20cadb8c7e9cfa564dde638323856047ec9758007e2a8047a19b4e75f6cc5de702f444e23106177079eaa