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Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
29/02/2024, 03:45
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe
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Size
53KB
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MD5
67781002f7b29b76a50c9b8262ff79f5
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SHA1
ee98e5b0231e73feb33998113b01ddf23e8e8a33
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SHA256
afc334399b3e3b44fb28b0f069c134ccf4149da03e4e187fe3036b40e1061d50
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SHA512
2f5db463ce9002396700ddcf2c31d40db89770a583ecdafc20d60e0ac176d3946cde7a2b2538b02e3c024085cc20aafc4166326f44c0bea0065fef2f1407b0e5
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SSDEEP
768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTbmhTY:bIDOw9a0DwitDZzcTh
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x00080000000232f6-12.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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation 2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3052 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 4140 wrote to memory of 3052 4140 2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe 88 PID 4140 wrote to memory of 3052 4140 2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe 88 PID 4140 wrote to memory of 3052 4140 2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-29_67781002f7b29b76a50c9b8262ff79f5_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4140 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:3052
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
53KB
MD5c65d5bbe45e9cf2d5a3b3c3c36b82dac
SHA11b49976d2bc9ba4860956394798a24395e7a1157
SHA2565de0c1f271bb738e56111716815eb7656c0e3a9383499121d5aaabf9a416e8c1
SHA512288921a02f982e437483d0e28faefe770964c52b5004259193091a8ddef9c48a7e618a6517c4a073b0eef0e9751d8878984a95b4cc7b2c3a80b3dd46b257512c