Analysis
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max time kernel
151s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
12-02-2024 17:51
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-12_d16910d9df6b067699dd17acf8e71cd2_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-02-12_d16910d9df6b067699dd17acf8e71cd2_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-12_d16910d9df6b067699dd17acf8e71cd2_cryptolocker.exe
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Size
52KB
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MD5
d16910d9df6b067699dd17acf8e71cd2
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SHA1
39184b3299ef5e5b63fe9a0c64f1ceba52e063ac
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SHA256
dd561082ccb7a20aa5e1214f609cb7de50c4c320f440417953677229fbbe44ee
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SHA512
719a885825087ac66286c5c6b03a35000b80c685e086ba01e146300fae6138525f6862951497a2d68378d3fda318eb937e50fcb38a12d600298cf7931329b7ff
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SSDEEP
768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTbqjm:bIDOw9a0DwitDZzcTmm
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\lossy.exe CryptoLocker_rule2 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-02-12_d16910d9df6b067699dd17acf8e71cd2_cryptolocker.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 2024-02-12_d16910d9df6b067699dd17acf8e71cd2_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
lossy.exepid process 3472 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
Processes:
2024-02-12_d16910d9df6b067699dd17acf8e71cd2_cryptolocker.exedescription pid process target process PID 220 wrote to memory of 3472 220 2024-02-12_d16910d9df6b067699dd17acf8e71cd2_cryptolocker.exe lossy.exe PID 220 wrote to memory of 3472 220 2024-02-12_d16910d9df6b067699dd17acf8e71cd2_cryptolocker.exe lossy.exe PID 220 wrote to memory of 3472 220 2024-02-12_d16910d9df6b067699dd17acf8e71cd2_cryptolocker.exe lossy.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-12_d16910d9df6b067699dd17acf8e71cd2_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_d16910d9df6b067699dd17acf8e71cd2_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:220 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:3472
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
52KB
MD57402a33727595f6999eef6cd79a8520c
SHA1618f685a6529aad025587812ba646a5485b655cd
SHA25696c3d37f650cbb37a085c42af0333f9335508db302a4509d7bc509b82e6177f9
SHA5124258ed37ef649a4a0ef332d189a9531b7ba9eca3b994dc3ad45c9d62b9e09246668d4a5be00f581238bebd2e9dc88f6675ac051e5a95d55e6190d26ee2bb0c4b