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Analysis
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max time kernel
150s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
28/05/2024, 01:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe
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Size
31KB
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MD5
3e4484ff7ae9201d33b4db6767db8832
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SHA1
2ce091b1254e7e477a59125905e59021d5d36673
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SHA256
293e6bcf5cc5b6fd823c6b19add8afe6c8cc5667ee0af3dadf44a8402db87e58
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SHA512
acb995a6d752262fff2ecb21ff79cc4581e66fc4dac3e150fdd0a0120e110591c241996f612a3e393f223af8f25aba9b06f5795b80ff67877c69bb9217d4fcc2
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SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznum+U8Ss87vh3:b/yC4GyNM01GuQMNXum+NSn3
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000800000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1592 retln.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 228 wrote to memory of 1592 228 2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe 83 PID 228 wrote to memory of 1592 228 2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe 83 PID 228 wrote to memory of 1592 228 2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:228 -
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
PID:1592
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
31KB
MD5e46cc3d1dabb4928b2abcf056fc41b6f
SHA1be3cbcaa5c3d1019ab1801f789f3f23d20067c40
SHA25658d6dda9aa697d05e4a337d98cf72818fd95b846bef15f4a7985495de483cecc
SHA512f772df1ac9623a0406dab9532721d74afc0b9d97df37dd5c4578e58237cfb55f261f32dfe7d4d4bf559e299d8c4889b2339ea6171c3495f42516c7135aa13e0c