Analysis
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max time kernel
151s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
06/06/2024, 21:39
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe
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Size
45KB
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MD5
f1432583ed741649cb501945b93bdcdc
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SHA1
ad3584cd6624e4218044f4cdef969f619af32da8
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SHA256
b75d5910b1f48d41bed8a29967091c7bb97c3dfbe4d8c4e14b5a78308d53ee97
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SHA512
9cc9d80ea99f9b581b5f4d9171505dce0dcc4701efeb0bca73635f69bca71b3c63814a190d4f724d3be795f536347d3f3c174194125adc999b76761ab22a2f44
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SSDEEP
768:bao/2n1TCraU6GD1a4X1XOQ69zbjlAAX5e9zz:bF/y2lFizbR9Xwzz
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0008000000023272-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3996 rewok.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 5064 wrote to memory of 3996 5064 2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe 91 PID 5064 wrote to memory of 3996 5064 2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe 91 PID 5064 wrote to memory of 3996 5064 2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5064 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
PID:3996
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3684 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:81⤵PID:4168
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
45KB
MD5ebf17f8bfb564936eab4dc5794406f54
SHA1c80f071c92a45004b6a0e0b7827fa0d2670d4538
SHA256f9ab409c2f4156e7f6963bb275a92a8967791125671fb490337141ec6cceb075
SHA5121d6345c4dcc9a0356053cc417d0b512acb11d8afa7afc8c272af0dfcaa1ca7f238c7aae5da2c580c8059692a1bb5f51eb8a0ca9470718d5626750213d97079a8