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Analysis
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max time kernel
150s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
30/04/2024, 12:33
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe
Resource
win10v2004-20240419-en
General
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Target
2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe
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Size
43KB
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MD5
30a8b65216b63728f9e97b1a33ecd63d
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SHA1
b360b1997ec174eac75cc67b00ebe5461c6f3132
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SHA256
8386743c8c51fe2aaff0c11bd0b47ee54a42f0e4510e2853f43547f798602077
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SHA512
d786b47c6494cee72829af4256541efed6e110d464ef105b84a80529beb48e88a2e9a3bb8afe95edb2ea92174e87c7e4242372654b9023d3f739532b5a49161f
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SSDEEP
768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqp:bc/y2lkF0+Beqp
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000b000000023bd2-12.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-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation 2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1504 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 4396 wrote to memory of 1504 4396 2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe 83 PID 4396 wrote to memory of 1504 4396 2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe 83 PID 4396 wrote to memory of 1504 4396 2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4396 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
PID:1504
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
43KB
MD593db196f0a1ef1c6f60a3942ebaa6a33
SHA1ae0d9b9a720ca7229461f79e08d6bea638218635
SHA256b677485e6c3050f42d815ea23ff89335356c0ec0f0b227084891b8e5b6843200
SHA5125316f6f71e368f73b44ea9fc5133159bcd33383a008b9187c6646345515dfdccb5348d2600098621e30643e4855eb3e10a1f1f0365cb8333bc587387bb2db82b