Analysis
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max time kernel
133s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
25-01-2024 17:37
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exe
Resource
win7-20231129-en
General
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Target
2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exe
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Size
31KB
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MD5
cce764b74e3f188e39e761096c1f7077
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SHA1
7398613dd9f784df796fed4829a8ed409779d9dc
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SHA256
b87f9b1c76c29c034b798b890ee2852111e08f0960cc0a640b3603cd646547a3
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SHA512
97f91a4e7beafada60ccb32121a361f5be73bb0aad4982b68b9f7d6b468d81809eb350e4751124c9056eddcc763d7a640cd18c3c82597ac647a1b619919a554f
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SSDEEP
384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cuM98h:bAvJCYOOvbRPDEgXRcuM98h
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\demka.exe CryptoLocker_rule2 -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exedemka.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation demka.exe -
Executes dropped EXE 1 IoCs
Processes:
demka.exepid process 3028 demka.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:
2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exedescription pid process target process PID 212 wrote to memory of 3028 212 2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exe demka.exe PID 212 wrote to memory of 3028 212 2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exe demka.exe PID 212 wrote to memory of 3028 212 2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exe demka.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_cce764b74e3f188e39e761096c1f7077_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:212 -
C:\Users\Admin\AppData\Local\Temp\demka.exe"C:\Users\Admin\AppData\Local\Temp\demka.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:3028
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
31KB
MD5bcf43ee97ca0ee1fca4c6f9a35faa6a2
SHA1bd5fc8c2df620fc6f0b527550cee1ecb894e003e
SHA2566c195153e8c32e85300d9208e56624a7a834989244a8b9160d2e5dd35b9f92bd
SHA5124072f5292ac3f24c66254e1b97006b87e3ec89c6e74c529dc815d6bb43a19f69dda4686c2d78ff828c073ba0a80aa31c9ad8ebc00ce12bed32039b74e654135c