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Analysis
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max time kernel
90s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
17/02/2024, 13:22
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-17_0776f0973edab7f367679e0e4763c01c_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-17_0776f0973edab7f367679e0e4763c01c_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-17_0776f0973edab7f367679e0e4763c01c_cryptolocker.exe
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Size
36KB
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MD5
0776f0973edab7f367679e0e4763c01c
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SHA1
a9a61eebdc28193af7535fc141b74bb4242b9f3f
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SHA256
52b02a2558db793cd4fbbf614858899c18e7aa103d3750d786d8bbbaa5c84487
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SHA512
2d02670bd96272dbd52f7961867f03f2ff736e1768f56293cd9fd9334e5d18be3e74234a4d23a9d36de8c3adca98ccd9f546d30706c76049a3c771b9e852f8dc
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SSDEEP
384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzoiM8Nekdvjl9V50i3Nbin:bAvJCYOOvbRPDEgXrNekd7l94i3pin
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x00090000000231fb-12.dat CryptoLocker_rule2 -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation 2024-02-17_0776f0973edab7f367679e0e4763c01c_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation demka.exe -
Executes dropped EXE 1 IoCs
pid Process 3812 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
description pid Process procid_target PID 3736 wrote to memory of 3812 3736 2024-02-17_0776f0973edab7f367679e0e4763c01c_cryptolocker.exe 86 PID 3736 wrote to memory of 3812 3736 2024-02-17_0776f0973edab7f367679e0e4763c01c_cryptolocker.exe 86 PID 3736 wrote to memory of 3812 3736 2024-02-17_0776f0973edab7f367679e0e4763c01c_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-17_0776f0973edab7f367679e0e4763c01c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-17_0776f0973edab7f367679e0e4763c01c_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3736 -
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:3812
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
36KB
MD51f5ace5c55faa846a935c28935832be4
SHA1e867e8268ab298cffdc9832a90e933a0ca32523b
SHA256322759ff2487ec489e5abb132f4d58867322308fe6e744763b0ab000791d6f22
SHA512d25ef5e1c2a796000649354a181b25d67b7906e05e1974389219fafc87b10f1a6fcc9d1711c6e19254293bdc90d3aab5e44704c126fc58b440f9279e297979d2