Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
03/06/2024, 07:46
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe
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Size
5.5MB
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MD5
d03269204fcc1b0762bdbe04ef5707fa
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SHA1
3a9e2fbe0baf8a007cce5add773d03f61e0a488b
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SHA256
a26cf784cff73f77ec876a046f29721f4e15c24d818d98e1ffbd6fb749b05af3
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SHA512
7a40a072f9c6e17ece7d61940696256c8f3f5e8ac732d38d718db60419edf0e46ab0c1f5c61e35c86985f393b2f6b32397e19ef20985f5410d5fed70b77e93be
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SSDEEP
98304:ot1QKvyjzO6B3DenIMmzyxD++XsBq+JUieGNt3sB/a1Ed9m+UfJ:otTvgz73XMpxDbcwYvt3sFa4OJ
Malware Config
Signatures
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Detection of CryptoLocker Variants 9 IoCs
resource yara_rule behavioral2/memory/2308-0-0x0000000008000000-0x0000000008884000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2308-2-0x0000000008000000-0x0000000008884000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2308-4-0x0000000008000000-0x0000000008884000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2308-13-0x0000000008000000-0x0000000008884000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0008000000023405-17.dat CryptoLocker_rule2 behavioral2/memory/2308-21-0x0000000008000000-0x0000000008884000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1476-25-0x0000000008000000-0x0000000008884000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1476-24-0x0000000008000000-0x0000000008884000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1476-33-0x0000000008000000-0x0000000008884000-memory.dmp 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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation 2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1476 lossy.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2308 2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe 2308 2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe 1476 lossy.exe 1476 lossy.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2308 wrote to memory of 1476 2308 2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe 86 PID 2308 wrote to memory of 1476 2308 2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe 86 PID 2308 wrote to memory of 1476 2308 2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_d03269204fcc1b0762bdbe04ef5707fa_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2308 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:1476
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
5.5MB
MD5d3d6ab48cdf45035cbad9e7945d9ad40
SHA1a1e61f8d289a5d7ddc149b06d6bba398142558b0
SHA256219cc6ddef34a3803d8e54eeb1cd20af561cf5b48e6c237b79145a6287b95fdb
SHA5121bf38d56755cfc1dabd1a34c68011b9b3b3fd6b65ed61f5da59f80bb4a3f3ac9c8c2f4c7ac32e138e6ff1f0a5941f6c08284d81b34b605f5452cd8e7cc89a1f3