Analysis
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max time kernel
147s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
09-06-2024 03:35
Behavioral task
behavioral1
Sample
2024-06-09_3d0a8b2237045e51d62f2f464d84ade4_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-09_3d0a8b2237045e51d62f2f464d84ade4_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-09_3d0a8b2237045e51d62f2f464d84ade4_cryptolocker.exe
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Size
53KB
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MD5
3d0a8b2237045e51d62f2f464d84ade4
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SHA1
73136974b69a800f4ab472da78b580e39a76f393
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SHA256
336565d44adc8860eac89c39655aeab1e7f63d256002848b4968e02051416059
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SHA512
bd05b067e42bec9a8b824b796772d88235d258950731388295665c814f3fce0c8809fc6ca6f36e02294b4c3bfeaf4b5137097122f0eb6f0d21eeefea409974fd
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SSDEEP
768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOI:z6QFElP6n+gKmddpMOtEvwDpj31iI
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/3096-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3300-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3096-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0008000000022f51-16.dat CryptoLocker_rule2 behavioral2/memory/3300-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/3096-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/3300-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/3096-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0008000000022f51-16.dat CryptoLocker_set1 behavioral2/memory/3300-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral2/memory/3096-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/3300-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/3096-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/files/0x0008000000022f51-16.dat UPX behavioral2/memory/3300-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 2024-06-09_3d0a8b2237045e51d62f2f464d84ade4_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3300 asih.exe -
resource yara_rule behavioral2/memory/3096-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/3300-18-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/3096-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x0008000000022f51-16.dat upx behavioral2/memory/3300-27-0x0000000000500000-0x0000000000510000-memory.dmp upx -
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 3096 wrote to memory of 3300 3096 2024-06-09_3d0a8b2237045e51d62f2f464d84ade4_cryptolocker.exe 82 PID 3096 wrote to memory of 3300 3096 2024-06-09_3d0a8b2237045e51d62f2f464d84ade4_cryptolocker.exe 82 PID 3096 wrote to memory of 3300 3096 2024-06-09_3d0a8b2237045e51d62f2f464d84ade4_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-09_3d0a8b2237045e51d62f2f464d84ade4_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-09_3d0a8b2237045e51d62f2f464d84ade4_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3096 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3300
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
54KB
MD50d05c3b5bc2ff8e97e59ebef30ff4cd8
SHA127ce43b848f352419b90d7b8f30b1912f54be5d8
SHA256ad4a5a3575e20006b3af8364f9f07a6cdc0d08068c8f590a065d118c922f9f47
SHA5124882b24508d42b4dc96fd48ff09c14b2bc7d7a1779f5e57101764eb29f04ca86f04748f3deb659b00fa57b39e12526d4d92a8b057c70a886639b0e3bd7c97be9