Analysis
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max time kernel
150s -
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
13-06-2024 12:24
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe
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Size
82KB
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MD5
050e12ee74b8155ab700c46d10689830
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SHA1
b67b3bab9b40abef074b69ff132c9108d0d7ef20
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SHA256
b90f8095274d599bdadf6875c9b6ae4a35ccd057a337cc2063ddb5e3b4697d9b
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SHA512
47d43538e161c7b8355e435648db1c826bc5d0e9fdaf8fe9cc2526e190aeefb3bc26ad7002440c2cab219ad7921e8b4bd73609162158ef5734713313833a328d
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SSDEEP
1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMr3p:TCjsIOtEvwDpj5HE/OUHnSMD
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
Processes:
resource yara_rule behavioral2/memory/4564-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 C:\Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_rule2 behavioral2/memory/1436-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4564-25-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1436-27-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
Processes:
resource yara_rule behavioral2/memory/4564-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 C:\Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_set1 behavioral2/memory/1436-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/memory/4564-25-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/memory/1436-27-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation 2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
misid.exepid process 1436 misid.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:
2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exedescription pid process target process PID 4564 wrote to memory of 1436 4564 2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe misid.exe PID 4564 wrote to memory of 1436 4564 2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe misid.exe PID 4564 wrote to memory of 1436 4564 2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe misid.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4564 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:1436
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4104,i,10373433614523925616,13586256558317053467,262144 --variations-seed-version --mojo-platform-channel-handle=3976 /prefetch:81⤵PID:3716
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
82KB
MD5a11867f8ead957fc6b5ae1c7200fd71a
SHA151f1dbc231ce95be0918e5d83e606f9909544af9
SHA2562b8a55147220731556aef51af3ee65faa77dd4b576f454cb6c398cecc9059d4e
SHA5121dcd92472a398896338a4e9dc04383d748d46cc3df4d476c9cb9d51479949fa74bcc92475a2547a39ff6ec0f5d61336706486541f0ec0dc72ce00c874f460724