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Analysis
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max time kernel
151s -
max time network
165s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
16/06/2024, 18:27
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe
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Size
47KB
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MD5
32e38a5e45a1213a2fd87d685f9d8eb4
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SHA1
b482ff4091fca8971099dd0e9b209eff821852f2
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SHA256
c1f636b64501de80ea07ae94219559bb9fb40dbe584b570714945a6bffd4b04b
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SHA512
dabb66da1ca6f54fc18abd4a8d877f114598ea5efe2bfcf489e035effb0579b4d616f293cef62a5d9f072dc65812dfabd9c4484b71a7a97372f272a0666a88c0
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SSDEEP
384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLW2Vr:79inqyNR/QtOOtEvwDpjBKccJVODvy3m
Malware Config
Signatures
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Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/3696-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000900000002324b-13.dat CryptoLocker_rule2 behavioral2/memory/3696-25-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral2/memory/3696-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000900000002324b-13.dat CryptoLocker_set1 behavioral2/memory/3696-25-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1232 asih.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 3696 wrote to memory of 1232 3696 2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe 92 PID 3696 wrote to memory of 1232 3696 2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe 92 PID 3696 wrote to memory of 1232 3696 2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-16_32e38a5e45a1213a2fd87d685f9d8eb4_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3696 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1232
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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 --mojo-platform-channel-handle=1340 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:81⤵PID:1088
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
47KB
MD5ad23261eac318090d0cf1b0bf399bc72
SHA175bbf5bd6cbc0aee49213eb54380f2421320807f
SHA25621b7e17ca20d6a556c27de25d193190a019ee3cb1656bac90f69b564fcb95a64
SHA5123df335cb2325b811cf43a4dad7e5f5fab566b0b604ebd27ba96b7068f7bdcfd34ddf27b0045bad63fd4ad3263f4065aea1861f6cc3d7998516bf76afaab4e540