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Analysis
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max time kernel
145s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
10/06/2024, 11:49
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe
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Size
47KB
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MD5
f191ad552423b6cb66793ff22dd37bef
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SHA1
ecf6aa74d33dc507a5d347e246268dffd11b0e6f
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SHA256
6bb01522743924f7b11a5592a4938945eaa3201625e1255bd6f01cefceeabc31
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SHA512
497b19d498706042dba396db7b0b901351a73e62fe3533ba89f235a724eee04070e69b74fb57c1311502769afd94d436800e6da574e25d2b607b55e51edcce0f
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SSDEEP
768:79inqyNR/QtOOtEvwDpjBKccJVODvy3SpUv:79mqyNhQMOtEvwDpjBzckqS+
Malware Config
Signatures
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Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/536-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000002324a-13.dat CryptoLocker_rule2 behavioral2/memory/536-25-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral2/memory/536-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000800000002324a-13.dat CryptoLocker_set1 behavioral2/memory/536-25-0x0000000000500000-0x000000000050F000-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 2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1356 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 536 wrote to memory of 1356 536 2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe 91 PID 536 wrote to memory of 1356 536 2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe 91 PID 536 wrote to memory of 1356 536 2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:536 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1356
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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=4136 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:81⤵PID:5012
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
47KB
MD502e81b68675d7b917eff805569960d31
SHA1925abe87fd7546a3d28e598ce156dcd0c00922b1
SHA256ce7bcc5be88aa7d535b8ed12c326e277f948d3a127caef7f306887122d76a7d4
SHA512510cd9028abedf3c534fcfd119b75211cbef746cf8c11699dc81e1d2e8447b3fd1b5f3fda046361be32a41611aed65a0af1f9b9e07a94bc4f513154883d9f0d4