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Analysis
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max time kernel
141s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
09/03/2024, 02:47
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe
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Size
37KB
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MD5
ae7013fde62085839ed83f921accf8f7
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SHA1
42a3f5c75a47f58ba8c128141a37e2d30f4cc1ce
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SHA256
b124122a7f19b0a4ded2d57e335543e2463f002467884ceb4d0e721bce1c73c6
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SHA512
91753561d355c71dce8620737631d041de2731770896294b23e67be1c3a9b67495710ffb9c7d50683a8f4c0f3c74d87dc98cef26bd0c83660cc72fbac1c13ce0
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SSDEEP
768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLCn:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLY
Malware Config
Signatures
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Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/1964-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0007000000023264-13.dat CryptoLocker_rule2 behavioral2/memory/1964-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral2/memory/1964-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0007000000023264-13.dat CryptoLocker_set1 behavioral2/memory/1964-17-0x0000000000500000-0x000000000050B000-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 2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1968 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 1964 wrote to memory of 1968 1964 2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe 101 PID 1964 wrote to memory of 1968 1964 2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe 101 PID 1964 wrote to memory of 1968 1964 2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1964 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1968
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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=4036 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:81⤵PID:1860
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
37KB
MD5343366a96cb26616d8d2bca7314efdc7
SHA1724b3b22edc4a9bb1b2689d4aacf15ce18aeb978
SHA256334ba0af67ee5b90a40952f518d7f48c457d76051bcfbc1dccb1668f1fadd1cf
SHA51204bbcbdd34b323cafa900a05115f2fceddc7fd8fc2a2a5959d8c2992c8a238467c76ff5b4e4210ad4c4f1e3d83ed0cd7234a055dd5d1d961f4ab8ec223559611