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Analysis
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max time kernel
148s -
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
03/06/2024, 07:37
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-03_7cd36f03d5d6243541629bc6d70a179a_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-03_7cd36f03d5d6243541629bc6d70a179a_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-03_7cd36f03d5d6243541629bc6d70a179a_cryptolocker.exe
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Size
46KB
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MD5
7cd36f03d5d6243541629bc6d70a179a
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SHA1
2b5df527a75e885eaef46f1a0efa2fc3da228037
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SHA256
7bbe95364f9e0cde34aa43a22f8bd74983bda83c58dd375c974fe43b7eb9ed4d
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SHA512
3ab5ccc04f9f85b935db8983189a858609bfafc41227242c153b5b7d1d648d56718764dd3d900e8d92984b387ee04e7322edb96f2a1b3322eabf5764e6bb2ece
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SSDEEP
768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsi7:V6QFElP6n+gMQMOtEvwDpjyaYaFAh397
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0009000000023540-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0009000000023540-12.dat 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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation 2024-06-03_7cd36f03d5d6243541629bc6d70a179a_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4672 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 3124 wrote to memory of 4672 3124 2024-06-03_7cd36f03d5d6243541629bc6d70a179a_cryptolocker.exe 90 PID 3124 wrote to memory of 4672 3124 2024-06-03_7cd36f03d5d6243541629bc6d70a179a_cryptolocker.exe 90 PID 3124 wrote to memory of 4672 3124 2024-06-03_7cd36f03d5d6243541629bc6d70a179a_cryptolocker.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-03_7cd36f03d5d6243541629bc6d70a179a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_7cd36f03d5d6243541629bc6d70a179a_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3124 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4672
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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=3980,i,13281073920029625837,8253721632651544158,262144 --variations-seed-version --mojo-platform-channel-handle=4488 /prefetch:81⤵PID:3140
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
47KB
MD538fd2b9ac207ecc9699dc49c1306abdf
SHA1e1506b4a0838122e54e90ad5c94b32e05b040e0a
SHA256b43ebf788a89eacc20016d6a289e528fbc3b7bd0813fb73d99942676b22989e7
SHA512e0467eaf158b0698489eba5fa8b9c68453a7b332d8476a823f52952db0df0304d110da50c9ed957e609e20c4ab1408974d0e727e3d0033bab7012d9bf71abae0