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Analysis
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max time kernel
137s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
10/05/2024, 02:55
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe
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Size
50KB
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MD5
60838f40eac5ea2ba6d36e64797bdf8d
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SHA1
ed982e113dedf97d075f85b5877b5e82a5b44ce8
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SHA256
3cf552d5e55d46f64468149ba01ee30da79d8e9e23dfe63c558f04809a804e97
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SHA512
e962d171fcc18e345302beadf68da2e89ce7a118d6faef38c336ae380556a28b1a91756fd455cd33c0b88527654e8fa7cc0a237bb5eaec3bbb756c37a8dfab88
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZYY:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLiY
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000900000002325f-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000900000002325f-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4220 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 4452 wrote to memory of 4220 4452 2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe 91 PID 4452 wrote to memory of 4220 4452 2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe 91 PID 4452 wrote to memory of 4220 4452 2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4452 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4220
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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=5164 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:81⤵PID:4284
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
50KB
MD5a5e5a0f2ff0ce3597068e8543c115324
SHA159437955b5501b6150f7d57fd2e71d42b5ad46d3
SHA2569953b80bd5b79d01b51daf19bed842846326434f3d4d1f2080f43fd94aea196a
SHA5127694444f48e8ed4ee5ad8eff1256627278185b0254fc0b981ea2bd4768216fe791675cf041c11edc4cea24326df482b2f83b81a78bf42a0b7aabbacb39f62610