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Analysis
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max time kernel
148s -
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
15/05/2024, 03:27
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-15_463640dd22f95dbbf8847233914b807d_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-15_463640dd22f95dbbf8847233914b807d_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-05-15_463640dd22f95dbbf8847233914b807d_cryptolocker.exe
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Size
96KB
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MD5
463640dd22f95dbbf8847233914b807d
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SHA1
d9dd78de0cafa793d3e5e3f52aa3ef4c388422d4
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SHA256
f24ed1ef77f71fdc857911ced092bfde801b33d963f253d1a09c93c3d0907992
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SHA512
f253ebc9267f7867373464ee0ebca8fc650682639a0585796269c699fea37521059d5813394fa5a8ae80a3ec0c4c89f52773a5a2716e8036942a78148c773595
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SSDEEP
1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMgJ:V6a+pOtEvwDpjtzl
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000b000000023219-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000b000000023219-12.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 2024-05-15_463640dd22f95dbbf8847233914b807d_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4452 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 412 wrote to memory of 4452 412 2024-05-15_463640dd22f95dbbf8847233914b807d_cryptolocker.exe 90 PID 412 wrote to memory of 4452 412 2024-05-15_463640dd22f95dbbf8847233914b807d_cryptolocker.exe 90 PID 412 wrote to memory of 4452 412 2024-05-15_463640dd22f95dbbf8847233914b807d_cryptolocker.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-15_463640dd22f95dbbf8847233914b807d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-15_463640dd22f95dbbf8847233914b807d_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:412 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4452
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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=4080 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:81⤵PID:2108
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
96KB
MD5670025c3d3a9993f2e5a3cedfa5c8b39
SHA1d90249856a79791e9602bba9df203fb71f4acf4a
SHA256895a004c5a9f312775ebbc5ecc6815aacaab23ad986ad4d3394e2294e09835d2
SHA512cccd07eb896bafe988fa4ac87f006c0eecafabbbb99689d6c968d1ca5beb4d66e549b066837ee358f5e7baa0c9a741ba295efc5bb43b0e8e96363f83288606a0