Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
02/06/2024, 04:49
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-02_e16b4d3ea88080431fbdefbedf57f155_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-02_e16b4d3ea88080431fbdefbedf57f155_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-02_e16b4d3ea88080431fbdefbedf57f155_cryptolocker.exe
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Size
42KB
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MD5
e16b4d3ea88080431fbdefbedf57f155
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SHA1
41c013b8f21bb07505aa3da8e05722494a45a29b
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SHA256
be08bb522045dd6dbf020ea65b7457d1fb0387edca2e8d39a8dadc06449af456
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SHA512
eabb7adc92d9edc40701db4fddde45312f2445c920ec2a0adb031cbc9cfe4edde2464e210ef4087ea02f47649ce1004521a4fe58f7fda32761b0eb064667532c
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SSDEEP
768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqAH:bCDOw9aMDooc+vAqAH
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/3112-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0009000000023546-13.dat CryptoLocker_rule2 behavioral2/memory/3112-16-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2492-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2492-27-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 -
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 2024-06-02_e16b4d3ea88080431fbdefbedf57f155_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2492 lossy.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 3112 wrote to memory of 2492 3112 2024-06-02_e16b4d3ea88080431fbdefbedf57f155_cryptolocker.exe 90 PID 3112 wrote to memory of 2492 3112 2024-06-02_e16b4d3ea88080431fbdefbedf57f155_cryptolocker.exe 90 PID 3112 wrote to memory of 2492 3112 2024-06-02_e16b4d3ea88080431fbdefbedf57f155_cryptolocker.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-02_e16b4d3ea88080431fbdefbedf57f155_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_e16b4d3ea88080431fbdefbedf57f155_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3112 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:2492
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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=4156,i,13035806169561352434,1332896185314862791,262144 --variations-seed-version --mojo-platform-channel-handle=4124 /prefetch:81⤵PID:2520
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
42KB
MD5ea21a9f2322f1025f08a6fdca575b77c
SHA164abf3bfb99f657402bf259c0cc736ad77deca4f
SHA25656a39ca7c530120002aafdae16e390569aa860e95c7779d7d41a142edbd13c34
SHA5128ed2f74f34c1053280554a333512d89c5f76887bb87628abb6849301230c750b3ca7b20d5acf9029dc39874508f7b450ee39a2193e82e34d85280672adf2071d