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Analysis
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max time kernel
142s -
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
11/03/2024, 05:53
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-11_aa01992c752cd5389bbf54168aa9537b_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-03-11_aa01992c752cd5389bbf54168aa9537b_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-11_aa01992c752cd5389bbf54168aa9537b_cryptolocker.exe
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Size
78KB
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MD5
aa01992c752cd5389bbf54168aa9537b
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SHA1
facffa8a3c6b20e54258fd7fd1e4cd8decac887b
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SHA256
15c08bfc517bcf5d8fe5e801504e1edf1da893c8b76dc8aa25c3bfb39d542eac
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SHA512
fee7a5da10cf23599cc63a8f537545e17c0b30f353f72c7e69f06701dc6de14b6c4d8de5070ef33d57362c3bade8ec09ff38b3e83b8827d25a3cc7a9666c2647
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SSDEEP
1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KEWTPP:ZVxkGOtEvwDpjcaxK
Malware Config
Signatures
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Detection of CryptoLocker Variants 2 IoCs
resource yara_rule behavioral2/files/0x000700000002325a-13.dat CryptoLocker_rule2 behavioral2/files/0x000700000002325a-16.dat 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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 2024-03-11_aa01992c752cd5389bbf54168aa9537b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 920 misid.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 3592 wrote to memory of 920 3592 2024-03-11_aa01992c752cd5389bbf54168aa9537b_cryptolocker.exe 100 PID 3592 wrote to memory of 920 3592 2024-03-11_aa01992c752cd5389bbf54168aa9537b_cryptolocker.exe 100 PID 3592 wrote to memory of 920 3592 2024-03-11_aa01992c752cd5389bbf54168aa9537b_cryptolocker.exe 100
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-11_aa01992c752cd5389bbf54168aa9537b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-11_aa01992c752cd5389bbf54168aa9537b_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3592 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:920
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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=3992 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:81⤵PID:1620
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
78KB
MD512bbb0ef2234d35dc8289df832f66730
SHA170b67f2c26295688b24c3012c886b94411cd99ce
SHA2569c4e448209c504fc6cc22ce190edf214b1c45a746d289e6ae808a8d9e5e2ae67
SHA512c99902a77d8f5014ef1e8da64ce16e0e9c39737c7bc1e59f946a64daff4a132b54a69cb3954ed86eca892f5004ffa03453ddfbdc709d395f84dcbf54e83700dd
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Filesize
19KB
MD56d43bffeeee2c318a31fbe79c78f831f
SHA1d77cafb4dd4b12f03b4afdfa1befed3848b43ab6
SHA256658ae1bf624830c34a17fa8b6a6810823f609b271a36c35f3769e42c019d171b
SHA512975a8c23c395a3569620550ba30dbafc62cc1bc6bd9b67f33e1e45d4643a9c559b0cd71d96f50d28e9a702f8d2b90d5bff9c2dff0013bffa3d024ab90c3db38e