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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
12/03/2024, 21:32
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe
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Size
57KB
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MD5
760b02f89b42cdb9838e858c154b68a1
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SHA1
5ccc70ab6116dd74bcd0e7172b25485e6720fd94
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SHA256
9f2e53a3d30be257c7ccfb40a75960933dc2fb4c8412c07d4efe27a31593aec1
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SHA512
f756e02bcad70a3a558615d516c1a10ff1496f4647ea2c318839af395571536d3c25382c549c538aadaafdcdd736d71cb79c5e1c99c551cdd03bb50c230ef86d
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SSDEEP
1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHF:btng54SMLr+/AO/kIhfoKMHdk
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000700000002325f-12.dat CryptoLocker_rule2 -
Checks computer location settings 2 TTPs 2 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 2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation gewos.exe -
Executes dropped EXE 1 IoCs
pid Process 3708 gewos.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 4116 wrote to memory of 3708 4116 2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe 101 PID 4116 wrote to memory of 3708 4116 2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe 101 PID 4116 wrote to memory of 3708 4116 2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-12_760b02f89b42cdb9838e858c154b68a1_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4116 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:3708
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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=1340 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:81⤵PID:4268
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
57KB
MD53fe262886314f83391011dfccb29268e
SHA11a75b6b3f3a60634e90dc39d88c1e27533409994
SHA2564d8e5f1942b670bb18db4d21a87b4e4950367a61946ec2a5f50db948d33600ee
SHA512094f11eb65284f84609869437a3f94e862f7239edd19a07756fdcb30c1d9acd9ffb5f253cf92dacc030a61cf626fd24fd02158fcacb8bb55b8a706eeed591963