Analysis
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max time kernel
148s -
max time network
160s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
27/05/2024, 18:30
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-27_53990de269da670c74a9e658a412c922_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-27_53990de269da670c74a9e658a412c922_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-27_53990de269da670c74a9e658a412c922_cryptolocker.exe
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Size
46KB
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MD5
53990de269da670c74a9e658a412c922
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SHA1
9dea92ea131b1fcaa678356843af6f0666cf33b0
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SHA256
e5250f45f3c4b75b51c6ce0d695315569b62461323471bd022159c6be175ea84
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SHA512
9b7c24b7c912d8d66843309cee1003ca70fb75a9afffb82c5fac5d7e889fd6e507ac7c74e96ee94f9ef5cfa36341dee8deb28be2d4b674f42b7728f8c2f470a5
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SSDEEP
768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAP5:P6QFElP6k+MRQMOtEvwDpjBQpVXg
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2012-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0009000000023607-13.dat CryptoLocker_rule2 behavioral2/memory/2012-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3272-26-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/2012-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0009000000023607-13.dat CryptoLocker_set1 behavioral2/memory/2012-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/memory/3272-26-0x0000000000500000-0x000000000050B000-memory.dmp 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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation 2024-05-27_53990de269da670c74a9e658a412c922_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3272 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 2012 wrote to memory of 3272 2012 2024-05-27_53990de269da670c74a9e658a412c922_cryptolocker.exe 90 PID 2012 wrote to memory of 3272 2012 2024-05-27_53990de269da670c74a9e658a412c922_cryptolocker.exe 90 PID 2012 wrote to memory of 3272 2012 2024-05-27_53990de269da670c74a9e658a412c922_cryptolocker.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-27_53990de269da670c74a9e658a412c922_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-27_53990de269da670c74a9e658a412c922_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2012 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3272
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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=4744,i,15142778360084620907,1763097090506261076,262144 --variations-seed-version --mojo-platform-channel-handle=4372 /prefetch:81⤵PID:1668
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
47KB
MD559dd7b3782d97be2069a85bfa9d76990
SHA1f21baf32f3ec8ed531b94a702ce63835c6bb66f0
SHA25664798fe77a7ef159e7739536b967ed60e621f07ff0475ba70df9062b4b9a1c5b
SHA512cd1781b5a5ddd6eaba8021506c0809834a243a06d5ce57b4d222fa1f6b2abe57190932364decc714a17aac324fff78041f8aa229ad61ac7d2f46d3c218049507