Analysis
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max time kernel
136s -
max time network
127s -
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, 19:07
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe
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Size
45KB
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MD5
23e2286807afacdfdeee102e1e9d2439
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SHA1
5d4fd3d578f5da246a438c717d540bb8f3789d94
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SHA256
68d130c466aa6b4cc5c3adb2997c055076232302e43eac2d914a8e086f966e09
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SHA512
05ce5dbb21a6bd966dcbecb620756affc0f23bc056c1cfd58d839a8a1d84765df208a104cbffb721a37678f28d33e8330fd45ae2554e58d02531a94ed12b0b12
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SSDEEP
768:btB9g/WItCSsAGjX7e9N0hunrknljKr4Q:btB9g/xtCSKqf1rksr9
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0009000000023304-12.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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation 2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation gewos.exe -
Executes dropped EXE 1 IoCs
pid Process 4992 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 2388 wrote to memory of 4992 2388 2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe 92 PID 2388 wrote to memory of 4992 2388 2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe 92 PID 2388 wrote to memory of 4992 2388 2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2388 -
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:4992
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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=3920,i,1067197275908310731,12785105794523264014,262144 --variations-seed-version --mojo-platform-channel-handle=3848 /prefetch:81⤵PID:1604
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
45KB
MD56ea976dcf261a4c90ab519df8282afc2
SHA162c006064fcbac9bde25f6f359f5730f235db3aa
SHA2562d0090cffb0a137d0a6491677e8e484e0c1cdb3681bc05259ea6cf30d3e6ecfd
SHA512d1a50624c9603a6720360291c83d30ab7d3ce2f7327e3c9e03a1f3536caee63991f6591f197cbf816bbffd6c894f322d6859755b218b6e7e4828af3da2425e61
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Filesize
185B
MD5c0c33f4e7e39ebdb0ef15fd46816f5ab
SHA1c2d978c1bd42c0f6762fa92239f0299786fb684d
SHA256b12bd036a45223ede0ccf91e834082ac2a6c11767660de13b96f583d1eaa0c24
SHA5123238b6a74cc32e1993f2e8c63f1c1534bdcd3b5685cce60dfc6266a5c3535ab09148e1e9f36eb5bf9d09251abde63b873be5abdb14b1f9304aaa5756ff9dab4c