Analysis
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max time kernel
148s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
01/06/2024, 18:26
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-01_54ccc81a7970aea370efe1fa08b304bc_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-01_54ccc81a7970aea370efe1fa08b304bc_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-01_54ccc81a7970aea370efe1fa08b304bc_cryptolocker.exe
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Size
48KB
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MD5
54ccc81a7970aea370efe1fa08b304bc
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SHA1
68eab3df4bd54e0f48d1a48124dcda5ef5e530b0
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SHA256
59d43c2b92a4468250f47ff3a7ad3fae4e373b52738cfe996f868cd5cde93873
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SHA512
fc2ffafcfee3e574fe9c5d0fa3aa39356adb76b30b877bde656a27129e3dc399713488750c7e1dcff54e15dd6cc9c28ee1d4f5d7fcbbc3f85b43baba0df4cfe6
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SSDEEP
768:79inqyNR/QtOOtEvwDpjBKccJVODvy3Sp8LI:79mqyNhQMOtEvwDpjBzckqSuk
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5008-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000900000002351a-13.dat CryptoLocker_rule2 behavioral2/memory/5008-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3196-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/5008-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000900000002351a-13.dat CryptoLocker_set1 behavioral2/memory/5008-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/3196-17-0x0000000000500000-0x000000000050F000-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 2024-06-01_54ccc81a7970aea370efe1fa08b304bc_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3196 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 5008 wrote to memory of 3196 5008 2024-06-01_54ccc81a7970aea370efe1fa08b304bc_cryptolocker.exe 92 PID 5008 wrote to memory of 3196 5008 2024-06-01_54ccc81a7970aea370efe1fa08b304bc_cryptolocker.exe 92 PID 5008 wrote to memory of 3196 5008 2024-06-01_54ccc81a7970aea370efe1fa08b304bc_cryptolocker.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-01_54ccc81a7970aea370efe1fa08b304bc_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-01_54ccc81a7970aea370efe1fa08b304bc_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5008 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3196
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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=4000,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=3976 /prefetch:81⤵PID:3188
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
49KB
MD5171e99d82ad7ac6c97fcf4cb23850cdb
SHA1fe34b9bb42ae690ad8a147fd48ba124b73758fd9
SHA256884355d6ca0ec8af04be686b0a3ca3e5c2d2a6f750c9a51a28bb6727ed07769d
SHA512102af9e4043c90fc2621211ee7001579d5b159f1ca9df504a18f373cf20c2bac2730f010e2f6071b9c94d839cf450955560be3521f91b7123a1eef96e2bc6a69