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Analysis
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max time kernel
145s -
max time network
162s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
18/04/2024, 08:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe
Resource
win7-20240319-en
Behavioral task
behavioral2
Sample
2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe
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Size
41KB
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MD5
5f79b904f3c933ba01f0942611170409
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SHA1
52ddf3b9df48fabdc01ccffd1b1b2061af895afe
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SHA256
ad5d88f084f6d9406706dc63843355f72f23db44c5198b1226256846a747abef
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SHA512
56ce8e137752166dd02257faa4fc8ab6cc208b25218a3c5388db46c02571c7e4be5cef85f9a9277662ae45d23d1c7e78f849331649e04e2384ca93fac3c0bb2c
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcU:X6QFElP6n+gJQMOtEvwDpjBmzDkWU
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000800000002323a-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000800000002323a-12.dat 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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3976 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 648 wrote to memory of 3976 648 2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe 90 PID 648 wrote to memory of 3976 648 2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe 90 PID 648 wrote to memory of 3976 648 2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:648 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3976
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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=4124 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:81⤵PID:2204
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD58ba74f19e2f1f64a899edd5449ec2b35
SHA13353a3526cf5ffa7f427a3c6fb74f7d7586bb69f
SHA2568bd754b653bd8f8d9e9401d885b4e5f4fe6a21e98078714fb676d8a4fe62c9ee
SHA51253bd074ac98cf21469b9db1db610d53983a48c60e60c5baf1f1507026d33018fb4eeb721a18452a6fd43be8ad17a2f81f48896d0d796b96bb4566593c69313ac