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Analysis
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max time kernel
148s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
12/05/2024, 03:49
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe
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Size
41KB
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MD5
45a4003e30ec7bb87055b82bd8dabd8f
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SHA1
6196948e40bbc192f1893aebac9640aa969316d2
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SHA256
f4d3a6f6eb5118976870cf302a0c1cd9c6fb446faa66815a85b962d7c13effa9
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SHA512
ab9e0c5895078c85541b9612e4a575aecfbf5a935b5a7f015fa36fea9f9deac57189f11b7595e37fe378263d56c4d9fab556b135eee9892988a712a8b7a6cdc3
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCW:X6QFElP6n+gJQMOtEvwDpjBsYK/fp
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023289-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023289-12.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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation 2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4036 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 1320 wrote to memory of 4036 1320 2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe 83 PID 1320 wrote to memory of 4036 1320 2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe 83 PID 1320 wrote to memory of 4036 1320 2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1320 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4036
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD57a3d83f0c162e77c52d5e706fef06e1f
SHA1a60c239dc5f51ddfad12a392aa61b7bb630a3463
SHA256a3912a2450e99da80c0b21e758cf9de8710fc926905136deec3425454ed4ad5d
SHA512479f7fe787d01c727a745750cf4d2043f8c80fe68bb231990669351f842da69642b5faf600c1f50934c154f3df453bc60248fc4325ce4037f4112dfbaf467451