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Analysis
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max time kernel
147s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
28/05/2024, 06:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe
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Size
46KB
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MD5
b5164236ec8f8b417ef49c51020b9ed8
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SHA1
4c03d4909d2c036bef134345982552d6b3cd9d08
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SHA256
b216af75edfc7ac3ed4690add5b6e80281f1b5a575cc1f7d30b742028243e9d1
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SHA512
148927c416f45ea04bde0407b56a011de8c20c2fb61cf7ef5824730f4d756c18d6a41b8d1bad3ef344f63db3be65a3261723373a1c8141795f890602ad6624f8
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SSDEEP
768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsP:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3k
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x00060000000232a4-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x00060000000232a4-12.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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation 2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1484 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 2996 wrote to memory of 1484 2996 2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe 83 PID 2996 wrote to memory of 1484 2996 2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe 83 PID 2996 wrote to memory of 1484 2996 2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2996 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1484
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD5bb1ac9484024f6dad4bb31a5f677a107
SHA1f4603dbed9f008d24b648fbb0c4f3cf10a687159
SHA256c38615ece703d583b3c21c7b6b17a316cd7b4e724e32b7cad54f94ddd5fa826e
SHA512325665f3c2613ac358ae5518153e3cd3686821924f93987d210d2daf586996e935892cf19436b01333fbe038201816d9c26c8683b7135749750f7e63647cac84