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Analysis
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max time kernel
148s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
25/04/2024, 17:47
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-25_7bb1bbcca0bae9e61d899eceb3751fec_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-25_7bb1bbcca0bae9e61d899eceb3751fec_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-25_7bb1bbcca0bae9e61d899eceb3751fec_cryptolocker.exe
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Size
45KB
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MD5
7bb1bbcca0bae9e61d899eceb3751fec
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SHA1
9930c271b48198362b14209c7eca2b8a1e8aab0f
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SHA256
9dbd54f2da5a93055772ff01851f9bce3af7db49337be8ad8db5ef2179cb2f76
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SHA512
30f005e9a70cdcf2d5c49c2c37a8cef79e8d8eb4e28456ab5a7d77905483777d4deeac44cbc2b54160d21ca7b0d89de8bc9dbe95ff849364ca3f9dcb196cb028
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SSDEEP
768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsx:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3G
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000800000001db0e-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000800000001db0e-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation 2024-04-25_7bb1bbcca0bae9e61d899eceb3751fec_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2260 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 3452 wrote to memory of 2260 3452 2024-04-25_7bb1bbcca0bae9e61d899eceb3751fec_cryptolocker.exe 85 PID 3452 wrote to memory of 2260 3452 2024-04-25_7bb1bbcca0bae9e61d899eceb3751fec_cryptolocker.exe 85 PID 3452 wrote to memory of 2260 3452 2024-04-25_7bb1bbcca0bae9e61d899eceb3751fec_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-25_7bb1bbcca0bae9e61d899eceb3751fec_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-25_7bb1bbcca0bae9e61d899eceb3751fec_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3452 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2260
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
45KB
MD500a074480a9d5fd9f51864892346fd53
SHA178c56f34e98e4580a9ec10c88e9b53eea6ca9365
SHA256ed711c7588bdaa3b0172a270423241bc9b62e98e528f99bfc3e7bef867b347be
SHA512116ee604291c426aeac710e062fe8e9c4b912b74d835962f9530a3c7d4f8a14a3da3cb3d130e6703612a5e77a7228147ada4600c013057348feb65ea97c515f6