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Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
05/04/2024, 03:24
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe
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Size
33KB
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MD5
002b8f06e3a17fe2e11c8f4a98b519b9
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SHA1
588a0dd8e589db6e4747063b9203f52c82bec6bf
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SHA256
454ece330cc86117b460bacba94aa486423960fede869170443aa2ac10728449
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SHA512
865ad6e706219888ae1c441bff36d8425d3f4cbf1ebbc19bb5cc97b3a9180b6c3f3d605900ea692867b524b45327ea00afa65d0ba449f8981b30dd4ab7637ff6
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SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznUsD5h5:b/yC4GyNM01GuQMNXw2PSjZ/5
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x00080000000231fa-12.dat CryptoLocker_rule2 -
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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation 2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2868 retln.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 3228 wrote to memory of 2868 3228 2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe 88 PID 3228 wrote to memory of 2868 3228 2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe 88 PID 3228 wrote to memory of 2868 3228 2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3228 -
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
PID:2868
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
33KB
MD514e8b6719e2894aebb6d9b79063d4c9c
SHA1c6100979e848bf0d81825d067362840c6bf41832
SHA2567a8197fa94e0ecc2af3ef4b2bf80dcef6cfc1b1da333df6608058e730aec8e24
SHA5127604cbeb0c6afc8170f228d465ee7a72d2eb416c608f2e971bcba3dc035b562c93b09ab99a124bc51c600143ba7e1c9a3fa0e6b22fc3535300ea2e78718c52b7