Analysis
- max time kernel
148s - 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
25/05/2024, 03:59
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2024-05-25_8db0ef5b9fdef8996a18a313c3c52b5a_cryptolocker.exe
Resource
win7-20231129-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-05-25_8db0ef5b9fdef8996a18a313c3c52b5a_cryptolocker.exe
Resource
win10v2004-20240508-en
6 signatures
150 seconds
General
- Target 2024-05-25_8db0ef5b9fdef8996a18a313c3c52b5a_cryptolocker.exe
- Size 54KB
- Sample240525-ej2hcadg3y
- SHA256 98a75a02b602652ad25a22e5e8f1936988ae4233f26155bddca44a14ba0c10ad
- MD5 8db0ef5b9fdef8996a18a313c3c52b5a
- SHA1 6c219e1edb2f6709691e3124b410f028294c4cb9
- SHA512 564264bf20f755ca421a9b6a3c4831f75e1bb59439a58e924dd5b85a43aa757e2e2c10e38653a0d55502fab2c53f04778ceb1bf34d610d05f0cfeae95b3e9b87
- SSDEEP 768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcaTIe:X6QFElP6n+gJBMOtEvwDpjBtExmlB
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000a00000002328e-12.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000a00000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-05-25_8db0ef5b9fdef8996a18a313c3c52b5a_cryptolocker.exe - Executes dropped EXE 1 IoCs
pid Process 3196 asih.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4116 wrote to memory of 3196 4116 2024-05-25_8db0ef5b9fdef8996a18a313c3c52b5a_cryptolocker.exe 83 PID 4116 wrote to memory of 3196 4116 2024-05-25_8db0ef5b9fdef8996a18a313c3c52b5a_cryptolocker.exe 83 PID 4116 wrote to memory of 3196 4116 2024-05-25_8db0ef5b9fdef8996a18a313c3c52b5a_cryptolocker.exe 83
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-05-25_8db0ef5b9fdef8996a18a313c3c52b5a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-25_8db0ef5b9fdef8996a18a313c3c52b5a_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4116 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3196
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\asih.exe
- Size 54KB
- SHA256 3a5ab28ecdb4e40449a142da7a01dc276fcd6e75553d906c2e747838d50b12f0
- MD5 ef78f15d9b739694e30d36c9648fe052
- SHA1 f45002518bc71bd35079a38fc47ea27caef5f67d
- SHA512 5086b18d995996f6dd92fcc864fc81d5afa8efcdc4234191d5430a3c16fe24f6956e1934455037f76a2e448dc0d7a045310d94be1965cf48f9fc610f8c9a5fe1
- SSDEEP 768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcaTIN:X6QFElP6n+gJBMOtEvwDpjBtExmla
- MD5 SHA1 SHA512 SSDEEP