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
08/06/2024, 08:30
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2024-06-08_6e75144d5102222be939073c09205ce5_cryptolocker.exe
Resource
win7-20240221-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-06-08_6e75144d5102222be939073c09205ce5_cryptolocker.exe
Resource
win10v2004-20240508-en
6 signatures
150 seconds
General
- Target 2024-06-08_6e75144d5102222be939073c09205ce5_cryptolocker.exe
- Size 97KB
- Sample240608-keg6ssbd65
- SHA256 e4e4fc4c985d9caaa5485f41e5590cd21da5b58dc70414f151bd1c00aaabf0ea
- MD5 6e75144d5102222be939073c09205ce5
- SHA1 8cf456fe6314eb3e9997b9ac2e726c493e6a4124
- SHA512 b92b9c4ee6505c2caf3b5d674997b75e7d62a048174dd1222c16ee05aab1be6e2c9cda1ecd001134dab7385446a992086f26f5a46b9771ca93f8141bf618308b
- SSDEEP 1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpEq:V6a+pOtEvwDpjtzy
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0008000000022f51-12.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0008000000022f51-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 2024-06-08_6e75144d5102222be939073c09205ce5_cryptolocker.exe - Executes dropped EXE 1 IoCs
pid Process 756 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 740 wrote to memory of 756 740 2024-06-08_6e75144d5102222be939073c09205ce5_cryptolocker.exe 82 PID 740 wrote to memory of 756 740 2024-06-08_6e75144d5102222be939073c09205ce5_cryptolocker.exe 82 PID 740 wrote to memory of 756 740 2024-06-08_6e75144d5102222be939073c09205ce5_cryptolocker.exe 82
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-08_6e75144d5102222be939073c09205ce5_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-08_6e75144d5102222be939073c09205ce5_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:740 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:756
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\asih.exe
- Size 97KB
- SHA256 de5167909c7feff74d7fdfd71961caa5c318cbf8b9429fe173fbfddb6f49f806
- MD5 567b0f608f14c269ccc49fd174e55167
- SHA1 a407fe86fb6c446786c6796d8e68c60792e01abb
- SHA512 79f0245cefeea9c59b9f493d1b8dd8f73979f06d959c0748cd32a72cd719e47aadf181ed5cf8428b08deaa42470bdd97695230331bc10b4a598ef000545b6933
- SSDEEP 1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpEF:V6a+pOtEvwDpjtzd
- MD5 SHA1 SHA512 SSDEEP