Analysis
- max time kernel
150s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20240419-en - resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system - submitted
29/04/2024, 19:24
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2024-04-29_0aa8f3d855e04c8827a2efcbbd954e45_cryptolocker.exe
Resource
win7-20240221-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-04-29_0aa8f3d855e04c8827a2efcbbd954e45_cryptolocker.exe
Resource
win10v2004-20240419-en
5 signatures
150 seconds
General
- Target 2024-04-29_0aa8f3d855e04c8827a2efcbbd954e45_cryptolocker.exe
- Size 34KB
- Sample240429-x4pcmaag62
- SHA256 0f5532a49b47fa9f478cd42b4f01de2c0b60d2b52af006976100060f6e81736a
- MD5 0aa8f3d855e04c8827a2efcbbd954e45
- SHA1 dfcf19f9985da3cc6f62774db1c1bb7a0ded3da7
- SHA512 de10ff69252ffa810bb71707f05d04fc71d888f34615c8efb09e14c3db56752dc6e91658a23117f406a46f532322b7f65cb3e1472fa6d4084f6a74103edca6cc
- SSDEEP 384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cuM9gxrY:bAvJCYOOvbRPDEgXRcuM9gxc
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000d000000023b25-12.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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation 2024-04-29_0aa8f3d855e04c8827a2efcbbd954e45_cryptolocker.exe - Executes dropped EXE 1 IoCs
pid Process 3028 demka.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 4896 wrote to memory of 3028 4896 2024-04-29_0aa8f3d855e04c8827a2efcbbd954e45_cryptolocker.exe 83 PID 4896 wrote to memory of 3028 4896 2024-04-29_0aa8f3d855e04c8827a2efcbbd954e45_cryptolocker.exe 83 PID 4896 wrote to memory of 3028 4896 2024-04-29_0aa8f3d855e04c8827a2efcbbd954e45_cryptolocker.exe 83
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-04-29_0aa8f3d855e04c8827a2efcbbd954e45_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-29_0aa8f3d855e04c8827a2efcbbd954e45_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4896 -
C:\Users\Admin\AppData\Local\Temp\demka.exe"C:\Users\Admin\AppData\Local\Temp\demka.exe"2⤵
- Executes dropped EXE
PID:3028
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\demka.exe
- Size 34KB
- SHA256 2db56e48f3012468b3e05d38afc26c98ca5de5b2aed5ef1458790e426020dfe4
- MD5 90291812512f328b29d658335acf6582
- SHA1 0200fb87986cd9c889eb03da8a3feb576d42df82
- SHA512 f95eae5852d364e47ca611f215c9864354712d0d336996f6a3bdbacec5d8e2c5385b60b29a7256d5d5f989b5b4209dff1ec4ad375c0bc76d1092fc6ca7e03252
- SSDEEP 384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cuM9gxr5:bAvJCYOOvbRPDEgXRcuM9gxN
- MD5 SHA1 SHA512 SSDEEP