Analysis
- max time kernel
151s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system - submitted
25/01/2024, 15:37
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2024-01-25_7276bc3600231a300f2adba942672b79_cryptolocker.exe
Resource
win7-20231215-en
5 signatures
150 seconds
General
- Target 2024-01-25_7276bc3600231a300f2adba942672b79_cryptolocker.exe
- Size 39KB
- Sample240125-s2mnsshhb2
- SHA256 483ff53cc00c6235f8b83e319990075fc0865419c19c5eebd47c911f89e8b6a8
- MD5 7276bc3600231a300f2adba942672b79
- SHA1 a4e015f479691a8ebdc01c430583f29c0358cb4b
- SHA512 6a52aad1c931b6bb7430cc5d3d565d84a53c3f06a18a4a609726954120e50c65e05d17810dea32780ed8c21ea3cf7975d3efb1d61f5eb252d1b5247832933b9b
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDDw3sCu5b+rc5vrp:bgGYcA/53GADw8Clrc7
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023127-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 2024-01-25_7276bc3600231a300f2adba942672b79_cryptolocker.exe - Executes dropped EXE 1 IoCs
pid Process 3268 hasfj.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 4008 wrote to memory of 3268 4008 2024-01-25_7276bc3600231a300f2adba942672b79_cryptolocker.exe 88 PID 4008 wrote to memory of 3268 4008 2024-01-25_7276bc3600231a300f2adba942672b79_cryptolocker.exe 88 PID 4008 wrote to memory of 3268 4008 2024-01-25_7276bc3600231a300f2adba942672b79_cryptolocker.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-01-25_7276bc3600231a300f2adba942672b79_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_7276bc3600231a300f2adba942672b79_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4008 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:3268
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 39KB
- SHA256 c2dbc92d10e4900ccb46e6e8b0884402b618cc2946bc2c66d90666d00168a8ff
- MD5 c84c8eb182f9ef6ed99097cc356f4803
- SHA1 926d86cf38a18014b330e1d1a509b6b2a49e2f6d
- SHA512 54e49c220619d1a76f8100d405309ce0da5eb43a1f8005bb1288f9be9577ac02c0ab7b439cc7f426fc334ac8e02dea179b4a70a28edd305159e6d4a97d64e6bb
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDDw3sCu5b+rc5vr0:bgGYcA/53GADw8ClrcC
- MD5 SHA1 SHA512 SSDEEP