Analysis
- max time kernel
138s - max time network
153s - 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, 15:48
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2024-01-25_bea72fe5cfffbac7cefe35111301cc8c_cryptolocker.exe
Resource
win7-20231129-en
7 signatures
150 seconds
General
- Target 2024-01-25_bea72fe5cfffbac7cefe35111301cc8c_cryptolocker.exe
- Size 126KB
- Sample240125-s8xscaaad2
- SHA256 ecb3e4b329393c574be96d2eb65d1a972455080db4f8ee9f6d296aadec115a30
- MD5 bea72fe5cfffbac7cefe35111301cc8c
- SHA1 ebb88b7d25c93284d1855d3772853d4c5327afff
- SHA512 b6c522a231f048ba2ab664ba2562ebdf5323cfe8258cbaaf9c9203efa84ed014b2aa3e6209567e5d44befcb896c7b8280398500ab39d37935021e7391a52587f
- SSDEEP 1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//G:vCjsIOtEvwDpj5H9YvQd2RU
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000700000002312a-12.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000700000002312a-12.dat CryptoLocker_set1 - Checks computer location settings 2 TTPs 2 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_bea72fe5cfffbac7cefe35111301cc8c_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation misid.exe - Executes dropped EXE 1 IoCs
pid Process 4612 misid.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 1936 wrote to memory of 4612 1936 2024-01-25_bea72fe5cfffbac7cefe35111301cc8c_cryptolocker.exe 91 PID 1936 wrote to memory of 4612 1936 2024-01-25_bea72fe5cfffbac7cefe35111301cc8c_cryptolocker.exe 91 PID 1936 wrote to memory of 4612 1936 2024-01-25_bea72fe5cfffbac7cefe35111301cc8c_cryptolocker.exe 91
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-01-25_bea72fe5cfffbac7cefe35111301cc8c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_bea72fe5cfffbac7cefe35111301cc8c_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1936 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:4612
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\misid.exe
- Size 126KB
- SHA256 70554f2671ac2d9e2f908c7201fde7760a21be2af8f78f82ca4780fe56042389
- MD5 80e744738fe4f81ced6ca961730d0f52
- SHA1 ef90ae2e84bbb473b8c3eed246676a2f7ae3651f
- SHA512 dfca782e882e94f3f803c072933649acb13b14ecf3ff13d48de6eaff88fa1882f3a33bb3a08f70b77b03e21fa145565b2bcc10b604b98b68ba28e9323f7cc0c4
- SSDEEP 1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//T:vCjsIOtEvwDpj5H9YvQd2RN
- MD5 SHA1 SHA512 SSDEEP