Analysis
- max time kernel
150s - 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
13/06/2024, 04:29
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2024-06-13_7fe0192c4c4fec779a27b360aeae2e0c_cryptolocker.exe
Resource
win7-20240508-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-06-13_7fe0192c4c4fec779a27b360aeae2e0c_cryptolocker.exe
Resource
win10v2004-20240508-en
6 signatures
150 seconds
General
- Target 2024-06-13_7fe0192c4c4fec779a27b360aeae2e0c_cryptolocker.exe
- Size 44KB
- Sample240613-e399laxgmp
- SHA256 7c72b66856bffff22064123902951cc51b7ec954d2cf3ddc34bbb52989de3133
- MD5 7fe0192c4c4fec779a27b360aeae2e0c
- SHA1 e6cb3c21419413198e6cb4ee6ab15820d4ccee61
- SHA512 7974e2bcdc79d23d3f386b249283f53fe107d7657620bbc6bf1c6f5a5a20abb0c8110235b0a5ef07f220e1da7a2350f06f7d18d482438c2c3e9487211c4a2f29
- SSDEEP 768:nf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGWXOQ69zbjlAAp:f1KhxqwtdgI2MyzNORQtOflIwoHNV2XD
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023278-12.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023278-12.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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation 2024-06-13_7fe0192c4c4fec779a27b360aeae2e0c_cryptolocker.exe - Executes dropped EXE 1 IoCs
pid Process 3012 hurok.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 2244 wrote to memory of 3012 2244 2024-06-13_7fe0192c4c4fec779a27b360aeae2e0c_cryptolocker.exe 82 PID 2244 wrote to memory of 3012 2244 2024-06-13_7fe0192c4c4fec779a27b360aeae2e0c_cryptolocker.exe 82 PID 2244 wrote to memory of 3012 2244 2024-06-13_7fe0192c4c4fec779a27b360aeae2e0c_cryptolocker.exe 82
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-13_7fe0192c4c4fec779a27b360aeae2e0c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_7fe0192c4c4fec779a27b360aeae2e0c_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2244 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Executes dropped EXE
PID:3012
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hurok.exe
- Size 45KB
- SHA256 fd765964064341a9cc85c54f5c06e5fbc281d5f143f6b78fc2fe6d468b043cf5
- MD5 803d8db64fc4efb58c41d855f6238d47
- SHA1 65253be6581bdf60d620a4a62df82c9faafbd2c2
- SHA512 3bb9335466dd4848446a715792c604a28a8b491cb90dbe5120ef253cea02b3018b436d29e8b27e5a52c0bfb41abe3010bfd5a23d73071c39dd790a18adb2cbd4
- SSDEEP 768:nf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGWXOQ69zbjlAAi:f1KhxqwtdgI2MyzNORQtOflIwoHNV2X8
- MD5 SHA1 SHA512 SSDEEP