Analysis
-
max time kernel
149s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
27/01/2024, 01:04
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe
Resource
win10v2004-20231215-en
General
-
Target
2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe
-
Size
48KB
-
MD5
e51c8b7afa63779be5b9ae1f05fe10c7
-
SHA1
2c56b72618c731c67793109bb577f168a29694ab
-
SHA256
376317edfed56db388d025c457cf33cc78c0cbe8c58424452811e67c7d00987e
-
SHA512
4c9c6565bea03e88d7da64c36b4b5b8f73169daf5fb984f2dbb1226d3e3e3d4b37f260a3b95eb281f06f64427adb1e8a4562f1f93fc733f5027023f01537a05b
-
SSDEEP
1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakNfA:V6a+pOtEvwDpjH
Malware Config
Signatures
-
Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000600000002323e-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000600000002323e-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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation 2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2132 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 3976 wrote to memory of 2132 3976 2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe 88 PID 3976 wrote to memory of 2132 3976 2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe 88 PID 3976 wrote to memory of 2132 3976 2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3976 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2132
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
48KB
MD51ae9837f4b4cf003617b83a70b55905f
SHA1b047fcb2f54ce5170c8339a19aabc4bfcdc17a59
SHA256c0c403413af2028877c4e5392265319b1e7011b59fd10daac028c058b160ed39
SHA5126c5826d41f25b89e6a727717aac53e59832a97054b642a1fa38459dcdfd42d8ed5f4310edece2307440b2075548648e5a1b4464471ba07ccc0a3b9d4d0f469f8