Analysis
-
max time kernel
150s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
14/05/2024, 22:33
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-14_f6a99eec559615c90703788cbbebf76b_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-14_f6a99eec559615c90703788cbbebf76b_cryptolocker.exe
Resource
win10v2004-20240508-en
General
-
Target
2024-05-14_f6a99eec559615c90703788cbbebf76b_cryptolocker.exe
-
Size
44KB
-
MD5
f6a99eec559615c90703788cbbebf76b
-
SHA1
7489109864197831705b6acff1f2f3ad3c6a89fc
-
SHA256
bba93607627e91f35f5ded654c3d2aa57ef6065fcd92a3b1313735c60aa0bc1d
-
SHA512
8b169d51bc44004feb3ea75c32599165d5a10fff5af81cdbd2afa8d53df4a9c4939f955df178e7c2b2e9656bf39aafd5e83eefc5628b2c33c4ef7d3d94356775
-
SSDEEP
384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUpaSw0:bm74zYcgT/Ekn0ryfjR10
Malware Config
Signatures
-
Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/4344-0-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000500000002328f-13.dat CryptoLocker_rule2 behavioral2/memory/4344-16-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4608-17-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4608-27-0x0000000008000000-0x000000000800D000-memory.dmp 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-05-14_f6a99eec559615c90703788cbbebf76b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4608 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 4344 wrote to memory of 4608 4344 2024-05-14_f6a99eec559615c90703788cbbebf76b_cryptolocker.exe 82 PID 4344 wrote to memory of 4608 4344 2024-05-14_f6a99eec559615c90703788cbbebf76b_cryptolocker.exe 82 PID 4344 wrote to memory of 4608 4344 2024-05-14_f6a99eec559615c90703788cbbebf76b_cryptolocker.exe 82
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-05-14_f6a99eec559615c90703788cbbebf76b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-14_f6a99eec559615c90703788cbbebf76b_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4344 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:4608
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
44KB
MD5519562d543302867569e072c1e4fb99e
SHA16ce80fc5fb7e84e07fc94cc32bc9fdd5f20036db
SHA2563af0840c0765723c3eed2e9e79f317220638faba8729fd4400409e9226e21051
SHA512d274aa3dfd10c78f3b58afb169bb4c17f33a4ec3e4acdc709d4c09aa59e1a443a202fab51062f09ea86a1668feb5d7da8cb3425cd6c123f040c694dec4258158