Analysis
-
max time kernel
126s -
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
09/06/2024, 07:34
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-09_b2e65c6612e492dd5a6dde83c8bcc69d_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-09_b2e65c6612e492dd5a6dde83c8bcc69d_cryptolocker.exe
Resource
win10v2004-20240508-en
General
-
Target
2024-06-09_b2e65c6612e492dd5a6dde83c8bcc69d_cryptolocker.exe
-
Size
43KB
-
MD5
b2e65c6612e492dd5a6dde83c8bcc69d
-
SHA1
26daaf9dfcb3dbf107df4b4f108231a2790f4b5e
-
SHA256
58a72dbd3104b672f2d0d2f4ea941a9eb5a9edd695b987058e71a62cf10f6777
-
SHA512
5f3318d102262a19b3822361bf92875c1e841c4ab9d9bd06e14242488c73561318d96a48b787a550fdf86d9624047e557c191b5af5845513ce1af8fca4200471
-
SSDEEP
384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUkP:bm74zYcgT/EkM0ryfjdP
Malware Config
Signatures
-
Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/4804-0-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000002328e-13.dat CryptoLocker_rule2 behavioral2/memory/4804-18-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4444-17-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4444-27-0x0000000008000000-0x000000000800D000-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 2024-06-09_b2e65c6612e492dd5a6dde83c8bcc69d_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4444 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 4804 wrote to memory of 4444 4804 2024-06-09_b2e65c6612e492dd5a6dde83c8bcc69d_cryptolocker.exe 81 PID 4804 wrote to memory of 4444 4804 2024-06-09_b2e65c6612e492dd5a6dde83c8bcc69d_cryptolocker.exe 81 PID 4804 wrote to memory of 4444 4804 2024-06-09_b2e65c6612e492dd5a6dde83c8bcc69d_cryptolocker.exe 81
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-09_b2e65c6612e492dd5a6dde83c8bcc69d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-09_b2e65c6612e492dd5a6dde83c8bcc69d_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4804 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:4444
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
43KB
MD57d06580faa717ce35a4ee67fd30f608b
SHA1d9331245195b818c6d71768d132c961be98ea3d8
SHA25661ee492bb71ed3357a9edc92fa7941d9c419969d122ecd88210bc3bd159055d2
SHA5128c0f257a46003eafbada48d8b2ffbfc120f1858d5e8d1f845ca1c8a6722bb61ed987cd8327afcb7d72b8ad32b8ca644372b2809d08ef27cba8ce5343940525f2