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
12/06/2024, 18:43
Behavioral task
behavioral1
Sample
2024-06-12_b9ed6fd0642a149f0c9656564acd4ba8_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-12_b9ed6fd0642a149f0c9656564acd4ba8_cryptolocker.exe
Resource
win10v2004-20240508-en
General
-
Target
2024-06-12_b9ed6fd0642a149f0c9656564acd4ba8_cryptolocker.exe
-
Size
81KB
-
MD5
b9ed6fd0642a149f0c9656564acd4ba8
-
SHA1
bb7f6502ed863c6870f8566146cc660cadf76c2c
-
SHA256
c8edce37884bc1f858b8cbbdb1c84589ae098825a0921683a288a0b4eead90f4
-
SHA512
091ff3f2f88dcd18bf261632542a9d278e865d6a5fb696470bd6b3b7bb1f95563af2b02fccc2a7a39d069d08bccc2c0b9654b5cc4de3a5547f40f9d33dc61251
-
SSDEEP
1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7QF:zCsanOtEvwDpjR
Malware Config
Signatures
-
Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3244-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000002328e-13.dat CryptoLocker_rule2 behavioral2/memory/3244-24-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2452-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/3244-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000700000002328e-13.dat CryptoLocker_set1 behavioral2/memory/3244-24-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/2452-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral2/memory/3244-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/files/0x000700000002328e-13.dat UPX behavioral2/memory/3244-24-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/2452-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
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 2024-06-12_b9ed6fd0642a149f0c9656564acd4ba8_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2452 misid.exe -
resource yara_rule behavioral2/memory/3244-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x000700000002328e-13.dat upx behavioral2/memory/3244-24-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/2452-26-0x0000000000500000-0x0000000000510000-memory.dmp upx -
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 3244 wrote to memory of 2452 3244 2024-06-12_b9ed6fd0642a149f0c9656564acd4ba8_cryptolocker.exe 82 PID 3244 wrote to memory of 2452 3244 2024-06-12_b9ed6fd0642a149f0c9656564acd4ba8_cryptolocker.exe 82 PID 3244 wrote to memory of 2452 3244 2024-06-12_b9ed6fd0642a149f0c9656564acd4ba8_cryptolocker.exe 82
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-12_b9ed6fd0642a149f0c9656564acd4ba8_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-12_b9ed6fd0642a149f0c9656564acd4ba8_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3244 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2452
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
81KB
MD58d96957115eef55d0d913f1d3468ae2f
SHA14967a7775283ebf16415a30090c8823df7fb8d71
SHA256bc840d30275477115a405893af9512b080f5fa48eab5e26f20d512281b951aea
SHA512a613099dbf744f59161f1907b7d856c2c5f88ddd8f01fa1062e611ab993daf972663bc3b13a103d7601cc2ee7b04dc9b4fbda927944be5998f7b580d6bb6183d