Analysis
- max time kernel
150s - max time network
154s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
07/05/2026, 02:49
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-07_bf65d694595a0348b373794a47c1ddfa_cryptolocker_elex.exe
Resource
win10v2004-20260130-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-07_bf65d694595a0348b373794a47c1ddfa_cryptolocker_elex.exe
Resource
win11-20260130-en
5 signatures
150 seconds
General
- Target 2026-05-07_bf65d694595a0348b373794a47c1ddfa_cryptolocker_elex.exe
- Size 48KB
- Sample260507-dbcctaat8p
- SHA256 b4c304e0e387dbf3020859f375ad679ae7c7bc41bee47ccc2616e87b09b2336c
- MD5 bf65d694595a0348b373794a47c1ddfa
- SHA1 12360d13992c0992aa755c06c6ec7dc7e609bb73
- SHA512 c9a1e2d1584bbb0d1a16bfb4725b19e604cb3920200fd4436dc7c95deddd3650d31f5c3f7602e77af0cbc5c17d122d6d32bc2814a22312815d77b2615cea603d
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXZwkR:bgGYcA/53GAGgIvFbd
- TLSH T1822333387FE62972E37BDFB586F651C6B97578223D16980D40CA43844833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3276-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x002600000002b20d-13.dat CryptoLocker_rule2 behavioral2/memory/2876-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2876-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2876 hasfj.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-05-07_bf65d694595a0348b373794a47c1ddfa_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hasfj.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 3276 wrote to memory of 2876 3276 2026-05-07_bf65d694595a0348b373794a47c1ddfa_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-07_bf65d694595a0348b373794a47c1ddfa_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-07_bf65d694595a0348b373794a47c1ddfa_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3276 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2876
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 48KB
- SHA256 40aaf66856cdc124a7cb2cd21b23166332e52c6f4f9c1a1a30a43fb8529feb79
- MD5 db135f1a5663e800f6891d74e547a6a0
- SHA1 56c02c6e1e3c5742eb0b83ac0b5b8eb646b7fc6e
- SHA512 1c5af6c1c3e25f489fe026338ea761d912ef250c27e3083f10ad808a231da8c10e04b13fcdec54d4a13180fa7a6ca9a73c3351417851dfe41be5f979d334af39
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXZwkC:bgGYcA/53GAGgIvFbW
- TLSH T1AF2333387FE62972E37BDFB586F651C6B97578223D16980D40CA43844833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH