Analysis
- max time kernel
150s - max time network
147s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
04/06/2026, 00:45
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-06-04_42c1620d19079927570d1de98c7e57b4_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-06-04_42c1620d19079927570d1de98c7e57b4_cryptolocker_elex.exe
Resource
win11-20260513-en
6 signatures
150 seconds
General
- Target 2026-06-04_42c1620d19079927570d1de98c7e57b4_cryptolocker_elex.exe
- Size 4.6MB
- Sample260604-a4e3mags2y
- SHA256 acd9e064a2e2d430242196333606d60bf73519ab2154dd13c8e7e426a290f65b
- MD5 42c1620d19079927570d1de98c7e57b4
- SHA1 6ff61bcfa765a416b493732321d747364423e401
- SHA512 3f80c4a728d03f0c843e7e92ad0a658cbe2209cb02cdac36079ee1d8bdb5ffafb0c6499d5e636d42b471e92ce816ea5bf20aab87fed4e6ad36efc9c93f9088a3
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymT3:w/ZFIjBzF/ZFIjBzPEUus3
- TLSH T165263C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2380-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001d00000002b113-13.dat CryptoLocker_rule2 behavioral2/memory/4720-17-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4720-25-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x001d00000002b113-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 4720 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 2026-06-04_42c1620d19079927570d1de98c7e57b4_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 2380 wrote to memory of 4720 2380 2026-06-04_42c1620d19079927570d1de98c7e57b4_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-06-04_42c1620d19079927570d1de98c7e57b4_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-06-04_42c1620d19079927570d1de98c7e57b4_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2380 -
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:4720
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 4.6MB
- SHA256 f42171a75bc3ed2ee6f2b0ae055b4393e2739841de580afe86bea7c9f24c03cf
- MD5 dca98575aef42f9a67e0e58349a03335
- SHA1 597fcd9973a01d119b9e6a3aaf4bd4ff30bfb971
- SHA512 05e0b29d2bc013bcafdced7f0d17d7ae9af51028735d1faa7596001736993632c935b8c7ef1d4cc4ca3db7e5269a221508c88f5812ce65ee25233325af42c1da
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTZ:w/ZFIjBzF/ZFIjBzPEUusZ
- TLSH T107263C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH