Analysis
- max time kernel
150s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
04/08/2026, 07:56
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-08-04_299de6d5065e508bcce6d491da384fa4_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-04_299de6d5065e508bcce6d491da384fa4_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-08-04_299de6d5065e508bcce6d491da384fa4_cryptolocker_elex.exe
- Size 4.6MB
- Sample260804-js67eavble
- SHA256 fb41ce834633f87309809f5d7181173c680c1d661116ee04fd1428ce00e53840
- MD5 299de6d5065e508bcce6d491da384fa4
- SHA1 4cf8a1cae71e0a83bd8b60e7c5d369e59621a155
- SHA512 158c0bd68be665b723bf4fdecb01464db0915158359589449a9edd96500126697a2f3c82a58cc12e2f4edf37ca0913a71c401b71289b15c5b85c4c38a1721698
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTR:w/ZFIjBzF/ZFIjBzPEUusR
- TLSH T12D363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3124-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000001b1d0-13.dat CryptoLocker_rule2 behavioral2/memory/3276-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3276-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000800000001b1d0-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 3276 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 2026-08-04_299de6d5065e508bcce6d491da384fa4_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 3124 wrote to memory of 3276 3124 2026-08-04_299de6d5065e508bcce6d491da384fa4_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-04_299de6d5065e508bcce6d491da384fa4_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-04_299de6d5065e508bcce6d491da384fa4_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3124 -
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:3276
-
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 62c8e277241deb545565eff0a140ff95ac0989ddf0575ff1e5d4c3c536cc8832
- MD5 8dae6ddb5f0e048d499ebd1e166bbc90
- SHA1 7bd730b60a3347f30035f30198a614d71be97a8a
- SHA512 09f2ef2cdc30634bc3072eb42b24c6374f98b80dfc0031f5e048c5b8209a9c8289264c5133aede6d924d9f256f1d49465fb4d9f23a1a7759671c1909f6457888
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTg:w/ZFIjBzF/ZFIjBzPEUusg
- TLSH T1EE363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH