Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
30/09/2026, 15:27
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-09-29_ea9eda6066f93ea9764111dfec2f44b7_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-29_ea9eda6066f93ea9764111dfec2f44b7_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
6 signatures
150 seconds
General
- Target 2026-09-29_ea9eda6066f93ea9764111dfec2f44b7_cryptolocker_elex.exe
- Size 1.0MB
- Sample260930-sv3rfayare
- SHA256 a173623e47e123e12fee0f7db8d67addf078e92ffac09fac2d849c8f7bc5ed84
- MD5 ea9eda6066f93ea9764111dfec2f44b7
- SHA1 7c07aad6fbff661b6bc668741d9f5d40fb117da7
- SHA512 9ba6e9f238b9f8b8ad1d230482502bf309cb3b3f54da6749900395879193c09bdb72189e9ecff362ef511666b99f9db89a5059a2daa55a9c4d1b9f53a65d5d33
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqb:bGbvflT/ZFIjBzhxwOgXKarY1iBO
- TLSH T1192509BE74972645FE625C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3432-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00160000000115b2-13.dat CryptoLocker_rule2 behavioral2/memory/5432-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5432-20-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5432 hasfj.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname hasfj.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain hasfj.exe - 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 2026-09-29_ea9eda6066f93ea9764111dfec2f44b7_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 3432 wrote to memory of 5432 3432 2026-09-29_ea9eda6066f93ea9764111dfec2f44b7_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-29_ea9eda6066f93ea9764111dfec2f44b7_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-29_ea9eda6066f93ea9764111dfec2f44b7_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3432 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
PID:5432
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 1.0MB
- SHA256 80d1891390203b4de4fcfcf6f983f1a10fee3164c0fccbff7160c4086862b6f6
- MD5 5d71d9d15c7e02615931178786f7edb4
- SHA1 0a06391db968f1939d08c8dad265190eeb383a5b
- SHA512 8e7f424f73a1f0dc2b5ce5d25756435f73bce4acaf0e4a4b8d619ba9b3813624f33319c68a610ecb250e8f2934b45c626ba04c0e69034191ece6c1ac535bc032
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqg:bGbvflT/ZFIjBzhxwOgXKarY1iBx
- TLSH T1F32509BE74972645FE625C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH