Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
28/07/2026, 01:03
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-28_caf2f45d17f0ba43bebd32ab874a81ba_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-28_caf2f45d17f0ba43bebd32ab874a81ba_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-28_caf2f45d17f0ba43bebd32ab874a81ba_cryptolocker_elex.exe
- Size 1.0MB
- Sample260728-belpjsverc
- SHA256 5968edeba08b0e671a6672fde43b27cfc16d5b6ee016bc8616462ae04fb35c9f
- MD5 caf2f45d17f0ba43bebd32ab874a81ba
- SHA1 54565b496eb961c997b7046f47d2a9041b13f596
- SHA512 8b1a237d321f95db5bdfa030b2bafd51442e84eeb0f6e32edd79ac1de8c8348eedc2d415add9869075a09889fe0d1986ae5456c57182a2754f94936c411495f1
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqN:bGbvflT/ZFIjBzhxwOgXKarY1iBM
- TLSH T11C2519BE74972645FE624C307FECF660DB57287ACB6BDAF24595A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4768-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b00000001b315-13.dat CryptoLocker_rule2 behavioral2/memory/4528-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4528-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4528 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 2026-07-28_caf2f45d17f0ba43bebd32ab874a81ba_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 4768 wrote to memory of 4528 4768 2026-07-28_caf2f45d17f0ba43bebd32ab874a81ba_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-28_caf2f45d17f0ba43bebd32ab874a81ba_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-28_caf2f45d17f0ba43bebd32ab874a81ba_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4768 -
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:4528
-
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 5ce99266cf76339dc816e28fd5ed3ad19df194982ffb8107f25838bb95949077
- MD5 71b3a89ad1e1e7d2df286b90a2686a60
- SHA1 89ccc03976eaa651d675f4f74c9505f1f5a6222a
- SHA512 76de51d5d162161a54d385746a39c3ecb4b4fb553ce8a56d3c18c8e11d62b97c4075e5164eeb4ef316c9b8d389b330075adee46c0535e699eeb8b012d77c8c30
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqI:bGbvflT/ZFIjBzhxwOgXKarY1iBh
- TLSH T1ED2509BE74972645FE624C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH