Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
02/08/2026, 02:43
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-02_b2d488669372dc618c26132e06cadd89_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-02_b2d488669372dc618c26132e06cadd89_cryptolocker_elex.exe
Resource
win11ltsc2024-20260710-en
5 signatures
150 seconds
General
- Target 2026-08-02_b2d488669372dc618c26132e06cadd89_cryptolocker_elex.exe
- Size 1.0MB
- Sample260802-c7w7escb32
- SHA256 b9ee010f13cca7fc479f88d2ba1887442eb6ee2c889538cdd482d52fe88e0f4d
- MD5 b2d488669372dc618c26132e06cadd89
- SHA1 3e24a2fec319cbc45a733b1dbbb33114b7d5b9de
- SHA512 3b39c15deedaf8edfde620b5d2c6ddc38fdf8e01ca1a336938d8237ff5a3898a2b12a7a102a7f2588cb781a9c03675c10ae2f93b3bcba88a1a1071ff3c508abb
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqC:bGbvflT/ZFIjBzhxwOgXKarY1iBX
- TLSH T1212509BE74972645FE624C307FECF660DB57287ACB6BDAF24595A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4908-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000019cb5-13.dat CryptoLocker_rule2 behavioral2/memory/4544-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4544-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4544 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 2026-08-02_b2d488669372dc618c26132e06cadd89_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 4908 wrote to memory of 4544 4908 2026-08-02_b2d488669372dc618c26132e06cadd89_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-02_b2d488669372dc618c26132e06cadd89_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-02_b2d488669372dc618c26132e06cadd89_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4908 -
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:4544
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 1.0MB
- SHA256 04672b52f571acc997334a02ab228b91ca2d3e86922a39af62dc9b872097989e
- MD5 7c1f9388906e83b32d9e71d89f0676ff
- SHA1 ec2f65494a8ff13e20f67c260b0e9f9e684a3d86
- SHA512 a1e88dfc3762a4d6752583dc31bdebecbe4879537bb73cb0d8a7a167fc8fee190a763eb676b4cf69b9521807f8760ed409bd84eb048cf3a1cfb6b7edda8cdfd1
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqM:bGbvflT/ZFIjBzhxwOgXKarY1iBF
- TLSH T1032509BE74972645FE624C307FECF660DB57287ACB6BDAF24595A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH