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, 18:51
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-09-29_88873ca19ced8464c92b1d08ff28dfb7_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-29_88873ca19ced8464c92b1d08ff28dfb7_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
6 signatures
150 seconds
General
- Target 2026-09-29_88873ca19ced8464c92b1d08ff28dfb7_cryptolocker_elex.exe
- Size 1.0MB
- Sample260930-xhz71azdpg
- SHA256 4e609ac070a0e64477f0cead4f227507cfc4fa830a60f156ce7388c60a2017bc
- MD5 88873ca19ced8464c92b1d08ff28dfb7
- SHA1 9802e0190a1257cf2d59b65fef456640a2794509
- SHA512 207e9234e354ecf2a11bf3fd6cfbd896bb015687367fff4f3b40d525f9f27a6cabf63a34c2b5c2b07200b0e6071f2d69d55ab35623e0c10710ce5665f8e84ddc
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqH:bGbvflT/ZFIjBzhxwOgXKarY1iBy
- TLSH T1CB2508BE74D72645FE625C307FECB660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5560-9-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000500000000053e-13.dat CryptoLocker_rule2 behavioral2/memory/5444-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5444-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5444 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_88873ca19ced8464c92b1d08ff28dfb7_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 5560 wrote to memory of 5444 5560 2026-09-29_88873ca19ced8464c92b1d08ff28dfb7_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-29_88873ca19ced8464c92b1d08ff28dfb7_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-29_88873ca19ced8464c92b1d08ff28dfb7_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5560 -
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:5444
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵PID:2544
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 74670d0c575550dfa9a62304f79b675cebc663a7131aedcefcfb2bf78efb0822
- MD5 3a2195fbcbd411779d288d4cfcc72641
- SHA1 a0cc4bac60e3ad1fa3623af8989d007ab87f3d07
- SHA512 70ffd445693e7db4d3f78db2681ddb4c29609c898f24314ac5c1fc397b3722eaa0d065e76e4337e052c23a518e944826985b14e93c9a339d99c200714d824702
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPq1:bGbvflT/ZFIjBzhxwOgXKarY1iBc
- TLSH T19A2509BE74D72645FE625C307FECB660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH