Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
08/09/2026, 17:14
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-09-08_4dc83388faf35126a0db4b27b4bedc24_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-08_4dc83388faf35126a0db4b27b4bedc24_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-09-08_4dc83388faf35126a0db4b27b4bedc24_cryptolocker_elex.exe
- Size 1.0MB
- Sample260908-vschksvgpb
- SHA256 b8fe45f92e2819f924f67aef221fa2f1be3adcfba0169f6b66d0a8879d3cb78b
- MD5 4dc83388faf35126a0db4b27b4bedc24
- SHA1 0127104acb6fe35352ebc07c8768acf34e62c512
- SHA512 45d3dc3eed1a7c348123f863553009bfff02a3220180402d5ae671c6a2d51b838c5e417f8ebbb390eb2259a1b995a4300d2908d2b62aabdc37ec206d2b3c2d97
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqq:bGbvflT/ZFIjBzhxwOgXKarY1iBv
- TLSH T1D92509BE74972645FE625C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1472-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000024384-13.dat CryptoLocker_rule2 behavioral1/memory/2940-17-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2940-19-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2370214745-1838013427-2987045292-1000\Control Panel\International\Geo\Nation 2026-09-08_4dc83388faf35126a0db4b27b4bedc24_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 2940 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 2026-09-08_4dc83388faf35126a0db4b27b4bedc24_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 1472 wrote to memory of 2940 1472 2026-09-08_4dc83388faf35126a0db4b27b4bedc24_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-08_4dc83388faf35126a0db4b27b4bedc24_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-08_4dc83388faf35126a0db4b27b4bedc24_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1472 -
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:2940
-
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 d9663caed0b3d600fb3083280b16693ee8ea781990e416728de07399d9c20ee1
- MD5 92819a14a52f23fa536cf164ba2bb8dc
- SHA1 05e34aea68f8f3860b245621de1c4676e6f233be
- SHA512 6391902d8985bc9e5a41afeadbd9cfffda035e18e623699f5fd726ced820be542be1c2ddfaa61d82d1ba317a5765a56cb84f4384237171e0ce9c96cd66b7bbb9
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqO:bGbvflT/ZFIjBzhxwOgXKarY1iBL
- TLSH T1622509BE74972645FE625C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH