Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
02/08/2026, 04:16
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-01_3f3a78bdaafcf12b82d5dcc599e61194_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-01_3f3a78bdaafcf12b82d5dcc599e61194_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-01_3f3a78bdaafcf12b82d5dcc599e61194_cryptolocker_elex.exe
- Size 47KB
- Sample260802-ev3jsach59
- SHA256 429c0cd8cd1a49658882fffbce9dc750b632993577081877d255aef51df9f843
- MD5 3f3a78bdaafcf12b82d5dcc599e61194
- SHA1 1626698fba08993a0500d5e7341118d09b984f87
- SHA512 a117b2185cad8ca949eddf89e1e321563f602014215f6b48032aa297d3332a73d470d9a93b88231de6b7bcc73e337d39e04ef5c60c0662de98910260d851c0c9
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhuj:bgGYcA/53GAGgIvF7Ekj
- TLSH T1452322387FE52932E37BDFB586F691C6B975B8223D16980D40CA43444833F65ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/5060-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0013000000024353-13.dat CryptoLocker_rule2 behavioral1/memory/3356-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3356-25-0x0000000008000000-0x000000000800A000-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-1-5-21-2937465464-4167303362-2236413517-1000\Control Panel\International\Geo\Nation 2026-08-01_3f3a78bdaafcf12b82d5dcc599e61194_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 3356 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 2026-08-01_3f3a78bdaafcf12b82d5dcc599e61194_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 5060 wrote to memory of 3356 5060 2026-08-01_3f3a78bdaafcf12b82d5dcc599e61194_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-01_3f3a78bdaafcf12b82d5dcc599e61194_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-01_3f3a78bdaafcf12b82d5dcc599e61194_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5060 -
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:3356
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 47KB
- SHA256 f912ef08d715a20e7e41ce11df7459424ec0a32f444685a5a42787bf494f79a7
- MD5 44eb4db3404622fcc207b4d1423dd3b3
- SHA1 dcb719e5d3a110cf2c07d502e3d22376325d3056
- SHA512 63819751c4cd99686af02e76f1d307fa21b585b2e95238a4bab5496365c204114d9e17bcd669a80b76b065a823b93b29a7a8f5eeb7a2f7db275cccaa93a1859c
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhuA:bgGYcA/53GAGgIvF7EkA
- TLSH T1492322387FE52932E37BDFB586F691C6B975B8223D16980D40CA43444833F65ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH