Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
20/08/2026, 01:05
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_a9cae8e38951ccd787f021829660d3b7_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_a9cae8e38951ccd787f021829660d3b7_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_a9cae8e38951ccd787f021829660d3b7_cryptolocker_elex.exe
- Size 46KB
- Sample260820-bfzb2acp6t
- SHA256 16e9af0c5149ae424c34abb95e727eea19f23336ea0886c8c48bf808fb032f2b
- MD5 a9cae8e38951ccd787f021829660d3b7
- SHA1 4686dee9f7bc51c26ae38a32ac85eef816d20111
- SHA512 7b4aa31c4d7490f40818263cea5caa5845dd28d6cfef1c10f572b0e70eccd4c04e41a2bf239066b3ddd212314acff9fd818ce7801ddfc4b00cfe19996882b505
- SSDEEP 768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4UsCOTcbJoKvk:bIDOw9a0DwitDkvmoKvk
- TLSH T1ED23E93C6EE45872D3BB9AB699F251C6BC74B8123E154C0E44CB53850C22F27FDA261E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/4600-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d000000016cdc-13.dat CryptoLocker_rule2 behavioral2/memory/4176-25-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4176 lossy.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 2026-08-20_a9cae8e38951ccd787f021829660d3b7_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language lossy.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4600 wrote to memory of 4176 4600 2026-08-20_a9cae8e38951ccd787f021829660d3b7_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_a9cae8e38951ccd787f021829660d3b7_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_a9cae8e38951ccd787f021829660d3b7_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4600 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4176
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 46KB
- SHA256 c97d906543144c6b2d2538c90dfc4d6f88706ff568d9ed54dda54b5446b11ea2
- MD5 d8a10d8015b5bb899daf6284656d9d20
- SHA1 a341bc47e1462d07177a066cf254e96147e5d10d
- SHA512 49543de7e3aa8486afe52cc5138ad855cbbbf1f07f92a807b67a0a219d7c3563d4e9388d8dfe2e3d53bf03163d3350cf280cc035f296b84f636a0d49d6bd24ca
- SSDEEP 768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4UsCOTcbJoKv+:bIDOw9a0DwitDkvmoKv+
- TLSH T17D23E93C6EE45872D3BB9AB699F251C6BC74B8123E155C0E44CB53850C22F27FDA261E
- MD5 SHA1 SHA512 SSDEEP TLSH