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, 19:20
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_09ac1da7f9f50029475ff525ad039e75_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_09ac1da7f9f50029475ff525ad039e75_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_09ac1da7f9f50029475ff525ad039e75_cryptolocker_elex.exe
- Size 55KB
- Sample260820-x2c7ksfd72
- SHA256 29f4be72ef6e050cb233463fca28b4a8b54b68ec2053001b67eca0f6aaa4392f
- MD5 09ac1da7f9f50029475ff525ad039e75
- SHA1 7ddf29aa93751bc99c9fc5703e05bd1cf4c0ce51
- SHA512 45032e29ff58030f76968baf9a94cde1d59d4e72ae6855fe646cdc8255acbe42a4c200959878aae570d66c974c32877a22b640f6591275e969ab44889d7eba2e
- SSDEEP 768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4UsCOTcbJoICeAQ/z/eOCcLA71:bIDOw9a0DwitDkvmoIO0/iaA71
- TLSH T19B43853C6EE56972D2BBDAB6D9F651C7B930B4123E155C0E40CB43850C23F27ADA261E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4864-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a00000001b85c-13.dat CryptoLocker_rule2 behavioral2/memory/1128-19-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1128-20-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1128 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_09ac1da7f9f50029475ff525ad039e75_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 4864 wrote to memory of 1128 4864 2026-08-20_09ac1da7f9f50029475ff525ad039e75_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_09ac1da7f9f50029475ff525ad039e75_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_09ac1da7f9f50029475ff525ad039e75_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4864 -
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:1128
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 55KB
- SHA256 bb6a97aeaa6aa81ebebc4bd7c27c9121fd722951ba4ad89c2721228e231bb567
- MD5 e932119ebcbc479564f5156f17874c14
- SHA1 58579539eee54a6b3cb416873e449ee933dcac1a
- SHA512 667c73591136843b3bfe0d0f59199601f31d099380b491415f527b94dd3a6c2c58ae3dbf6d011db11ce58efb1b36637e42ebcfb6508f2fdf77062da4d5f66c7e
- SSDEEP 768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4UsCOTcbJoICeAQ/z/eOCcLA7S:bIDOw9a0DwitDkvmoIO0/iaA7S
- TLSH T12943853C6EE56972D2BBDAB6D9F651C7B930B4123E155C0E40CB43850C23F27ADA261E
- MD5 SHA1 SHA512 SSDEEP TLSH