Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
02/08/2026, 04:12
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-01_58217fc3751143d3533654376c9b7dfe_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-01_58217fc3751143d3533654376c9b7dfe_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-01_58217fc3751143d3533654376c9b7dfe_cryptolocker_elex.exe
- Size 46KB
- Sample260802-es1bmsch46
- SHA256 b3d8528dccfa54a6a0e5f27aefbfccdee8a42abcf7ef736aa0dd4f38f6c91b84
- MD5 58217fc3751143d3533654376c9b7dfe
- SHA1 cf8505ec1bbec5f929c78ce34d289c98fa851a9f
- SHA512 ea368107020c7a5773ac233a09452303ec04c64621940756cb005b7e9600fe4cffb11a0616a3a1de377f95c6864a38c7ba5da0c2fe0b650f1633d7a4fde8f88d
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXv6V:bgGYcA/53GAGgIvFY
- TLSH T1062334387FE62972D37BDFB586F691C6B93578223D16980D40CA53444833F66ECA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4700-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000500000001b851-13.dat CryptoLocker_rule2 behavioral2/memory/3180-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3180-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3180 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_58217fc3751143d3533654376c9b7dfe_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 4700 wrote to memory of 3180 4700 2026-08-01_58217fc3751143d3533654376c9b7dfe_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-01_58217fc3751143d3533654376c9b7dfe_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-01_58217fc3751143d3533654376c9b7dfe_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4700 -
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:3180
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 46KB
- SHA256 6eda915c8a3f61ce1861ed32bca603ad36e5b897594cf1f816600e19766aa986
- MD5 63adfa01efce670b7b77173a6b73d114
- SHA1 3fcabfe5a4d1a8acde76caf845bf5e9aafcfb567
- SHA512 af8c9fba43cd02498c5f833a0bdb2e8a0e686cc6ebb8a047f836b489501474b2d426b4eaed09896aae7eb9d820cf9ca6c24fa5df444abb240941981d34b6467b
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXv6B:bgGYcA/53GAGgIvFU
- TLSH T1D92334387FE62972D37BDFB586F691C6B97578223D16980D40CA43444833F66ECA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH