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
01/07/2026, 01:50
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-01_4ec8b207d71d6028c085697d3d6ea15e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-01_4ec8b207d71d6028c085697d3d6ea15e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260629-en
18 signatures
150 seconds
General
- Target 2026-07-01_4ec8b207d71d6028c085697d3d6ea15e_cryptolocker_elex.exe
- Size 46KB
- Sample260701-b9cecsd121
- SHA256 f618996cb16356a433b9eefd99cb50bd95ed3e9bcb4e02c596050d2884729270
- MD5 4ec8b207d71d6028c085697d3d6ea15e
- SHA1 93ab095cadb813626be126a210c1fcc044d8d5e5
- SHA512 0f837f4d8d6a410036018fdafd83516aa4d4e436b2e6af7dbf61ee90c65d590d698ea11d6ea80626fd4482538a9b227f77b566e0b2ebd6f7f32e5830e248c0b0
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhw:bgGYcA/53GAGgIvF7ES
- TLSH T1622322387BE52932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4620-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0008000000024454-13.dat CryptoLocker_rule2 behavioral1/memory/3784-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3784-25-0x0000000008000000-0x000000000800A000-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-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation 2026-07-01_4ec8b207d71d6028c085697d3d6ea15e_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 3784 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 2026-07-01_4ec8b207d71d6028c085697d3d6ea15e_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 4620 wrote to memory of 3784 4620 2026-07-01_4ec8b207d71d6028c085697d3d6ea15e_cryptolocker_elex.exe 84
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-01_4ec8b207d71d6028c085697d3d6ea15e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-01_4ec8b207d71d6028c085697d3d6ea15e_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4620 -
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:3784
-
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 e715a608bd0646c5e54f06a5ca65964989d18f619162039db329c8416dd5da3f
- MD5 ddf1885fe379cdcf8d4f36bee19d14f3
- SHA1 1e0edf7b40a516f886d816770e0fd45a9f2f55a7
- SHA512 19a8767ccad519da52bbd854388921570b1e7a894125aaec8383d82593b217cc4232f09c171c4fe7b1dce8b7f22b8b2352f7c72d147e627eb80d0f6392b2a0f8
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEh9:bgGYcA/53GAGgIvF7Er
- TLSH T1A72332387BE52932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH