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
10/08/2026, 00:00
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-09_37259c5d8e1b01f6890419a9a915f23a_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_37259c5d8e1b01f6890419a9a915f23a_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-09_37259c5d8e1b01f6890419a9a915f23a_cryptolocker_elex.exe
- Size 52KB
- Sample260810-aaqbhaxfpd
- SHA256 98d6a01dfd714e1a20f07d8a07d3cb6659a11fb2f56d421a054ffd3e1eb2fd27
- MD5 37259c5d8e1b01f6890419a9a915f23a
- SHA1 dd948af007bb5c0ac8f0e2d8883ebd069a13f2d5
- SHA512 a0951c3383f0b88cce6ec71cab1389d1f23408ef4411a3370c477aac51754847071260a2ccbcb8d116add0b6ee49b874ebd15beb94bc59a655af8ed58844a81c
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycX:bgGYcA/53GAGgIvFW17R
- TLSH T1A33311387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4612-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000001b867-13.dat CryptoLocker_rule2 behavioral2/memory/4664-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4664-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4664 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 hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-09_37259c5d8e1b01f6890419a9a915f23a_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4612 wrote to memory of 4664 4612 2026-08-09_37259c5d8e1b01f6890419a9a915f23a_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_37259c5d8e1b01f6890419a9a915f23a_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_37259c5d8e1b01f6890419a9a915f23a_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4612 -
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:4664
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 52KB
- SHA256 63d5214d86bf02e86fb5b1820d9c1068ec18e095cf9585d86665498e87b4eeb9
- MD5 6d47d3b1b437e70c52e687c54fa7d4a3
- SHA1 1921da5ce6ffbce03ada6ae5a9a695225b546596
- SHA512 1ee3c99db7380c21df444f73c6f61dc9b2e509043302419c705b28f02eac257be7b8d6aab8a6c6d1a9251b28a5c106dcfe6581539fa3a1df6b4cd4739cd2e681
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycM:bgGYcA/53GAGgIvFW172
- TLSH T1AD3311387FE52932E37BDFB586F691C6B935B8223D16980D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH