Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
27/07/2026, 22:43
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-27_cf7c8d9b6074f163dc4f75fb50d53f01_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-27_cf7c8d9b6074f163dc4f75fb50d53f01_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-27_cf7c8d9b6074f163dc4f75fb50d53f01_cryptolocker_elex.exe
- Size 50KB
- Sample260727-2npqnssfmd
- SHA256 f59b3756032ca26a1b7b4283f5cd5c933e468d4fbcc7df8069d9816e08556d59
- MD5 cf7c8d9b6074f163dc4f75fb50d53f01
- SHA1 1e3b5543071564830a68cb6afaaa4a0b0967e9f8
- SHA512 99b1e98f34709bde55a32003297f4bed0e7a6f3922b5050044fc412e0661dd21a85171a6097ff999bfbbc5a45f78dd129c05f6e899194d28d8bc18703d291ded
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXZwkX51:bgGYcA/53GAGgIvFb11
- TLSH T1D43322387FE52972E37BDFB586F651C6B935B8223D16980D40CA43444833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5640-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0009000000019cc1-13.dat CryptoLocker_rule2 behavioral2/memory/4904-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4904-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4904 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 2026-07-27_cf7c8d9b6074f163dc4f75fb50d53f01_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 5640 wrote to memory of 4904 5640 2026-07-27_cf7c8d9b6074f163dc4f75fb50d53f01_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-27_cf7c8d9b6074f163dc4f75fb50d53f01_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-27_cf7c8d9b6074f163dc4f75fb50d53f01_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5640 -
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:4904
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵PID:4108
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 50KB
- SHA256 bab30c071646213e7a8d5de61e33ee65f420f9bd5bacbd049cd82f5f8142b193
- MD5 87087fc56b92b532367c0f7c7e4f9d76
- SHA1 e05ed317f44ae3630c66713a31fb866a85f01c9b
- SHA512 6dd1f1c01eafd5c4e7f4fc954853856220f7394e07066e4bfa10d3bb397df56e77b514545b9fe9d59357bc93c7c127995959d68c58eddf82dea57adbbd298fc5
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXZwkX5sM:bgGYcA/53GAGgIvFb1sM
- TLSH T1203322387FE52972E37BDFB586F651C6B93578223D16980D40CA43844833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH