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
31/08/2026, 15:09
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-31_bf70a361763b3ef4dbdabfc13dfe026d_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-31_bf70a361763b3ef4dbdabfc13dfe026d_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-31_bf70a361763b3ef4dbdabfc13dfe026d_cryptolocker_elex.exe
- Size 47KB
- Sample260831-sjsgbsvbje
- SHA256 7e22d3961d74910cd23ca05dbd66ec40ca4330ad01d4a3474a08d4abb557384f
- MD5 bf70a361763b3ef4dbdabfc13dfe026d
- SHA1 bf83f3a30570518eac29d5e11d428ec9bb4958be
- SHA512 dc0ae48eb9a24fe13b207dc9c108f82fc604a63c31c01616b903c977924b60074f1561e5debc165e8c07fe9bdb5dbd62bbbc2040205150ce28bba14ac9edd5ae
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhzz:bgGYcA/53GAGgIvF7ER
- TLSH T17A2321387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444833F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3564-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b000000011390-13.dat CryptoLocker_rule2 behavioral2/memory/3076-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3076-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3076 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 2026-08-31_bf70a361763b3ef4dbdabfc13dfe026d_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 3564 wrote to memory of 3076 3564 2026-08-31_bf70a361763b3ef4dbdabfc13dfe026d_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-31_bf70a361763b3ef4dbdabfc13dfe026d_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-31_bf70a361763b3ef4dbdabfc13dfe026d_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3564 -
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:3076
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 47KB
- SHA256 bb832d539cf786ae6b9bd1b34183b41d98acbbae61123d7d2c1d08f2c3dc6e05
- MD5 c1d0adbcbf3e0d7b07559f4168aa4427
- SHA1 7f187ae6c51963e0100b2fb687975105bfcf7614
- SHA512 cc5cdf1dca8a41488d51b45f38d3bca7a0cadb1474ee28cb155b2a624420f55f8631173b294344a570841e57dfdcaecae4520a02bf44a8b9047ec7a228497c1c
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhz4:bgGYcA/53GAGgIvF7EW
- TLSH T19A2321387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444C23F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH