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, 19:57
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-10_a42f2a0647bacebc8338018380cc73fc_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-10_a42f2a0647bacebc8338018380cc73fc_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-10_a42f2a0647bacebc8338018380cc73fc_cryptolocker_elex.exe
- Size 40KB
- Sample260810-ypncfsxblc
- SHA256 d8e4658423e5d7521c3dd8111ab77ea78df2f907652bd02b8c96fefae86485bb
- MD5 a42f2a0647bacebc8338018380cc73fc
- SHA1 ab0f36c6c76eef12098476ac376452e7d4598b37
- SHA512 ecc77618225bedf66e4bc19d5e8d18423b3854404ed0a7d16eb68b97af5421d4f67e7c17bfe39a92dc53a8bf0af7e65a17912170b2e56803a826dbe9c43a336c
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCwu:bgGYcA/53GAGgIvFe
- TLSH T17C1386387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F65EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4824-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0008000000019cc1-13.dat CryptoLocker_rule2 behavioral2/memory/796-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/796-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 796 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 2026-08-10_a42f2a0647bacebc8338018380cc73fc_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 4824 wrote to memory of 796 4824 2026-08-10_a42f2a0647bacebc8338018380cc73fc_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-10_a42f2a0647bacebc8338018380cc73fc_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-10_a42f2a0647bacebc8338018380cc73fc_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4824 -
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:796
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 41KB
- SHA256 886dac01afdc34fae8f25762ad01a569646200412e939d91883f5c163c6f3b3a
- MD5 c8e406ec09bc37a2cf2836d1d4c8080a
- SHA1 3c6bc7f36db5c2520ecfebc43d2d7bdebfc15904
- SHA512 2c949d9378f487a7bd3fd7c77cf08bdf7e9d7945087a8eeee4bd5ca4c53970b367ccb3905b65478b750d099dc9ccaf2edd2e23f5e9e8f7afc01723b0360dce5b
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCwJ:bgGYcA/53GAGgIvFZ
- TLSH T1371386387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F65EC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH