Analysis
- max time kernel
150s - max time network
153s - 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, 01:24
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-07-27_5850a10d6af3efb2e7dbc44c8b25a1ec_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-27_5850a10d6af3efb2e7dbc44c8b25a1ec_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-07-27_5850a10d6af3efb2e7dbc44c8b25a1ec_cryptolocker_elex.exe
- Size 4.6MB
- Sample260727-bshj2stfph
- SHA256 258bf852799eeafcc38d21e2c427647eb6a5e49f84c5bf2a9766221d3c44e7d5
- MD5 5850a10d6af3efb2e7dbc44c8b25a1ec
- SHA1 b5c774facbe6cbb519656a7b283862d6c82e38af
- SHA512 b9598eb0c9afe8f0727ded8cb94a7643da9ad9d2471e3fd74177c1809a755b2a133d27aaac8ceec6aaabf3c8aa691a65a2182d957c6636535e2083c1d0b54eef
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymT1:w/ZFIjBzF/ZFIjBzPEUus1
- TLSH T1B2263C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4076-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d00000001c548-13.dat CryptoLocker_rule2 behavioral2/memory/1784-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1784-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000d00000001c548-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 1784 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_5850a10d6af3efb2e7dbc44c8b25a1ec_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 4076 wrote to memory of 1784 4076 2026-07-27_5850a10d6af3efb2e7dbc44c8b25a1ec_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-27_5850a10d6af3efb2e7dbc44c8b25a1ec_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-27_5850a10d6af3efb2e7dbc44c8b25a1ec_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4076 -
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:1784
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 4.6MB
- SHA256 9c34a2091af81465a66507b1d80ba42d6d90c3402347260ecc4188b1e7c2a4b6
- MD5 5af2dc0d3c8fd07d97b71bd535e15f89
- SHA1 3af3f564bb88a8979305bc109fcec04cbdb4a42d
- SHA512 143ac59cb8466f68adb08d535bfad31291def4dcdcf23baea36332aa4809d663fe6040d96b5cd306e28574fbac5fcf3ae79186a61c024778a22e619f968beb91
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTN:w/ZFIjBzF/ZFIjBzPEUusN
- TLSH T1C5363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH