Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
08/07/2026, 02:44
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-07-08_423b58eab5f1b014c45bc3c3082d0dfa_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-08_423b58eab5f1b014c45bc3c3082d0dfa_cryptolocker_elex.exe
Resource
win11ltsc2024-20260706-en
18 signatures
150 seconds
General
- Target 2026-07-08_423b58eab5f1b014c45bc3c3082d0dfa_cryptolocker_elex.exe
- Size 4.6MB
- Sample260708-c8mpdaax2k
- SHA256 af11c98a61cf0662a4eadb56af6129fa6f9870fa8f0c48236423a7814128c1ae
- MD5 423b58eab5f1b014c45bc3c3082d0dfa
- SHA1 dadd6af2850ec52568bfdd9f48e14c9ed4fd3785
- SHA512 f6fe2ea5b5e74a9bf5ea81cd2bcaff6431597a9d4c501b886e5a4e8c1c8fd16145b40fcdc88540c89c5cf8a42a0898bb428b99d1ce55fca6b59909e55a35e4ef
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTD:w/ZFIjBzF/ZFIjBzPEUusD
- TLSH T13B263C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4896-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000024695-13.dat CryptoLocker_rule2 behavioral1/memory/5648-17-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral1/memory/5648-25-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral1/files/0x0009000000024695-13.dat INDICATOR_EXE_Packed_MPress - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3053180483-1881419501-3594244048-1000\Control Panel\International\Geo\Nation 2026-07-08_423b58eab5f1b014c45bc3c3082d0dfa_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 5648 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 2026-07-08_423b58eab5f1b014c45bc3c3082d0dfa_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4896 wrote to memory of 5648 4896 2026-07-08_423b58eab5f1b014c45bc3c3082d0dfa_cryptolocker_elex.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-08_423b58eab5f1b014c45bc3c3082d0dfa_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-08_423b58eab5f1b014c45bc3c3082d0dfa_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4896 -
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:5648
-
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 8aa2d41c97f673372dacd56442beea5ebbb554865dbad4e0095904096afd9062
- MD5 6907a2fcc1583e4f179883244d3cdd73
- SHA1 30e08f3598a44b1a841d033d26722e850679f810
- SHA512 d948f5bbe4c17cd564156145d6dd6cc06b9a510697f331e90b9289d356126c640adac2275ea7dfc7fd20e89a07ea5f6fd08a2f9b7846b13c8a1acd36fe3d6c11
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTu:w/ZFIjBzF/ZFIjBzPEUusu
- TLSH T1D2363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH