Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
04/08/2026, 11:42
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-08-03_5fd39903a96e188148fd7b4d14aeacf3_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-03_5fd39903a96e188148fd7b4d14aeacf3_cryptolocker_elex.exe
Resource
win11ltsc2024-20260710-en
6 signatures
150 seconds
General
- Target 2026-08-03_5fd39903a96e188148fd7b4d14aeacf3_cryptolocker_elex.exe
- Size 4.6MB
- Sample260804-nvb69sae26
- SHA256 1f9c0a7cb13dbcaea3b0264733f286bad78fb1620d29ecfa2cc14460f36e3984
- MD5 5fd39903a96e188148fd7b4d14aeacf3
- SHA1 7f8580aed1ec6b5011a0ba51135ab4273ecab70f
- SHA512 f74ce94131d99ddf21d224317c3cdb782e54114040c5104e96ab2c127b39c18af8823381d42999383122893463f19d23be1318e84a732e0a2ce4aab83ebc7bcb
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTY:w/ZFIjBzF/ZFIjBzPEUusY
- TLSH T184363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2632-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x002200000001c58c-13.dat CryptoLocker_rule2 behavioral2/memory/4868-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4868-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x002200000001c58c-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 4868 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 2026-08-03_5fd39903a96e188148fd7b4d14aeacf3_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 2632 wrote to memory of 4868 2632 2026-08-03_5fd39903a96e188148fd7b4d14aeacf3_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-03_5fd39903a96e188148fd7b4d14aeacf3_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-03_5fd39903a96e188148fd7b4d14aeacf3_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2632 -
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:4868
-
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 2f7b6a02eaddfee607689e334215df46487e0eeff06f19dceb44d5446a7c23b0
- MD5 46e02263b552ba31c13d24dad8b1fc78
- SHA1 e859390f577027981eb891cd71ff04bea4765cfa
- SHA512 fe122be9b5f60913e67ddc8db53c70fd1752e96750ba7469334fbf4a49a89f680374221ec3bd40c189a3d6ee314c7ee0b09be12e34fd1690890cf543e9e9fd21
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTm:w/ZFIjBzF/ZFIjBzPEUusm
- TLSH T1CE363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH