Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
24/10/2026, 12:30
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-10-22_588e2cef0556426b036213ad5f4fe8a9_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-10-22_588e2cef0556426b036213ad5f4fe8a9_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
6 signatures
150 seconds
General
- Target 2026-10-22_588e2cef0556426b036213ad5f4fe8a9_cryptolocker_elex.exe
- Size 50KB
- Sample261024-ppjvlat1cy
- SHA256 ea42dcbf72e9fd7c5cf7a8a336d7f6f83fc959e9751414c96ca21097dba68e35
- MD5 588e2cef0556426b036213ad5f4fe8a9
- SHA1 45684c38faf18cb7fb6c6b985c1db52a4f876ee1
- SHA512 60fc1688d3de46f66e9f30d65fb7d30fddee9871381f0e01d86fc6a0bb2761c5ee48fa49b3165c2edfa7adc9208cfd778ec3341c522f48e3bccdd523a216d239
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/W:bgGYcA/53GAGgIvF9v2Zp
- TLSH T1C23322387BE56972E37BCFB586F691C2B975B8223C16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/6056-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000001b2f4-12.dat CryptoLocker_rule2 behavioral2/memory/4324-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4324-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4324 hasfj.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname hasfj.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain hasfj.exe - 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 2026-10-22_588e2cef0556426b036213ad5f4fe8a9_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 6056 wrote to memory of 4324 6056 2026-10-22_588e2cef0556426b036213ad5f4fe8a9_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-10-22_588e2cef0556426b036213ad5f4fe8a9_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-10-22_588e2cef0556426b036213ad5f4fe8a9_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:6056 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
PID:4324
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 50KB
- SHA256 25e88b0998ca14fb27c3b6ccdab10b61dab749887f39ce3e3b2192e72c1ea7e6
- MD5 081cffd81326e1028e148bd372691577
- SHA1 4d95e9f70162cfa25b4d8788e7409560fd57ca0f
- SHA512 92ca933ef8b917305f2ac69d1c826fb2cf4dfd1f960e54eccb535ffd1cf9aca597faa4cf453e8225c80ed08affb302fb9c0e78a1a78dfe0fcacf5314334b1573
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/j:bgGYcA/53GAGgIvF9v2ZY
- TLSH T1743322387BE56972E37BCFB586F691C2B975B8223C16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH