Analysis
- max time kernel
27s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
11/10/2026, 07:50
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-10-10_97eb515791ea8d952c2df027d21a51bf_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-10-10_97eb515791ea8d952c2df027d21a51bf_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
6 signatures
150 seconds
General
- Target 2026-10-10_97eb515791ea8d952c2df027d21a51bf_cryptolocker_elex.exe
- Size 51KB
- Sample261011-jpmzcsed49
- SHA256 d93f0096bbbb7a7409c7c4d940207b42955a72bc656792f7a829788972c24a7a
- MD5 97eb515791ea8d952c2df027d21a51bf
- SHA1 02760f5d212df72049f8a20e2b8e2a744815a1bc
- SHA512 a3f7c5e843df9f1a9349b6e8d4d04cb840b1b65e118987dd5b204b1870bf24898ede37e86b515054a5a84dbf8ad13a0b5c237dcdd6a74b84793b45b15bc464e3
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/1:bgGYcA/53GAGgIvF9v2Zq
- TLSH T13C3312387BE56972E37BCFB586F691C2B975B8223C16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4788-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000600000001b86a-12.dat CryptoLocker_rule2 behavioral2/memory/3120-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3120-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3120 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 2026-10-10_97eb515791ea8d952c2df027d21a51bf_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 4788 wrote to memory of 3120 4788 2026-10-10_97eb515791ea8d952c2df027d21a51bf_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-10-10_97eb515791ea8d952c2df027d21a51bf_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-10-10_97eb515791ea8d952c2df027d21a51bf_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4788 -
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:3120
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 52KB
- SHA256 9818383a55862f99c9228561e48a6a100868c7ac37669bd80cad8ceb299309d5
- MD5 0ac639143c922ae60eceb6a1acf06bdc
- SHA1 c677d20683c3aec189d5e84bd5b0b0ab7de6b92c
- SHA512 838dfbd660d8611152e5a37a4908450e4c288ba88325777a5e89fcaf9c163f0fe072ad685ae4ffa86b3a3856839f29713d59e2e65f847e9396e824a9d4ebd764
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/S:bgGYcA/53GAGgIvF9v2ZF
- TLSH T1223311387FE56972E37BCFB586F691C2B975B8223C16980D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH