Analysis
- max time kernel
150s - max time network
149s - 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, 19:41
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-04_7690f094da9a5b0d9f723cd01674ac7b_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-04_7690f094da9a5b0d9f723cd01674ac7b_cryptolocker_elex.exe
Resource
win11ltsc2024-20260710-en
5 signatures
150 seconds
General
- Target 2026-08-04_7690f094da9a5b0d9f723cd01674ac7b_cryptolocker_elex.exe
- Size 41KB
- Sample260804-yeebsswycw
- SHA256 47433be0c55c399a45c23d89fed9a8305627527bbf113a5acde07dcd56769c3a
- MD5 7690f094da9a5b0d9f723cd01674ac7b
- SHA1 e9157cee456dcc114028ca6945b9b1ea3a427d21
- SHA512 a0361a3a3f793455705472c390db7319af9ff7ea8e11910ee676ebc2aa340ffe1bc1efa6aa913c8f91a8ddb9bb10e10d2f31a3fbb5c43ef9de8238c79edfb925
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCm:bgGYcA/53GAGgIvFX
- TLSH T1DA1374387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F66DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1408-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000019caa-13.dat CryptoLocker_rule2 behavioral2/memory/2676-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2676-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2676 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 2026-08-04_7690f094da9a5b0d9f723cd01674ac7b_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 1408 wrote to memory of 2676 1408 2026-08-04_7690f094da9a5b0d9f723cd01674ac7b_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-04_7690f094da9a5b0d9f723cd01674ac7b_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-04_7690f094da9a5b0d9f723cd01674ac7b_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1408 -
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:2676
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 41KB
- SHA256 c43b19e39deb3ed258b6afcb74b02db8826b3d5311a3cb9ff9256a8a7288fec6
- MD5 58c3d5bc87b1837c10df0b5de3b0f539
- SHA1 ceb1bbebe20d043d4487c92df56f4727f2abe44b
- SHA512 3fc955c0d35c03d26496c31972792fa25ed7048d6877b14f9d0a5783ed888295f4cdeb211d0d9e30451ac9df2a9d0dbe4598cca99d931aa418f924f353d1ec31
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCm/l:bgGYcA/53GAGgIvFp9
- TLSH T1A61374387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F66DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH