Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
09/08/2026, 04:04
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-09_b09c4af567bee48157f71386bfa5ea19_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_b09c4af567bee48157f71386bfa5ea19_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-09_b09c4af567bee48157f71386bfa5ea19_cryptolocker_elex.exe
- Size 48KB
- Sample260809-em282shj6w
- SHA256 59caa8be2b08d14ee9bdf8bc1727d52012aca97302678d486cc45a3e11c7e4ab
- MD5 b09c4af567bee48157f71386bfa5ea19
- SHA1 695902f94f131f634aaf1fe263b149a230bfa712
- SHA512 f46c6e3f161c649fb8fe3cbef7d2bf19d47b518f09c6325c8cee6e1b4b826a3a89d88dc3d3d69a26c60b8e1ebb835d797efe71cb534c7fb74354a7769536825a
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKJTAP:bgGYcA/53GAGgIvF9v2ZZP
- TLSH T14B2344387FE66972E37BCFB586F651C2B935B8223D16980D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4664-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0010000000019cbf-12.dat CryptoLocker_rule2 behavioral2/memory/4276-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4276-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4276 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 2026-08-09_b09c4af567bee48157f71386bfa5ea19_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4664 wrote to memory of 4276 4664 2026-08-09_b09c4af567bee48157f71386bfa5ea19_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_b09c4af567bee48157f71386bfa5ea19_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_b09c4af567bee48157f71386bfa5ea19_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4664 -
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:4276
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 48KB
- SHA256 370fca0c80578388fcabc35286949fe4c074622f36a2ca38660c5f38edc06696
- MD5 6cdb4c4497066074c9706acb35cebe8d
- SHA1 c82d815f361dac592e8d83d176239bd85a08e5a3
- SHA512 efb788bf3386eff7a4b2f48a89db4dd7f79c1c70f023715d68f92aabcc537f82b600de3cb3f21f12096aab56ea6a15d34bfe44c888dd6e5a35f89c4f12289ea1
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKJTAl:bgGYcA/53GAGgIvF9v2ZZl
- TLSH T1C52344387FE66972E37BCFB586F651C2B935B8223D16980D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH