Analysis
- max time kernel
150s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
29/05/2026, 22:25
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-29_1af67c33d7fe8d19b027823359cac265_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-29_1af67c33d7fe8d19b027823359cac265_cryptolocker_elex.exe
Resource
win11-20260513-en
5 signatures
150 seconds
General
- Target 2026-05-29_1af67c33d7fe8d19b027823359cac265_cryptolocker_elex.exe
- Size 44KB
- Sample260529-2b2jpsa181
- SHA256 1f2e6137cf77ce62cb8f80f26c7e469284ccb554b8818f5f0e7abca442a48d51
- MD5 1af67c33d7fe8d19b027823359cac265
- SHA1 32a79d3bb66705beba84ef0c596dd0650c74b649
- SHA512 1c6e10cc0ae9afe62452c21b5f3d042f958a0c79b8e2e9db53ad3a2138a9fac6d0dd6dc5556e2b02ed27337768bea96e4f84ed49c6a66abb9559003a7d4def88
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEh4:bgGYcA/53GAGgIvF7EK
- TLSH T1F72331387BE62932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66EC91A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4800-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0012000000025c63-13.dat CryptoLocker_rule2 behavioral2/memory/3232-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3232-19-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3232 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 2026-05-29_1af67c33d7fe8d19b027823359cac265_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 4800 wrote to memory of 3232 4800 2026-05-29_1af67c33d7fe8d19b027823359cac265_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-29_1af67c33d7fe8d19b027823359cac265_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-29_1af67c33d7fe8d19b027823359cac265_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4800 -
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:3232
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 45KB
- SHA256 5c4648c6be5c457d69eb2fbb952773ff344c7a0207acf9e364d06b7628e2c2c9
- MD5 1a66a6382be904b55e1656bd70ca33f8
- SHA1 433c8cf99ec64932de5a0616f595301969a9c62c
- SHA512 2b121a01f2cc615f708dfba4ddd038d9aa80e9f16bf8a0027a2b1604ce7d8b5cdc37995344caa86685fa39e5bbf1c27fa2a34e2db04e5328c1303dda4b589cb6
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhV:bgGYcA/53GAGgIvF7ET
- TLSH T16F2331387BE62932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66EC91A1E
- MD5 SHA1 SHA512 SSDEEP TLSH