Analysis
- max time kernel
150s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
17/05/2026, 15:20
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-17_13653c7348d8d94b8f16c1a723ba2a52_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-17_13653c7348d8d94b8f16c1a723ba2a52_cryptolocker_elex.exe
Resource
win11-20260513-en
5 signatures
150 seconds
General
- Target 2026-05-17_13653c7348d8d94b8f16c1a723ba2a52_cryptolocker_elex.exe
- Size 44KB
- Sample260517-sqrtdaas51
- SHA256 9d600330f08223ef99cdc604a07b166877121cd3ca0df0e5f375665f0c3785b0
- MD5 13653c7348d8d94b8f16c1a723ba2a52
- SHA1 29261f2100766d6bb24c249ab5b7ffab5d517742
- SHA512 d53751ed00deb7e6174f5e0cff0a11ff6c7aeca0a0e8258a66d63bca84d12bd170eed31d81e325853188467d11377c54ea49100bd5a66a2ce71e80f9b4482b1b
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTD:bgGYcA/53GAGgIvFG
- TLSH T17B1355387FE62972D37BDFB586F691C6B93578223D16980D40CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2636-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0012000000025c63-13.dat CryptoLocker_rule2 behavioral2/memory/3404-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3404-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3404 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 2026-05-17_13653c7348d8d94b8f16c1a723ba2a52_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 2636 wrote to memory of 3404 2636 2026-05-17_13653c7348d8d94b8f16c1a723ba2a52_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-17_13653c7348d8d94b8f16c1a723ba2a52_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-17_13653c7348d8d94b8f16c1a723ba2a52_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2636 -
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:3404
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 44KB
- SHA256 f1a917c18fa4727456d4fd1f5ddbadbaf853bfd840984c1961e1f12f69ad6a95
- MD5 a4723ec46d547beb68bedb9d547c682a
- SHA1 5192236cb6e3f5d70cee693758e7b5f9042f48e9
- SHA512 b300dac19b312ee73297ea1db08c76e2b7dead66641527a0eda264a25e97c6077908371c720076e69245f5990ee4041be2db2b0905c96e985d1c9650239102c0
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTV:bgGYcA/53GAGgIvFk
- TLSH T1EE2354387FE62972D37BDFB586F691C6B93578223D16980D40CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH