Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
22/08/2026, 10:35
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-21_903d7e5923148022b7bb40c4f233af70_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-21_903d7e5923148022b7bb40c4f233af70_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-21_903d7e5923148022b7bb40c4f233af70_cryptolocker_elex.exe
- Size 31KB
- Sample260822-mmwp9stbne
- SHA256 7db21ae825e80086a88eea872277556f1e3c531cc05e9e30b38b651d3616c681
- MD5 903d7e5923148022b7bb40c4f233af70
- SHA1 bd5efc07fa12a8efbb47503eee139b23667ac77a
- SHA512 54051c39842e760d7944ae28fb0f3963aa0c876e1ab18d0444be0d6aaf4aa142868b34fc671841ec92d619e380a52309404b4e6c6ea4fec989207fcdeb63fdef
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/Xf4LU+HATIj:bIDOw9UiaCHfjnE0Sf8XHATK
- TLSH T1B4E2B639BEE56872E277ABB554F392C2E87479123E24494E98CB73890932F53FC5210D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/4676-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000001b1d0-13.dat CryptoLocker_rule2 behavioral2/memory/4064-25-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4064 lossy.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 2026-08-21_903d7e5923148022b7bb40c4f233af70_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language lossy.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4676 wrote to memory of 4064 4676 2026-08-21_903d7e5923148022b7bb40c4f233af70_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-21_903d7e5923148022b7bb40c4f233af70_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-21_903d7e5923148022b7bb40c4f233af70_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4676 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4064
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 31KB
- SHA256 660a00b9939a322f01b7916c0f44f188da1177e3959cc071c87448b77aca4296
- MD5 3f3d4f78136b75980e14c8a3de4ad265
- SHA1 50b41b58474e087448e38f618c25d1ce2f60bdb7
- SHA512 388269ba57038eed69ca489044b1948ba71fb369c1b26fc34d771f47a7330f0b5813fd303387b08131c13dc08f0c16ac197fd596540d5a8d5395379d45814dc5
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/Xf4LU+HATIc:bIDOw9UiaCHfjnE0Sf8XHATZ
- TLSH T1D1E2C639BEE52872E277ABB554F392C2E87479123E24494E98CB73890932F53FC5210D
- MD5 SHA1 SHA512 SSDEEP TLSH