Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
24/04/2026, 09:47
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-04-24_2b0920e19a193a871eb8821b84c3474f_cryptolocker_elex.exe
Resource
win10v2004-20260130-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-04-24_2b0920e19a193a871eb8821b84c3474f_cryptolocker_elex.exe
Resource
win11-20260130-en
5 signatures
150 seconds
General
- Target 2026-04-24_2b0920e19a193a871eb8821b84c3474f_cryptolocker_elex.exe
- Size 39KB
- Sample260424-lsf2bset4x
- SHA256 60550df7de5380c83c78a13e3a5930ae894d4ac3db51daee792d5064a812cbb8
- MD5 2b0920e19a193a871eb8821b84c3474f
- SHA1 4e9b6fa9c582df00d1fdc2ce453ae24b76829950
- SHA512 1ba3073edd650457b50c914075452316b696b1350a39a16a35fc353e0f7ba2bb4cbe500ffd389e9f809092ba43ab512ea82ddf24b83717891eba810c7476c568
- SSDEEP 384:bgM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzorw7SigsXmyuvLVHN4X/xtBz:blo/2n1TCraU6GD1a4XcsSKNuxNwua
- TLSH T10C035038BEE95972D377C67584F2A1C2B93A7C123906580E55CBB3880D33B5BBC90A1D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/files/0x002200000002b189-13.dat CryptoLocker_rule2 behavioral2/memory/4848-19-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4848-21-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4848 rewok.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 2026-04-24_2b0920e19a193a871eb8821b84c3474f_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rewok.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 1120 wrote to memory of 4848 1120 2026-04-24_2b0920e19a193a871eb8821b84c3474f_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-04-24_2b0920e19a193a871eb8821b84c3474f_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-24_2b0920e19a193a871eb8821b84c3474f_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1120 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4848
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
- Size 40KB
- SHA256 888dc9387faf4784f42b78c598a76c22888e069955ba5833455f5d58a9028cf9
- MD5 6c3cf9f85748b0eb0e95566f3f863251
- SHA1 e805d8fdf1f90ef45e8d86f41675aed622c8cd81
- SHA512 f233c34e4d3ee1fc1a771eadcc024f322aa31587689b71ba5a5b850dba16b4efdb6515eb8600aa508535e83243288f10f3d110b9c6894619209ee433743d3960
- SSDEEP 384:bgM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzorw7SigsXmyuvLVHN4X/xtBZ:blo/2n1TCraU6GD1a4XcsSKNuxNwuM
- TLSH T10E035038BEE95972D377C67594F2A1C2B93A7C123906580E55CBB3880D33B5BBC90A1D
- MD5 SHA1 SHA512 SSDEEP TLSH