Analysis
- max time kernel
149s - 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
31/05/2026, 06:38
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-31_9266edfbbb4779160e3091f0fe249ac8_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-31_9266edfbbb4779160e3091f0fe249ac8_cryptolocker_elex.exe
Resource
win11-20260513-en
5 signatures
150 seconds
General
- Target 2026-05-31_9266edfbbb4779160e3091f0fe249ac8_cryptolocker_elex.exe
- Size 40KB
- Sample260531-hefa4aa17s
- SHA256 39e22a7165eb38092fb9c598fcd826bac01961fc373328b19609cb931a683240
- MD5 9266edfbbb4779160e3091f0fe249ac8
- SHA1 5a375c70d29c193024e48a2d7c84b9808318e01f
- SHA512 ab141b84aad38faaa2df0b9203c8e04c1877978a5d05cc6cad061d2fbdd4c3c61ba4a9f06d9dbd285d8cf21f43bec16b72773232d80513174d89854df331ff21
- SSDEEP 384:btBYQg/WIEhUCSNyepEjYnDOAlzVoGp6C0/zzodV7tkq4l8tFFxE2BodcAOjb82Z:btB9g/WItCSsA5dAXwr3BGub4PnPXH6
- TLSH T14D1373347FE55A72D377C6B645F3E1C2A976BC227916DA1D91CEA3480833B02EC90A1D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/4444-2-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0008000000000438-13.dat CryptoLocker_rule2 behavioral2/memory/3288-18-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3288 gewos.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 2026-05-31_9266edfbbb4779160e3091f0fe249ac8_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language gewos.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4444 wrote to memory of 3288 4444 2026-05-31_9266edfbbb4779160e3091f0fe249ac8_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-31_9266edfbbb4779160e3091f0fe249ac8_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-31_9266edfbbb4779160e3091f0fe249ac8_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4444 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3288
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\gewos.exe
- Size 40KB
- SHA256 4cf0b9de13ea98caa0a793a969cde2b3012629b26778e8b5a5454160a88bc175
- MD5 719375db2325a589f7cebe8ad1a9f993
- SHA1 0b44710755716d5dca334e50d224fca28d48ec6c
- SHA512 82c52d65c38cde8788a8d35b8f3f47af9bcdc58c0f0f774c18fe3407455cc69c14316a9a06d9dcfa3ee3fab1899a4a1eb28136d800492bdbb4bfde33cfaa1262
- SSDEEP 384:btBYQg/WIEhUCSNyepEjYnDOAlzVoGp6C0/zzodV7tkq4l8tFFxE2BodcAOjb82y:btB9g/WItCSsA5dAXwr3BGub4PnPXH5
- TLSH T1681373347FE55A72D377C6B645F3E1C2A976BC227916DA1D91CEA3480833B02EC90A1D
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\gewosik.exe
- Size 184B
- SHA256 85b2e79b62325a98ad2c2b994c062ae22451f7a42b32e4106e5c873b10cf53a1
- MD5 497625149b290f7eb8f7b9098576f0ae
- SHA1 8b410b5c9e70e5fe05170f1edf14d9549e8e3f6c
- SHA512 dd24643006fc0eea9790daab1075ddfe427d7ce75b097f03975e09fbb27905a0cbf3da249510dc4c8870b36803ae955bb10a2d25de1bc74fc0b6ca7feeecc9b1
- TLSH T118C0C0F29930885B04123627CCA2722252137D04FE801C30D1C531C8C6F0F324D02504
- MD5 SHA1 SHA512 TLSH