Analysis
- max time kernel
150s - max time network
151s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
02/10/2026, 17:01
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-10-01_33279b63efe7b4002c70874ad553bed1_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-10-01_33279b63efe7b4002c70874ad553bed1_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
6 signatures
150 seconds
General
- Target 2026-10-01_33279b63efe7b4002c70874ad553bed1_cryptolocker_elex.exe
- Size 43KB
- Sample261002-vjshfazejf
- SHA256 1761bc1ef52d07cb6f7f257dd2476ccd5bd738b1ecb3625a4c71194a371b43d5
- MD5 33279b63efe7b4002c70874ad553bed1
- SHA1 c17dd5dbf90e22c2726739b55c36e9b452d14b06
- SHA512 988af0bd21020606abbe264e1ef0561bd8705d3d1b7d8b6294e6896dbb701bd011c175dfa12f7b2b1e8518428c8bfc2ea8529f0add4d52905646f8e10ba00c2c
- SSDEEP 768:bFo/2n1TCraU6GD1aIXcn62tH/1/LpP+leS:bC/y2Zm6iH/NLptS
- TLSH T10D13313CBFE45972D377C67595F3A1C2B93A78123D029C0E55CBA3880833B5AAD91A1D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 2 IoCs
resource yara_rule behavioral2/files/0x000b00000001b871-12.dat CryptoLocker_rule2 behavioral2/memory/3060-20-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3060 rewok.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname rewok.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain rewok.exe - 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 2026-10-01_33279b63efe7b4002c70874ad553bed1_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 4884 wrote to memory of 3060 4884 2026-10-01_33279b63efe7b4002c70874ad553bed1_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-10-01_33279b63efe7b4002c70874ad553bed1_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-10-01_33279b63efe7b4002c70874ad553bed1_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4884 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
PID:3060
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
- Size 44KB
- SHA256 4d6b08d7adc2ac5b717f00b6fe0a9e8de2ecd134f06b1161e8419f8ef1868f54
- MD5 56f481d40c8382278427066bd114eec3
- SHA1 3cb70b867ae8d4545e1b2ebb9121269ebb216514
- SHA512 ad1d8aa510c0031726853d91aafda610d55fb791bce4dc4549cf15ca483e836e42da2f8ecdcbe8dcd504b82a42da450d34c18bc38503c18000fee893f0a19a7d
- SSDEEP 768:bFo/2n1TCraU6GD1aIXcn62tH/1/LpP+leB:bC/y2Zm6iH/NLptB
- TLSH T1B013313CBFE41972D377C67595F2A1C2B93A78123D029C0E55CBA3880833F56AD91A1D
- MD5 SHA1 SHA512 SSDEEP TLSH