Analysis
- max time kernel
150s - max time network
147s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
03/06/2026, 03:45
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-06-03_925a193b124bae3dad0166e2dbeaf8d7_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-06-03_925a193b124bae3dad0166e2dbeaf8d7_cryptolocker_elex.exe
Resource
win11-20260513-en
5 signatures
150 seconds
General
- Target 2026-06-03_925a193b124bae3dad0166e2dbeaf8d7_cryptolocker_elex.exe
- Size 40KB
- Sample260603-ea158aax6j
- SHA256 424072f1da681d5d17e6928f4be9aefb77868f940f11e35cbf9ba69c286bd0bd
- MD5 925a193b124bae3dad0166e2dbeaf8d7
- SHA1 4db68c3829344efc6a9bb0786d215915c4a73ab7
- SHA512 39b77a6015c7a29526ede6cec27ccbc2496bb578a117fa3e6b8eadda6802be5656dc4923e71734239a1265250702e66c4c9d70449318cde11abef7febb0aac53
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCCsD:bgGYcA/53GAGgIvFyD
- TLSH T12D0386387BD62972E37BDFB586F691C67935B8223D16880D54CA53844833F62EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2632-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0010000000025ad7-13.dat CryptoLocker_rule2 behavioral2/memory/3112-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3112-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3112 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 2026-06-03_925a193b124bae3dad0166e2dbeaf8d7_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 2632 wrote to memory of 3112 2632 2026-06-03_925a193b124bae3dad0166e2dbeaf8d7_cryptolocker_elex.exe 79
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-06-03_925a193b124bae3dad0166e2dbeaf8d7_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-06-03_925a193b124bae3dad0166e2dbeaf8d7_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2632 -
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:3112
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 40KB
- SHA256 f29d5ce45f8082878969fe7424b2709a67e2d2bd3879fc919419a6595f7defac
- MD5 11ffc5d1739a9d66260c6f15a6f2402c
- SHA1 49212d4acee32b9324ddb89740c03f02a611a318
- SHA512 b81aa6c5d6f5f35ef64b6d323e631957d2c95f9833fb784fa8f2e2aae20298e26acc71f217c8d43d2362d65c6787ce3ded400c8be557e46731a73311e25c0fc4
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCCsA:bgGYcA/53GAGgIvFyA
- TLSH T1191375387BD62972E37BDFB586F691C67935B8223D16880D54CA53844C33F62EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH