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
31/07/2026, 11:41
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-31_758e35c000a0a580b895003992ecd7e2_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-31_758e35c000a0a580b895003992ecd7e2_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-31_758e35c000a0a580b895003992ecd7e2_cryptolocker_elex.exe
- Size 45KB
- Sample260731-ntewrsfk2x
- SHA256 a7230c682ffddd830ea0785a22667ecb7e38cd31cf4b84257acc100f3e283884
- MD5 758e35c000a0a580b895003992ecd7e2
- SHA1 12ad96358a6bcc8002dafecbcf937b827cdd8e22
- SHA512 3223935e94b11c6371dc3e56d6fc1e782ed9eaa244a6930ac82cea80f6302d74f51664ca4f2d53e0e388fa995c19c38c84a0c91763fca50c129777dff3cac5d8
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCT2:bgGYcA/53GAGgIvFr
- TLSH T1EC2355387FE62972E37BDF7586F691C6B975B8223D16980D40CA43444833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4128-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b000000011390-13.dat CryptoLocker_rule2 behavioral2/memory/3076-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3076-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3076 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 2026-07-31_758e35c000a0a580b895003992ecd7e2_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 4128 wrote to memory of 3076 4128 2026-07-31_758e35c000a0a580b895003992ecd7e2_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-31_758e35c000a0a580b895003992ecd7e2_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-31_758e35c000a0a580b895003992ecd7e2_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4128 -
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:3076
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 45KB
- SHA256 3759dc03a4a23e2e47e0c9eaf991d4086febbef3ee87cc3c419a97650dcde2b5
- MD5 16f012e4b60f9bccf22dfcf9ce3d0c7f
- SHA1 40b2463c600ff9fd6b77e8bfcf271d4cce96be2f
- SHA512 0ca6b03589ac3fad902f554b3ebe9a91e028e1c99a61954c8915b6e50785eef4bd6213ca738d2d7b114d54390f0c3c47af9933424dcb7f14b07e77fcf7b364d0
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTP:bgGYcA/53GAGgIvFy
- TLSH T1252355387FE62972E37BDF7586F691C6B975B8223D16980D40CA43444833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH