Analysis
- max time kernel
150s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
08/07/2026, 22:43
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-08_04fc81f5915a291bb1e26d3ee91a8d43_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-08_04fc81f5915a291bb1e26d3ee91a8d43_cryptolocker_elex.exe
Resource
win11ltsc2024-20260706-en
17 signatures
150 seconds
General
- Target 2026-07-08_04fc81f5915a291bb1e26d3ee91a8d43_cryptolocker_elex.exe
- Size 46KB
- Sample260708-2m76maa191
- SHA256 24f08bf0ae872b2a0270894ec54a5fcf1d13fbe04f054c0cd632d9d7c7e26668
- MD5 04fc81f5915a291bb1e26d3ee91a8d43
- SHA1 e06a94c1ba2de3bc12f5f9ba47ba579791c4e5c5
- SHA512 8a19635d3b62cb5d915bad65e595864d997744ad7ec7ef1cc660f5c9d2e03f03c7533fcc43b135a2250bbfef5a7c5ebd0571db0a3d82651d3be164735d5a86c6
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhuH:bgGYcA/53GAGgIvF7EkH
- TLSH T19B2321387BE52932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1828-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a00000002438d-13.dat CryptoLocker_rule2 behavioral1/memory/556-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/556-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1788976790-1541110888-1636651838-1000\Control Panel\International\Geo\Nation 2026-07-08_04fc81f5915a291bb1e26d3ee91a8d43_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 556 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 hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-07-08_04fc81f5915a291bb1e26d3ee91a8d43_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 1828 wrote to memory of 556 1828 2026-07-08_04fc81f5915a291bb1e26d3ee91a8d43_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-08_04fc81f5915a291bb1e26d3ee91a8d43_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-08_04fc81f5915a291bb1e26d3ee91a8d43_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1828 -
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:556
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 47KB
- SHA256 57d82f8555b651f8abff184f427fcbf1dd515e24589d5cfb02db2a373b90c213
- MD5 0308237e131afd706e7e4752b0150022
- SHA1 56aba254f78b30cb449beb3f773dc980c7322f50
- SHA512 e80f4653152fd1a417b7ff2945c69d37e1b6487ddf88a9fc898df94f3812cc793d711c6862b2ef1f45d393f87e22d834d0981601814e7ad85b98d5b226515585
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhu2R:bgGYcA/53GAGgIvF7Ekm
- TLSH T1EC2321387FE52932D37BDFB586F691C6B975B8223D16980D40CA43444833F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH