Analysis
- max time kernel
150s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
02/08/2026, 04:07
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-01_7ed0fd8498273fe05c841ac676788054_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-01_7ed0fd8498273fe05c841ac676788054_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-01_7ed0fd8498273fe05c841ac676788054_cryptolocker_elex.exe
- Size 49KB
- Sample260802-epntfathpa
- SHA256 ca37d8cd0a0418ba51f0a97ad9132b8b86b7fcb7a8c81d8e77f607a4a67c49ca
- MD5 7ed0fd8498273fe05c841ac676788054
- SHA1 28e1bb8d9012de978d90a1c97adaf337409043d5
- SHA512 a2b332a7ade48af0f931083a9bf2d2c54efef7088685c59d21caecf050cd4d1b5e444eec67ceae55459dc22c291d4cec31a807edb8c1a390a4bfb53174b417f7
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/vM:bgGYcA/53GAGgIvF9v2Zn
- TLSH T1F63343387FE56972E37BCFB586F691C6B935B8223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4572-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00100000000231f3-13.dat CryptoLocker_rule2 behavioral1/memory/4432-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/4432-19-0x0000000008000000-0x000000000800A000-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-1-5-21-3053180483-1881419501-3594244048-1000\Control Panel\International\Geo\Nation 2026-08-01_7ed0fd8498273fe05c841ac676788054_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 4432 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 2026-08-01_7ed0fd8498273fe05c841ac676788054_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 4572 wrote to memory of 4432 4572 2026-08-01_7ed0fd8498273fe05c841ac676788054_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-01_7ed0fd8498273fe05c841ac676788054_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-01_7ed0fd8498273fe05c841ac676788054_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4572 -
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:4432
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 49KB
- SHA256 abd08b4648502ad15511281b22187169a68eba3760ac1f587a0fca19e2b783ee
- MD5 3c896e113b7ffb762de3e3a9b62755ff
- SHA1 271973e04ee012d2f7898d31eec8b70b069a2172
- SHA512 9cf50a26d0bdd8f73ab0122108e8efcd05e32d5d8fcb8b65b29cd0d98654acfa208df8b8fecf71602bc1691e0e2b8fff67c3e78fa853114f24dc0f2c27437ddf
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/vL:bgGYcA/53GAGgIvF9v2ZY
- TLSH T1143333387FE56972E37BCFB586F691C6B935B8223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH