Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
08/08/2026, 08:55
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-08_4aaad2e4ab3a3f1bbf4c6902543fa11c_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-08_4aaad2e4ab3a3f1bbf4c6902543fa11c_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-08_4aaad2e4ab3a3f1bbf4c6902543fa11c_cryptolocker_elex.exe
- Size 47KB
- Sample260808-kvy49atcpg
- SHA256 913ffbecf10c33fff3607a55cc19e2dd2b36d115480421fa3c0f41bb60816c3b
- MD5 4aaad2e4ab3a3f1bbf4c6902543fa11c
- SHA1 6756e658b4c18f38cba3d88f2101a23c054e80bc
- SHA512 5034b4dd860b3016201b3d43f19ed3421c12f1d977ad6423770a27ea9f12fd7beaf5ea9a6081283e41abab736f377206d54f0b020eed786b7540d23a4175fc1b
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKYC4:bgGYcA/53GAGgIvF9v2ZZC4
- TLSH T1202355387FE66932E37BCFB586F691C6B93578223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2268-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00080000000243f4-13.dat CryptoLocker_rule2 behavioral1/memory/3280-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3280-25-0x0000000008000000-0x000000000800A000-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 2026-08-08_4aaad2e4ab3a3f1bbf4c6902543fa11c_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 3280 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 2026-08-08_4aaad2e4ab3a3f1bbf4c6902543fa11c_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 2268 wrote to memory of 3280 2268 2026-08-08_4aaad2e4ab3a3f1bbf4c6902543fa11c_cryptolocker_elex.exe 84
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-08_4aaad2e4ab3a3f1bbf4c6902543fa11c_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-08_4aaad2e4ab3a3f1bbf4c6902543fa11c_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2268 -
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:3280
-
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 6ba48acdd88e1c21a1e98c542ef9056f2bf8332f286eb179432c6ff9e6f67921
- MD5 96429f144f55e842eca651a990c7b62e
- SHA1 0f497b954a1d1bd9c248e833a5639986226c50fb
- SHA512 da289cf86cad740ec27bd53428872223e2435ad75ffc902c17a437a95fb4d19d0e1b4c31db4d242e7fc2d8d125d9bd47678cd386e9abcda1dd0ac8226920bd7f
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKYC3:bgGYcA/53GAGgIvF9v2ZZC3
- TLSH T1612355387FE66932E37BCFB586F691C6B97578223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH