Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
09/08/2026, 04:08
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-09_6cf8fb7e71a230daa77694553dd10f22_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_6cf8fb7e71a230daa77694553dd10f22_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-09_6cf8fb7e71a230daa77694553dd10f22_cryptolocker_elex.exe
- Size 49KB
- Sample260809-eqacfazeme
- SHA256 7e27cdaf594874a40a77904ba1b496afd8e7dcaab37e8d339e7c22e1b4194ddf
- MD5 6cf8fb7e71a230daa77694553dd10f22
- SHA1 954f4b464dbe12607c3708c28dafe09aef243555
- SHA512 21d74aa7abe03ac142a5d4ea5a01de01d38a07449492e276866e9cd3e623b0afcb956d0bc719cac2f143e43d8cd97ddd67fda3b8e1781117b9bc484bd3c67535
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKJTA0:bgGYcA/53GAGgIvF9v2ZZ0
- TLSH T1393333387FE66932E37BCFB586F651C6B935B8223D16980D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2284-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x001a0000000243e7-13.dat CryptoLocker_rule2 behavioral1/memory/1084-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1084-19-0x0000000008000000-0x000000000800A000-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-1-5-21-2937465464-4167303362-2236413517-1000\Control Panel\International\Geo\Nation 2026-08-09_6cf8fb7e71a230daa77694553dd10f22_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 1084 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 2026-08-09_6cf8fb7e71a230daa77694553dd10f22_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2284 wrote to memory of 1084 2284 2026-08-09_6cf8fb7e71a230daa77694553dd10f22_cryptolocker_elex.exe 87
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_6cf8fb7e71a230daa77694553dd10f22_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_6cf8fb7e71a230daa77694553dd10f22_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2284 -
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:1084
-
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 583b4a624fbcc98116112d19f798d18b8331be2fbbf681f6b5423f76f2e0c6dc
- MD5 14858f2a7d94d20bf05f9f5a3c28ecbb
- SHA1 b4c707499eb143441c7f2a2e900fc518fcf67eb9
- SHA512 85552f41eddb9ca76c9032c5b9980ab03ffb10a71f3c1eb6d3e6be10f032e58478d988bdd0effbe6fafabf9ea64f9140d2f64f23bb5bca749727590c4b0d8994
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKJTAv:bgGYcA/53GAGgIvF9v2ZZv
- TLSH T1163333387FE66972E37BCFB586F651C6B935B8223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH