Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
09/08/2026, 09:11
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-09_59d02b06d15f3e2dbb2d6a5dcedf263a_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_59d02b06d15f3e2dbb2d6a5dcedf263a_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-09_59d02b06d15f3e2dbb2d6a5dcedf263a_cryptolocker_elex.exe
- Size 36KB
- Sample260809-k55d1svbmd
- SHA256 d31c914124ccbfd5269d0a23d9df4b5c83384862cb7a29bcdc31d83f80a54a60
- MD5 59d02b06d15f3e2dbb2d6a5dcedf263a
- SHA1 8131ad399eafb3bd41420261bed92654166b572d
- SHA512 fa6f3d5e5124cea3a0eb39ea133acdc0f6c28629307c5acce8c82dbb8af9d8ebd777c68df98ab03972216278bf86165b9e48f6128136d5a366ba104c7bb8b549
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuaBflNGesjA:bG74zYcgT/Ekd0ryfjWlNGvA
- TLSH T11903D435FBEA3822DA3BAEF491F640F1BB3F7819791078CE049BE74C4872611995D50A
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/1544-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1544-3-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d000000019cb1-14.dat CryptoLocker_rule2 behavioral2/memory/5584-19-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5584-21-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5584 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 2026-08-09_59d02b06d15f3e2dbb2d6a5dcedf263a_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 1544 wrote to memory of 5584 1544 2026-08-09_59d02b06d15f3e2dbb2d6a5dcedf263a_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_59d02b06d15f3e2dbb2d6a5dcedf263a_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_59d02b06d15f3e2dbb2d6a5dcedf263a_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1544 -
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:5584
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 37KB
- SHA256 7e5a5b69cc5c59c7c8fce730765999da57e83c73f1a53b1255f6be7de55046f2
- MD5 e85d27202faedfab36c36258307a1cc7
- SHA1 ebc58bb8c0b67cc758fd223bcd96047b6190c74f
- SHA512 5367cff4c7fc630e70286b4b50fb17ccba6ed29b9384b01c78aa4f9359216b40951a0464d1ad006921e6c5f951712b31ed65ed2dac3c4381815054fb63b0a216
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuaBflNGesjCC:bG74zYcgT/Ekd0ryfjWlNGvCC
- TLSH T17803C435FBEA3822DA3BAEF491F640F1BB3F7819791078CE049BE34D4872A11995D509
- MD5 SHA1 SHA512 SSDEEP TLSH