Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
01/08/2026, 05:08
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-01_6f3731071ab7cd895bd269687ba17891_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-01_6f3731071ab7cd895bd269687ba17891_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-01_6f3731071ab7cd895bd269687ba17891_cryptolocker_elex.exe
- Size 41KB
- Sample260801-fsq9eaeb67
- SHA256 0c9927245a9acf9ceed9a01b8861d0a049dd3c58cb6b47585e6509e75054aaed
- MD5 6f3731071ab7cd895bd269687ba17891
- SHA1 9388aaf5030e592033029081d3189bc38eb058bd
- SHA512 796565c6d2bc6a74f2bc595855eaccecb4766bed9802779fbdb7d4bec848f96856743d775ec0d594f41cad0823a913a04515649f081ea414c0d67e4937c148db
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCp:bgGYcA/53GAGgIvFE
- TLSH T1381374387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F65DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2948-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000c000000016cdc-13.dat CryptoLocker_rule2 behavioral2/memory/824-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/824-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 824 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_6f3731071ab7cd895bd269687ba17891_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 2948 wrote to memory of 824 2948 2026-08-01_6f3731071ab7cd895bd269687ba17891_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-01_6f3731071ab7cd895bd269687ba17891_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-01_6f3731071ab7cd895bd269687ba17891_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2948 -
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:824
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 1dea66dbb809673c787d68d87f5fb881c9918d5ebbe0dd80a19bf430890a4ac1
- MD5 3794f6ff5cc4b9fecb25134cd98bb20c
- SHA1 aec18f33bb85e60660000a4d1ffa5980b2cfce59
- SHA512 7f046f0607b75eb4b564ad570b8acf6071cc0708becd5512a8a2a2efc02deb8ed49fbd04a2449230cb5e48a0034614147d9eee6c5056334088877d3d23ad80ff
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCe:bgGYcA/53GAGgIvFn
- TLSH T18E1374387FE62972E37BDFB586F691C67975B8223D16880D40CA53844833F62DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH