Analysis
- max time kernel
150s - max time network
148s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
28/05/2026, 08:53
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-28_eda5c2698f810468ca62f6d08a73d38b_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-28_eda5c2698f810468ca62f6d08a73d38b_cryptolocker_elex.exe
Resource
win11-20260513-en
5 signatures
150 seconds
General
- Target 2026-05-28_eda5c2698f810468ca62f6d08a73d38b_cryptolocker_elex.exe
- Size 38KB
- Sample260528-ktfarabs6k
- SHA256 de1dba87b008673aaa84419a2a48030de71bca0be28747550b82464461b05fec
- MD5 eda5c2698f810468ca62f6d08a73d38b
- SHA1 deba3d25fce93571d2a7bb1d4204d22676f95109
- SHA512 114428867fb3d35e708c30816710aefc32924140f3dde0ad675a3e64aaaa2a27716358534c7d725117b081ca8c9b04b37ad02460fec1d2cd8712fa3dc3ffb313
- SSDEEP 768:bg74zYcgT/Ekd0ryfjpRVz/mwTYAYf1tb:bg6YcA/X6Gtbz/YAc
- TLSH T1290386386BE62972E37BDE7586F791C2B939B8223D15880D54CF53844C33B52EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/1944-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1944-3-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001700000002601f-14.dat CryptoLocker_rule2 behavioral2/memory/1624-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1624-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1624 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 2026-05-28_eda5c2698f810468ca62f6d08a73d38b_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 1944 wrote to memory of 1624 1944 2026-05-28_eda5c2698f810468ca62f6d08a73d38b_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-28_eda5c2698f810468ca62f6d08a73d38b_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-28_eda5c2698f810468ca62f6d08a73d38b_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1944 -
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:1624
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 38KB
- SHA256 248a839cd21bb4b42071b84d7a0d4ea1f3ed86707c29ceb90beda94c631293cd
- MD5 b7d29117573ecce0f7109f77801e235b
- SHA1 a0fbec30821e2b0518a202ffafc79da00a3fbddd
- SHA512 56ab60d0adf24ed876c1dd301bac7566d216d677a174a3b73559ea09f394205633c494e41147b0c27b53e46dd8321ccd4bbf584e0e94906e59810b749582c7ea
- SSDEEP 768:bg74zYcgT/Ekd0ryfjpRVz/mwTYAYf1te:bg6YcA/X6Gtbz/YA9
- TLSH T1D60385386BE62972E37BDE7596F791C2B939B8223D15880D54CB53844C33B52EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH