Analysis
- max time kernel
149s - 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
20/08/2026, 01:02
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_e5681c4650666d28e9b947264597bef2_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_e5681c4650666d28e9b947264597bef2_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-08-20_e5681c4650666d28e9b947264597bef2_cryptolocker_elex.exe
- Size 47KB
- Sample260820-bdr5yacp21
- SHA256 ff4c9f7468fa35ae131ff13ebe86b1106918412d5b56ef3ba550ae3c2403c102
- MD5 e5681c4650666d28e9b947264597bef2
- SHA1 5c952b6bd868ec52e11e57a80401da3f0be5eb97
- SHA512 68a775f48995f146f9d4dba152846be7fcad771b364dac9fa0fda2c600da568471bd9c998c76e65918286523d23eb3b51400566d3d297704b1e8fdb895a793ef
- SSDEEP 768:bxNQIE0eBhkL2Fo1Cbw4fj6lgMAeWwxwSDyrpOlRPqJ:bxNrC7kYo1A577elxwS6OLi
- TLSH T11523EB38AED52972D3BBDAB9C9F651C7B879B4623A018C4E50CB17440C23F17EDA161E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4036-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b0000000242ff-13.dat CryptoLocker_rule2 behavioral1/memory/784-17-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral1/memory/784-25-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation pissa.exe Key value queried \REGISTRY\USER\S-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation 2026-08-20_e5681c4650666d28e9b947264597bef2_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 784 pissa.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 2026-08-20_e5681c4650666d28e9b947264597bef2_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language pissa.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4036 wrote to memory of 784 4036 2026-08-20_e5681c4650666d28e9b947264597bef2_cryptolocker_elex.exe 87
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_e5681c4650666d28e9b947264597bef2_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_e5681c4650666d28e9b947264597bef2_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4036 -
C:\Users\Admin\AppData\Local\Temp\pissa.exe"C:\Users\Admin\AppData\Local\Temp\pissa.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:784
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\pissa.exe
- Size 47KB
- SHA256 9aab0646f5761556db6ca54075fe1d45a3f47cf5278356795d10039c3b261cef
- MD5 fc2ed98d8aa0ab1e347d9c8c3e6f9556
- SHA1 389794dec633298f1ac74ee60d80b304d4ae1ba4
- SHA512 6d6308fff712b631a820f6e4f398f88597b7941c53465de8e672fb05ab61dea023a3d19c68f6dc41e54b4682b9ab5ca37fe5f252b91de3c3dd9676a9ad8d0a34
- SSDEEP 768:bxNQIE0eBhkL2Fo1Cbw4fj6lgMAeWwxwSDyrpOlRPq6:bxNrC7kYo1A577elxwS6OLZ
- TLSH T1BE23FB38AED52972E3BBDAB5C9F651C7B879B4623A018C4E50CB17440C23F17EDA161E
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\pissec.exe
- Size 114B
- SHA256 6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023
- MD5 e89f75f918dbdcee28604d4e09dd71d7
- SHA1 f9d9055e9878723a12063b47d4a1a5f58c3eb1e9
- SHA512 8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0
- TLSH T1EEB092DDBC61E48018E535511EA3B60D146A22EBB9018B4018C00836A96035F8D0AAC5
- MD5 SHA1 SHA512 TLSH