Analysis
- max time kernel
150s - 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
09/08/2026, 23:48
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-09_aae49ae40665ee79ace7ab4d74851045_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_aae49ae40665ee79ace7ab4d74851045_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-09_aae49ae40665ee79ace7ab4d74851045_cryptolocker_elex.exe
- Size 48KB
- Sample260809-3tmnyaxemg
- SHA256 bf77b4e0fce63f07c9d49332e656474765893944e5ec05e577250640a473f4f8
- MD5 aae49ae40665ee79ace7ab4d74851045
- SHA1 320cd274ebbd00db0ce731c55805b06dd29d510d
- SHA512 591e02303f614cfff21f64e36b5b249f448f1e922eb0838f0ba023c52456b764af40b12031c0379d498bc001fb8342a15a9278f103162bea5614d48dffbd9bad
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKJTAN:bgGYcA/53GAGgIvF9v2ZZN
- TLSH T1FE2345387FE66972E37BCFB586F651C6B935B8223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4960-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000024505-13.dat CryptoLocker_rule2 behavioral1/memory/1440-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1440-19-0x0000000008000000-0x000000000800A000-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-1-5-21-876885714-46325919-1482798410-1000\Control Panel\International\Geo\Nation 2026-08-09_aae49ae40665ee79ace7ab4d74851045_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 1440 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_aae49ae40665ee79ace7ab4d74851045_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4960 wrote to memory of 1440 4960 2026-08-09_aae49ae40665ee79ace7ab4d74851045_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_aae49ae40665ee79ace7ab4d74851045_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_aae49ae40665ee79ace7ab4d74851045_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4960 -
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:1440
-
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 8751dc8c1b7e533040ec3ab74a86adf461f48f8cdcdecceb70c8c5cbe7f860b8
- MD5 af2d8eaa7138a6d3fc2516e049c257f5
- SHA1 bbdf9a1ee37f0c993c700bef30040ea7471520df
- SHA512 27e0cd0e09373ddce285021f46889f16f4ee041f7dfabaa545c00ddedd7ce81b8175f3bbff4a783185fd9033436181d6f04d9e29af357649168a8a37acb8c8c0
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKJTAA:bgGYcA/53GAGgIvF9v2ZZA
- TLSH T15C3344387FE66972E37BCFB586F651C6B935B8223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH