Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system - submitted
13/06/2024, 09:21
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2024-06-13_296bf73fc0816ca2cc213b933e215369_cryptolocker.exe
Resource
win7-20240611-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-06-13_296bf73fc0816ca2cc213b933e215369_cryptolocker.exe
Resource
win10v2004-20240508-en
5 signatures
150 seconds
General
- Target 2024-06-13_296bf73fc0816ca2cc213b933e215369_cryptolocker.exe
- Size 63KB
- Sample240613-lbsc2asfka
- SHA256 4eb0276df090659f07f1fb15161a93021fc82ea298e70b8788980d25334bbf8d
- MD5 296bf73fc0816ca2cc213b933e215369
- SHA1 d8e5ed01bc848c64d0d529980c49b51d81713a88
- SHA512 b062477918508f645fe26e82a440278b1d02a0b4b2818acc2f9cda2a1597245a70df405a0234a8521ab132029a8f4f2678d7e8dc82dff8a72231173dc9195e37
- SSDEEP 1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHOB:btng54SMLr+/AO/kIhfoKMHdj
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000500000002326f-12.dat 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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation 2024-06-13_296bf73fc0816ca2cc213b933e215369_cryptolocker.exe - Executes dropped EXE 1 IoCs
pid Process 2896 gewos.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1520 wrote to memory of 2896 1520 2024-06-13_296bf73fc0816ca2cc213b933e215369_cryptolocker.exe 81 PID 1520 wrote to memory of 2896 1520 2024-06-13_296bf73fc0816ca2cc213b933e215369_cryptolocker.exe 81 PID 1520 wrote to memory of 2896 1520 2024-06-13_296bf73fc0816ca2cc213b933e215369_cryptolocker.exe 81
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-13_296bf73fc0816ca2cc213b933e215369_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_296bf73fc0816ca2cc213b933e215369_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1520 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Executes dropped EXE
PID:2896
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\gewos.exe
- Size 64KB
- SHA256 50ccef2c8d98e137850c8849ae9624cbc9aef46b5973ec03400a7a146cc24ee8
- MD5 9991bcaa6734bb1bf6a07710fd34b10e
- SHA1 8a6e3478743111d8595431d8eadbab1348a0fdf2
- SHA512 f2865603304b5867f67dfc0e2c1f447f0d8a9645cde0cf1a61141010fd4a50d34bbf20dd3d03e38375a1b3e5d7f26dd8e21e39b080d3a9fb40ed8130197102e0
- SSDEEP 1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHOv:btng54SMLr+/AO/kIhfoKMHdt
- MD5 SHA1 SHA512 SSDEEP