Analysis
- max time kernel
93s - max time network
122s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system - submitted
10/06/2024, 05:53
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2024-06-10_88519d4e3c75aa1b6c0198a7055013c2_cryptolocker.exe
Resource
win7-20240220-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-06-10_88519d4e3c75aa1b6c0198a7055013c2_cryptolocker.exe
Resource
win10v2004-20240508-en
5 signatures
150 seconds
General
- Target 2024-06-10_88519d4e3c75aa1b6c0198a7055013c2_cryptolocker.exe
- Size 63KB
- Sample240610-gltavsdf44
- SHA256 cedf4153a2a8b53d3066c5fdff04ad86cd08c602e826631f4488e3c374e26e4c
- MD5 88519d4e3c75aa1b6c0198a7055013c2
- SHA1 ce68b154f0ee32ef65026af303f529ed36067efe
- SHA512 e9170ef45ef6ff0aec98fd570f7a8616e54615405dcf1bb30e54ffb03dd48efa284f4acc6886b0edfd3c6456c5d4e42a5077e27ecdfb341aca696588e2361016
- SSDEEP 1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnF7Hp:btng54SMLr+/AO/kIhfoKMHda3
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000800000002341c-12.dat 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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 2024-06-10_88519d4e3c75aa1b6c0198a7055013c2_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation gewos.exe - Executes dropped EXE 1 IoCs
pid Process 1248 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 4728 wrote to memory of 1248 4728 2024-06-10_88519d4e3c75aa1b6c0198a7055013c2_cryptolocker.exe 82 PID 4728 wrote to memory of 1248 4728 2024-06-10_88519d4e3c75aa1b6c0198a7055013c2_cryptolocker.exe 82 PID 4728 wrote to memory of 1248 4728 2024-06-10_88519d4e3c75aa1b6c0198a7055013c2_cryptolocker.exe 82
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-10_88519d4e3c75aa1b6c0198a7055013c2_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-10_88519d4e3c75aa1b6c0198a7055013c2_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4728 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:1248
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\gewos.exe
- Size 63KB
- SHA256 1c86f649e4d093d16b70edbb1898fb93fa39e7950fa132c11876252653342ab4
- MD5 fc64a426a916035f1d94a077dd14510a
- SHA1 bef7476f1c678ae1bc915befa562db67f837b91a
- SHA512 fd822b6f45497fcde3c7c22e3ce0fd935083e1bf9ca189fee9e4f2ffa0d456db6e12d164bb40e38754bb6b44438359bd5611001147355991093bd9a0dcac1c4e
- SSDEEP 1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnF7HWn:btng54SMLr+/AO/kIhfoKMHda2
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\gewosik.exe
- Size 185B
- SHA256 238e6f4a56d8c975934424598a7f6e2d3c4d7513feffaed5d620fc9b23e1e51b
- MD5 ae0aee59ccc22df285dfa6919228f921
- SHA1 f8e321731f73a46bcc8c1e167aaf32f3ad77f5a6
- SHA512 40cbc526a5aa6bf88a8546589e3553c8d6ec0384eee5ce7185007a9c5eb10b270e626718b8cdf40280df666a13c51b624fa9b8d177e16e983d5e37eebd083c8e
- MD5 SHA1 SHA512