Analysis
- max time kernel
128s - max time network
137s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system - submitted
13/06/2024, 03:52
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2024-06-13_dc73e9787e443696011245939e6900a7_cryptolocker.exe
Resource
win7-20240611-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-06-13_dc73e9787e443696011245939e6900a7_cryptolocker.exe
Resource
win10v2004-20240611-en
5 signatures
150 seconds
General
- Target 2024-06-13_dc73e9787e443696011245939e6900a7_cryptolocker.exe
- Size 63KB
- Sample240613-ee99paxbjp
- SHA256 059eef54c0a868121ad2df0924639d4f622774250368e5217fde1d2da48fd669
- MD5 dc73e9787e443696011245939e6900a7
- SHA1 cfcf1b840ba13fb05753f753cc1b76602bf28788
- SHA512 3fb6e6742c85b626e29a6802ae73235ffd0341f80da42a99d49b2038c93fcf2c03d2684e7687a3d291e16d968c258da13961623996ab665a613e64e900f6d309
- SSDEEP 1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnTA:btng54SMLr+/AO/kIhfoKMHdac
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x00090000000234d5-12.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-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation 2024-06-13_dc73e9787e443696011245939e6900a7_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation gewos.exe - Executes dropped EXE 1 IoCs
pid Process 2332 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 716 wrote to memory of 2332 716 2024-06-13_dc73e9787e443696011245939e6900a7_cryptolocker.exe 92 PID 716 wrote to memory of 2332 716 2024-06-13_dc73e9787e443696011245939e6900a7_cryptolocker.exe 92 PID 716 wrote to memory of 2332 716 2024-06-13_dc73e9787e443696011245939e6900a7_cryptolocker.exe 92
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-13_dc73e9787e443696011245939e6900a7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_dc73e9787e443696011245939e6900a7_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:716 -
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:2332
-
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3964,i,6522675234395427298,2952738987384583032,262144 --variations-seed-version --mojo-platform-channel-handle=2812 /prefetch:81⤵PID:2640
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 c67f817fba82ae5e7864ef14cd12e00dec62d9e673a8a692e6511522b82a15df
- MD5 1dec4c75db2dacdb3327567242437368
- SHA1 c8805340e6670e03bef051f77191cf8db1fb9a51
- SHA512 882a66c6c535fa6bf9db130173c3965572ce849039d9eba5e87a3a21e4882cb02af8cc2857200ced8194da4792c2cfe10f73b36e06c5ad538380065645fe2814
- SSDEEP 1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnTz:btng54SMLr+/AO/kIhfoKMHdaP
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\gewosik.exe
- Size 185B
- SHA256 11b8a6b33da5288befdd8130ee36798a7711d1746a4551d6653b5565a987278d
- MD5 3e14d5c0e67f76424b67b8c2a495d724
- SHA1 dca0492ebe78489c96421ceedaece5e1cb498d1a
- SHA512 e4592bc9aa99d5a630b1b5c7d329bfc9108a232fca96e32ea78c54f23317dbf372cc63ba2b05d85c0b0bdb8fe23d7320e9debd6cf84ff1794a6a0ef0b994ed2b
- MD5 SHA1 SHA512