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
12/06/2024, 15:51
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2024-06-12_3be486487470959a1df7b40b76dd6c5a_cryptolocker.exe
Resource
win7-20231129-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-06-12_3be486487470959a1df7b40b76dd6c5a_cryptolocker.exe
Resource
win10v2004-20240508-en
5 signatures
150 seconds
General
- Target 2024-06-12_3be486487470959a1df7b40b76dd6c5a_cryptolocker.exe
- Size 38KB
- Sample240612-tapvhs1akc
- SHA256 5c605be0617ac8485eb47f5f8a1955515c4044d62d16712525f0b482362d9a35
- MD5 3be486487470959a1df7b40b76dd6c5a
- SHA1 ee246191ab100b4bb4ec7c96083d2c78dce464e0
- SHA512 fd245ee358f0d2060bab3f349ea4a83bdc70cfe3367a678725897703f0a3a4259afc9d7d2c7699ffd7b67cb1364cac5394b2c8c497f43056ea3c21b03f3b61b9
- SSDEEP 384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSy3Pk:btB9g/WItCSsAGjX7e9N0hunRv/k
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0006000000023278-12.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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation 2024-06-12_3be486487470959a1df7b40b76dd6c5a_cryptolocker.exe - Executes dropped EXE 1 IoCs
pid Process 1748 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 3140 wrote to memory of 1748 3140 2024-06-12_3be486487470959a1df7b40b76dd6c5a_cryptolocker.exe 83 PID 3140 wrote to memory of 1748 3140 2024-06-12_3be486487470959a1df7b40b76dd6c5a_cryptolocker.exe 83 PID 3140 wrote to memory of 1748 3140 2024-06-12_3be486487470959a1df7b40b76dd6c5a_cryptolocker.exe 83
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-12_3be486487470959a1df7b40b76dd6c5a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-12_3be486487470959a1df7b40b76dd6c5a_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3140 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Executes dropped EXE
PID:1748
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\gewos.exe
- Size 39KB
- SHA256 e58f541f42373ce5865701a3d2edfd9b0ec3252b10b4f0b8b218c76a45abb990
- MD5 aff66f658c9c6795882ecb73bd833ef6
- SHA1 333f9dfb94f074744c8602ac8aa31f8fced99c11
- SHA512 9efdbfa3b53b4911d0dc53e4b9da08d1bf9d6e26629f1c7e15e0da27629f660b03d55a42194a92c34859c2dcea14fbe5c90b14a1a979d5fda93b777e3dd808b5
- SSDEEP 384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSy3PG:btB9g/WItCSsAGjX7e9N0hunRv/G
- MD5 SHA1 SHA512 SSDEEP