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, 01:40
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2024-06-13_aa4094ab32d8bed222a40fea20446e85_cryptolocker.exe
Resource
win7-20240221-en
5 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-06-13_aa4094ab32d8bed222a40fea20446e85_cryptolocker.exe
Resource
win10v2004-20240508-en
5 signatures
150 seconds
General
- Target 2024-06-13_aa4094ab32d8bed222a40fea20446e85_cryptolocker.exe
- Size 42KB
- Sample240613-b3ssrstbmn
- SHA256 244ed9a26217a66fc77b78ce199cd89d3ffb780eead7468581bb0d26df30a607
- MD5 aa4094ab32d8bed222a40fea20446e85
- SHA1 7bda3f02eb50502e6af1c289f8cb69596ea31492
- SHA512 e1af3032d92729b3b7f1e657333deb98fb471c051f07a39f97f0a538a489f2af325cab1f44a92336155b8bb8ac7a8de6a29b5bc3a5f60f9b3e4a3c47ea50e4c6
- SSDEEP 768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDb7xS:ZzFbxmLPWQMOtEvwDpjLeJAsKcb7A
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0008000000022f51-13.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 2024-06-13_aa4094ab32d8bed222a40fea20446e85_cryptolocker.exe - Executes dropped EXE 1 IoCs
pid Process 3100 misid.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 1680 wrote to memory of 3100 1680 2024-06-13_aa4094ab32d8bed222a40fea20446e85_cryptolocker.exe 82 PID 1680 wrote to memory of 3100 1680 2024-06-13_aa4094ab32d8bed222a40fea20446e85_cryptolocker.exe 82 PID 1680 wrote to memory of 3100 1680 2024-06-13_aa4094ab32d8bed222a40fea20446e85_cryptolocker.exe 82
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-13_aa4094ab32d8bed222a40fea20446e85_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_aa4094ab32d8bed222a40fea20446e85_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:3100
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\misid.exe
- Size 42KB
- SHA256 1474441a2047ba64cda1fb9e089804f146526131890fe7a1d9672b9f07204683
- MD5 7fe028140d017c56f491f711da287fc0
- SHA1 cde4ce5e597b469a06530a045446950035c0a2ee
- SHA512 a7384198108bfacbb5290681c428caff819dc35c07f968262f1d19710c36713e83412bcbe8bb7507ab6d91a54e245270a0e1c0047336a8b114733e5d8bca6441
- SSDEEP 768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDb7xC:ZzFbxmLPWQMOtEvwDpjLeJAsKcb7w
- MD5 SHA1 SHA512 SSDEEP