Analysis
- max time kernel
140s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system - submitted
25/01/2024, 17:30
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2024-01-25_63847b10ddcb5fc2e1b1385fa1bd6f56_cryptolocker.exe
Resource
win7-20231215-en
0 signatures
150 seconds
General
- Target 2024-01-25_63847b10ddcb5fc2e1b1385fa1bd6f56_cryptolocker.exe
- Size 39KB
- Sample240125-v27ebacehk
- SHA256 156804f2cb2aa2929a317836c58a7b6bd84cd311192a1cd1b5cdbfffd24e271e
- MD5 63847b10ddcb5fc2e1b1385fa1bd6f56
- SHA1 87de33a92cc16754cafdd3dd71f41939b6853a88
- SHA512 9a5f04d965932d0e5258cc22e689dabef9047cdc74f18962a5225409b8afa2902ef0f4fd927d2bf5c180c1a961a24b47ed503588622f3f97633d9bb49df7e066
- SSDEEP 768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenQL3bTo:ZzFbxmLPWQMOtEvwDpjLeU3w
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0009000000022480-13.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 2024-01-25_63847b10ddcb5fc2e1b1385fa1bd6f56_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation misid.exe - Executes dropped EXE 1 IoCs
pid Process 3276 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 2696 wrote to memory of 3276 2696 2024-01-25_63847b10ddcb5fc2e1b1385fa1bd6f56_cryptolocker.exe 89 PID 2696 wrote to memory of 3276 2696 2024-01-25_63847b10ddcb5fc2e1b1385fa1bd6f56_cryptolocker.exe 89 PID 2696 wrote to memory of 3276 2696 2024-01-25_63847b10ddcb5fc2e1b1385fa1bd6f56_cryptolocker.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-01-25_63847b10ddcb5fc2e1b1385fa1bd6f56_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_63847b10ddcb5fc2e1b1385fa1bd6f56_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2696 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:3276
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\misid.exe
- Size 39KB
- SHA256 47de8c60f74196b60d84064b1441c07937100ecf9d4cb0984b6739467eed60a7
- MD5 8dcd10cfeb5bfc0c6b221139de7ef1e9
- SHA1 d80b7e0fbaa7097132351133a4c5ebd42f4ffdd5
- SHA512 1f5b3eb19acfefa244d969d155bf26e1d2585b0d63ca377627cfa30cfb06a6a9a96af56886faa2e6f30cc8b7c955f0c2c67542d225b0f5d4446538166d1b5f8e
- SSDEEP 768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenQL3bTx:ZzFbxmLPWQMOtEvwDpjLeU3J
- MD5 SHA1 SHA512 SSDEEP