Analysis
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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 12:48
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-13_d6313f81f3fefe7ba975ee557a9fbfa5_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-13_d6313f81f3fefe7ba975ee557a9fbfa5_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-13_d6313f81f3fefe7ba975ee557a9fbfa5_cryptolocker.exe
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Size
42KB
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MD5
d6313f81f3fefe7ba975ee557a9fbfa5
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SHA1
d0bfaa35a12731ba498cc2fcff06001a4b76d3d5
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SHA256
dad68d5c20fd940f28a319474cde46444a36cf353b12eecf400730745fa7f763
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SHA512
6384c73961da5719ece5af433b20190a725b9f084eef711b17220ca124febad5a383948fcebb8c0aaf8ff86c30e9400430622fc9df8a5eaf6aa8d112a1ca5a2d
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SSDEEP
768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDb7xfu:ZzFbxmLPWQMOtEvwDpjLeJAsKcb7Zu
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_rule2 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-06-13_d6313f81f3fefe7ba975ee557a9fbfa5_cryptolocker.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-06-13_d6313f81f3fefe7ba975ee557a9fbfa5_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
misid.exepid process 2348 misid.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
Processes:
2024-06-13_d6313f81f3fefe7ba975ee557a9fbfa5_cryptolocker.exedescription pid process target process PID 1780 wrote to memory of 2348 1780 2024-06-13_d6313f81f3fefe7ba975ee557a9fbfa5_cryptolocker.exe misid.exe PID 1780 wrote to memory of 2348 1780 2024-06-13_d6313f81f3fefe7ba975ee557a9fbfa5_cryptolocker.exe misid.exe PID 1780 wrote to memory of 2348 1780 2024-06-13_d6313f81f3fefe7ba975ee557a9fbfa5_cryptolocker.exe misid.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-13_d6313f81f3fefe7ba975ee557a9fbfa5_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_d6313f81f3fefe7ba975ee557a9fbfa5_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1780 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2348
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
42KB
MD538f8e2281f871a0223d64bdfb51e38b8
SHA160b6dd562e0425ddeaac9fe614c84354d44794e3
SHA256cbbd1a435934bb1caa8b6c9de2ea103e87b7a7646c6a46cadffe252e971ff647
SHA5121b2852cb346858916c0c772fcc72af1675a9051565589a498e967cc2009e9b78b71f847934d9965d5afffa35bde11b6ffae8e4bd36a6126cf8df52ebaaf83f2d