Analysis Overview
SHA256
7c5dfd8a6850d5ffc00cdefde5485c871468941459b8d45a73808a7bfcfa2401
Threat Level: Known bad
The file 2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Enumerates physical storage devices
Unsigned PE
Modifies system certificate store
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-26 03:48
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-26 03:48
Reported
2024-05-26 03:51
Platform
win10v2004-20240508-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\demka.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\demka.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4776 wrote to memory of 3024 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\demka.exe |
| PID 4776 wrote to memory of 3024 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\demka.exe |
| PID 4776 wrote to memory of 3024 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\demka.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\demka.exe
"C:\Users\Admin\AppData\Local\Temp\demka.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ttms.org | udp |
| US | 35.215.114.222:443 | ttms.org | tcp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 222.114.215.35.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 11.97.55.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 177.101.63.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 1.173.189.20.in-addr.arpa | udp |
Files
memory/4776-0-0x0000000002120000-0x0000000002126000-memory.dmp
memory/4776-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/4776-2-0x0000000002120000-0x0000000002126000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\demka.exe
| MD5 | 28ba00f78909d081a7682f0a09d08416 |
| SHA1 | 7bcbb05cdd23e10a49ad5e0084b98faafea658a5 |
| SHA256 | bf8faf6570d9d6b8c28a69b24fbf8282ef01ef67dd7bf5508581316dc36e2b1f |
| SHA512 | a08cfedff84e737f317a71dee8a782d2c7835b06da22e454cb2277c749d62ea0cee0a0848e25dd232f8048a27217475b232e2a6228199b95659ba62cace31c3e |
memory/3024-25-0x00000000006F0000-0x00000000006F6000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\medkem.exe
| MD5 | 5713be59382522e709b67fcc47577b2e |
| SHA1 | 97f3e8e234ecde5ef9d04a4f03d131d64f0676c8 |
| SHA256 | b46c87dc12d0d814b0520752f63d145c0766bc2731b1fe3255fd410457003ada |
| SHA512 | 7e699fdc6ac3d354b7ea7d5ae087676ebe33af5c9d3de042112b0199090f24bdd65714b4fdaef693db78504a03b1c795d2f8be1796533ea927d68544a4fd2a30 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-26 03:48
Reported
2024-05-26 03:51
Platform
win7-20240221-en
Max time kernel
119s
Max time network
124s
Command Line
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\demka.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe | N/A |
Enumerates physical storage devices
Modifies system certificate store
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8 | C:\Users\Admin\AppData\Local\Temp\demka.exe | N/A |
| Set value (data) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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 | C:\Users\Admin\AppData\Local\Temp\demka.exe | N/A |
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\demka.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1400 wrote to memory of 2520 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\demka.exe |
| PID 1400 wrote to memory of 2520 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\demka.exe |
| PID 1400 wrote to memory of 2520 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\demka.exe |
| PID 1400 wrote to memory of 2520 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\demka.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\demka.exe
"C:\Users\Admin\AppData\Local\Temp\demka.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | ttms.org | udp |
| US | 35.215.114.222:443 | ttms.org | tcp |
Files
memory/1400-8-0x0000000000360000-0x0000000000366000-memory.dmp
memory/1400-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/1400-0-0x0000000000360000-0x0000000000366000-memory.dmp
\Users\Admin\AppData\Local\Temp\demka.exe
| MD5 | 28ba00f78909d081a7682f0a09d08416 |
| SHA1 | 7bcbb05cdd23e10a49ad5e0084b98faafea658a5 |
| SHA256 | bf8faf6570d9d6b8c28a69b24fbf8282ef01ef67dd7bf5508581316dc36e2b1f |
| SHA512 | a08cfedff84e737f317a71dee8a782d2c7835b06da22e454cb2277c749d62ea0cee0a0848e25dd232f8048a27217475b232e2a6228199b95659ba62cace31c3e |
memory/2520-23-0x0000000000260000-0x0000000000266000-memory.dmp