Analysis Overview
SHA256
5ec61f5a1d05c4c65b3416e73daa69b8453d62140cdadf5f3b967fd66cdb6ceb
Threat Level: Known bad
The file 2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker was found to be: Known bad.
Malicious Activity Summary
UPX dump on OEP (original entry point)
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
UPX dump on OEP (original entry point)
UPX packed file
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Unsigned PE
Enumerates physical storage devices
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-02 05:22
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX packed file
| 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: behavioral1
Detonation Overview
Submitted
2024-06-02 05:22
Reported
2024-06-02 05:25
Platform
win7-20240221-en
Max time kernel
122s
Max time network
122s
Command Line
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| 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\gewos.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Enumerates physical storage devices
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gewos.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2860 wrote to memory of 2116 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2860 wrote to memory of 2116 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2860 wrote to memory of 2116 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2860 wrote to memory of 2116 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\gewos.exe
"C:\Users\Admin\AppData\Local\Temp\gewos.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 35.212.119.5:443 | nasap.net | tcp |
Files
memory/2860-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2860-1-0x00000000005C0000-0x00000000005C6000-memory.dmp
memory/2860-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2860-9-0x00000000005C0000-0x00000000005C6000-memory.dmp
\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | c2f7c450456777d0bbd7c871567731db |
| SHA1 | 7e003d132fdacd1cbe4cc4daa0eb534f78523a45 |
| SHA256 | 5c10a9ac7d93af10f0979da619232bb83d4f0f01eb059fbcdd8f6bff8bcc86ee |
| SHA512 | 33e9f599be7a6743265995c2d0ace6223ae0a508037d1181a8394506292275aa38b9cced192e67dfa795cbc1aea1908a4af04ed4db669a577a24bc354b6126ec |
memory/2860-13-0x0000000000810000-0x000000000081E000-memory.dmp
memory/2116-17-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2116-26-0x0000000000210000-0x0000000000216000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-02 05:22
Reported
2024-06-02 05:25
Platform
win10v2004-20240426-en
Max time kernel
90s
Max time network
123s
Command Line
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\gewos.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gewos.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1140 wrote to memory of 2584 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 1140 wrote to memory of 2584 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 1140 wrote to memory of 2584 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\gewos.exe
"C:\Users\Admin\AppData\Local\Temp\gewos.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 35.212.119.5:443 | nasap.net | tcp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 5.119.212.35.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 226.20.18.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
Files
memory/1140-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1140-1-0x0000000000500000-0x0000000000506000-memory.dmp
memory/1140-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/1140-9-0x0000000000500000-0x0000000000506000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | c2f7c450456777d0bbd7c871567731db |
| SHA1 | 7e003d132fdacd1cbe4cc4daa0eb534f78523a45 |
| SHA256 | 5c10a9ac7d93af10f0979da619232bb83d4f0f01eb059fbcdd8f6bff8bcc86ee |
| SHA512 | 33e9f599be7a6743265995c2d0ace6223ae0a508037d1181a8394506292275aa38b9cced192e67dfa795cbc1aea1908a4af04ed4db669a577a24bc354b6126ec |
memory/2584-19-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2584-21-0x0000000002190000-0x0000000002196000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewosik.exe
| MD5 | 4f0ca1b622d722145d4362acd91c5ce5 |
| SHA1 | ddab15c0781a9c08bae9e6366d47f1be91708851 |
| SHA256 | 2bd91df1429af0bf0a2a68156d3be3379a20313d8537b7ba495c1c2812e34a5d |
| SHA512 | 77915e078ddf6caadd2b367fdccbbe0cc5435b106636f49bca58ab2e8514350ef21b4c8741da520d4b41e1233ee0cec3b96c025a588201cba622831a7387021c |