Analysis Overview
SHA256
dc31e710277eac1b125de6f4626765a2684d992147691a33964e368e5f269cba
Threat Level: Known bad
The file CrimsonRAT.exe was found to be: Known bad.
Malicious Activity Summary
CrimsonRAT main payload
CrimsonRat
Crimsonrat family
Checks computer location settings
Executes dropped EXE
Drops file in Program Files directory
Enumerates physical storage devices
Unsigned PE
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-30 16:51
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-30 16:51
Reported
2024-11-30 16:54
Platform
win7-20240708-en
Max time kernel
146s
Max time network
150s
Command Line
Signatures
CrimsonRAT main payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
CrimsonRat
Crimsonrat family
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\Hdlharas\dlrarhsiva.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\PROGRA~3\Hdlharas\dlrarhsiva.exe | C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe | N/A |
| File opened for modification | C:\PROGRA~3\Hdlharas\dlrarhsiva.exe | C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2356 wrote to memory of 2744 | N/A | C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe | C:\ProgramData\Hdlharas\dlrarhsiva.exe |
| PID 2356 wrote to memory of 2744 | N/A | C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe | C:\ProgramData\Hdlharas\dlrarhsiva.exe |
| PID 2356 wrote to memory of 2744 | N/A | C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe | C:\ProgramData\Hdlharas\dlrarhsiva.exe |
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe
"C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe"
C:\ProgramData\Hdlharas\dlrarhsiva.exe
"C:\ProgramData\Hdlharas\dlrarhsiva.exe"
Network
| Country | Destination | Domain | Proto |
| FR | 185.136.161.124:6128 | tcp | |
| FR | 185.136.161.124:8761 | tcp | |
| FR | 185.136.161.124:11614 | tcp | |
| FR | 185.136.161.124:15822 | tcp |
Files
memory/2356-0-0x000007FEF5B63000-0x000007FEF5B64000-memory.dmp
memory/2356-1-0x0000000000A80000-0x0000000000A9E000-memory.dmp
memory/2356-2-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp
C:\PROGRA~3\Hdlharas\mdkhm.zip
| MD5 | b635f6f767e485c7e17833411d567712 |
| SHA1 | 5a9cbdca7794aae308c44edfa7a1ff5b155e4aa8 |
| SHA256 | 6838286fb88e9e4e68882601a13fa770f1b510a0a86389b6a29070a129bf2e5e |
| SHA512 | 551ba05bd44e66685f359802b35a8c9775792a12844906b4b53e1a000d56624c6db323754331c9f399072790991c1b256d9114a50fb78111652a1c973d2880af |
C:\ProgramData\Hdlharas\dlrarhsiva.exe
| MD5 | 64261d5f3b07671f15b7f10f2f78da3f |
| SHA1 | d4f978177394024bb4d0e5b6b972a5f72f830181 |
| SHA256 | 87f51b4632c5fbc351a59a234dfefef506d807f2c173aac23162b85d0d73c2ad |
| SHA512 | 3a9ff39e6bc7585b0b03f7327652e4c3b766563e8b183c25b6497e30956945add5684f1579862117e44c6bac2802601fc7c4d2a0daa1824f16c4da1fd6c9c91a |
memory/2744-27-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp
memory/2744-28-0x00000000009F0000-0x0000000001304000-memory.dmp
memory/2744-29-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp
memory/2356-30-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp
memory/2744-31-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-30 16:51
Reported
2024-11-30 16:54
Platform
win10v2004-20241007-en
Max time kernel
145s
Max time network
149s
Command Line
Signatures
CrimsonRAT main payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
CrimsonRat
Crimsonrat family
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\Hdlharas\dlrarhsiva.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4688 wrote to memory of 2392 | N/A | C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe | C:\ProgramData\Hdlharas\dlrarhsiva.exe |
| PID 4688 wrote to memory of 2392 | N/A | C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe | C:\ProgramData\Hdlharas\dlrarhsiva.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe
"C:\Users\Admin\AppData\Local\Temp\CrimsonRAT.exe"
C:\ProgramData\Hdlharas\dlrarhsiva.exe
"C:\ProgramData\Hdlharas\dlrarhsiva.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| FR | 185.136.161.124:6128 | tcp | |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 107.12.20.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| FR | 185.136.161.124:8761 | tcp | |
| US | 8.8.8.8:53 | 75.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| FR | 185.136.161.124:11614 | tcp | |
| FR | 185.136.161.124:15822 | tcp |
Files
memory/4688-0-0x00007FFD37FB3000-0x00007FFD37FB5000-memory.dmp
memory/4688-1-0x0000024A0BD70000-0x0000024A0BD8E000-memory.dmp
memory/4688-2-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp
C:\ProgramData\Hdlharas\mdkhm.zip
| MD5 | b635f6f767e485c7e17833411d567712 |
| SHA1 | 5a9cbdca7794aae308c44edfa7a1ff5b155e4aa8 |
| SHA256 | 6838286fb88e9e4e68882601a13fa770f1b510a0a86389b6a29070a129bf2e5e |
| SHA512 | 551ba05bd44e66685f359802b35a8c9775792a12844906b4b53e1a000d56624c6db323754331c9f399072790991c1b256d9114a50fb78111652a1c973d2880af |
C:\ProgramData\Hdlharas\dlrarhsiva.exe
| MD5 | 64261d5f3b07671f15b7f10f2f78da3f |
| SHA1 | d4f978177394024bb4d0e5b6b972a5f72f830181 |
| SHA256 | 87f51b4632c5fbc351a59a234dfefef506d807f2c173aac23162b85d0d73c2ad |
| SHA512 | 3a9ff39e6bc7585b0b03f7327652e4c3b766563e8b183c25b6497e30956945add5684f1579862117e44c6bac2802601fc7c4d2a0daa1824f16c4da1fd6c9c91a |
memory/2392-34-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp
memory/2392-35-0x0000022315E60000-0x0000022316774000-memory.dmp
memory/2392-36-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp
memory/4688-38-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp
memory/2392-39-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp