Analysis Overview
SHA256
d46a8fa545385ab42ca58f6175b13f4b9989d88322ab624f646623b4a52a4876
Threat Level: Known bad
The file chrosha.exe was found to be: Known bad.
Malicious Activity Summary
Amadey
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Identifies Wine through registry keys
Executes dropped EXE
Checks BIOS information in registry
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in Windows directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-20 14:07
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-20 14:07
Reported
2024-05-20 14:09
Platform
win7-20240221-en
Max time kernel
117s
Max time network
118s
Command Line
Signatures
Amadey
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
Identifies Wine through registry keys
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Wine | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Tasks\chrosha.job | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\chrosha.exe
"C:\Users\Admin\AppData\Local\Temp\chrosha.exe"
Network
Files
memory/2076-0-0x0000000000B50000-0x0000000001003000-memory.dmp
memory/2076-1-0x0000000076FD0000-0x0000000076FD2000-memory.dmp
memory/2076-2-0x0000000000B51000-0x0000000000B7F000-memory.dmp
memory/2076-3-0x0000000000B50000-0x0000000001003000-memory.dmp
memory/2076-5-0x0000000000B50000-0x0000000001003000-memory.dmp
memory/2076-10-0x0000000000B50000-0x0000000001003000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-20 14:07
Reported
2024-05-20 14:09
Platform
win10v2004-20240426-en
Max time kernel
147s
Max time network
148s
Command Line
Signatures
Amadey
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe | N/A |
Identifies Wine through registry keys
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Software\Wine | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Software\Wine | C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Tasks\chrosha.job | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\chrosha.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\chrosha.exe
"C:\Users\Admin\AppData\Local\Temp\chrosha.exe"
C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe
C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| RU | 193.233.132.167:80 | tcp | |
| RU | 193.233.132.167:80 | tcp | |
| US | 8.8.8.8:53 | 144.142.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 45.19.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| RU | 193.233.132.167:80 | tcp | |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| RU | 193.233.132.167:80 | tcp | |
| 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 | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| RU | 193.233.132.167:80 | tcp | |
| US | 8.8.8.8:53 | 104.246.116.51.in-addr.arpa | udp |
| RU | 193.233.132.167:80 | tcp |
Files
memory/2336-0-0x0000000000DD0000-0x0000000001283000-memory.dmp
memory/2336-1-0x0000000077444000-0x0000000077446000-memory.dmp
memory/2336-3-0x0000000000DD0000-0x0000000001283000-memory.dmp
memory/2336-2-0x0000000000DD1000-0x0000000000DFF000-memory.dmp
memory/2336-5-0x0000000000DD0000-0x0000000001283000-memory.dmp
memory/2336-10-0x0000000000DD0000-0x0000000001283000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe
| MD5 | 73d73c48859fc7aa4fd78d9a57f859d6 |
| SHA1 | c1f71ea0692d97c653ff5a5ecbc03fd02173fe05 |
| SHA256 | d46a8fa545385ab42ca58f6175b13f4b9989d88322ab624f646623b4a52a4876 |
| SHA512 | f0634be539582016c03e83f3ca58d613fc16abcc0a9c320321f455234a8f2dc1c199fc52187abac5e4cbbe7b7907afdaa89813f50cbecd611f7e870ee7f8e979 |
memory/64-13-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-14-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-15-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-16-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-17-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-18-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-19-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-20-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-21-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-22-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-23-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-24-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-25-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-26-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-27-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-28-0x0000000000940000-0x0000000000DF3000-memory.dmp
memory/64-29-0x0000000000940000-0x0000000000DF3000-memory.dmp