Analysis Overview
SHA256
8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d
Threat Level: Known bad
The file 8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d was found to be: Known bad.
Malicious Activity Summary
FakeAV payload
Fakeav family
FakeAV, RogueAntivirus
Executes dropped EXE
UPX packed file
Checks computer location settings
Adds Run key to start application
Drops file in System32 directory
Drops file in Windows directory
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-12-01 01:30
Signatures
FakeAV payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Fakeav family
Analysis: behavioral1
Detonation Overview
Submitted
2022-12-01 01:30
Reported
2022-12-03 03:45
Platform
win7-20220812-en
Max time kernel
89s
Max time network
49s
Command Line
Signatures
FakeAV, RogueAntivirus
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\KeyGen.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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CSRLT.EXE = "C:\\Windows\\system32\\CSRLT.EXE" | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\MSBLT.EXE = "C:\\Windows\\MSBLT.EXE" | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\CSRLT.EXE | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\CSRLT.EXE | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\KeyGen.exe | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
| File created | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
| File opened for modification | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\KeyGen.exe | N/A |
| N/A | N/A | C:\Windows\KeyGen.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 888 wrote to memory of 1492 | N/A | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | C:\Windows\KeyGen.exe |
| PID 888 wrote to memory of 1492 | N/A | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | C:\Windows\KeyGen.exe |
| PID 888 wrote to memory of 1492 | N/A | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | C:\Windows\KeyGen.exe |
| PID 888 wrote to memory of 1492 | N/A | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | C:\Windows\KeyGen.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe
"C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe"
C:\Windows\KeyGen.exe
"C:\Windows\KeyGen.exe"
Network
Files
memory/888-54-0x0000000075281000-0x0000000075283000-memory.dmp
memory/888-55-0x0000000000670000-0x000000000068F000-memory.dmp
memory/1492-56-0x0000000000000000-mapping.dmp
C:\Windows\KeyGen.exe
| MD5 | e3c7d489013b51c671aa79c9068a2a00 |
| SHA1 | deed13e52afcc9fd2ef326fb6b0aa4bf7fcf14be |
| SHA256 | 5ea232ac5ebca4584f8689d5a1ed466404272a5c5496f41934537504368b5da2 |
| SHA512 | 18a31ffcc796d6352142374dc0e12d83b9b46d56069a5db26a38b0f6a133302f13d7064bfe9bc16e7a705aeeb2cec2d654863d92280a6085c8202a3c8096b240 |
memory/1492-58-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1492-59-0x0000000000400000-0x000000000041F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-12-01 01:30
Reported
2022-12-03 03:46
Platform
win10v2004-20220812-en
Max time kernel
190s
Max time network
230s
Command Line
Signatures
FakeAV, RogueAntivirus
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\KeyGen.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 |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CSRLT.EXE = "C:\\Windows\\system32\\CSRLT.EXE" | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\MSBLT.EXE = "C:\\Windows\\MSBLT.EXE" | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\CSRLT.EXE | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\CSRLT.EXE | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
| File created | C:\Windows\KeyGen.exe | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
| File created | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\KeyGen.exe | N/A |
| N/A | N/A | C:\Windows\KeyGen.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4160 wrote to memory of 4800 | N/A | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | C:\Windows\KeyGen.exe |
| PID 4160 wrote to memory of 4800 | N/A | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | C:\Windows\KeyGen.exe |
| PID 4160 wrote to memory of 4800 | N/A | C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe | C:\Windows\KeyGen.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe
"C:\Users\Admin\AppData\Local\Temp\8e7551bb7a16e8ed59b8a31b0f382675cd33cafbefa23093cdaf805d90ea908d.exe"
C:\Windows\KeyGen.exe
"C:\Windows\KeyGen.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 13.69.239.72:443 | tcp | |
| N/A | 209.197.3.8:80 | tcp | |
| N/A | 209.197.3.8:80 | tcp | |
| N/A | 40.125.122.151:443 | tcp | |
| N/A | 8.8.8.8:53 | 97.97.242.52.in-addr.arpa | udp |
Files
memory/4800-132-0x0000000000000000-mapping.dmp
C:\Windows\KeyGen.exe
| MD5 | e3c7d489013b51c671aa79c9068a2a00 |
| SHA1 | deed13e52afcc9fd2ef326fb6b0aa4bf7fcf14be |
| SHA256 | 5ea232ac5ebca4584f8689d5a1ed466404272a5c5496f41934537504368b5da2 |
| SHA512 | 18a31ffcc796d6352142374dc0e12d83b9b46d56069a5db26a38b0f6a133302f13d7064bfe9bc16e7a705aeeb2cec2d654863d92280a6085c8202a3c8096b240 |
C:\Windows\KeyGen.exe
| MD5 | e3c7d489013b51c671aa79c9068a2a00 |
| SHA1 | deed13e52afcc9fd2ef326fb6b0aa4bf7fcf14be |
| SHA256 | 5ea232ac5ebca4584f8689d5a1ed466404272a5c5496f41934537504368b5da2 |
| SHA512 | 18a31ffcc796d6352142374dc0e12d83b9b46d56069a5db26a38b0f6a133302f13d7064bfe9bc16e7a705aeeb2cec2d654863d92280a6085c8202a3c8096b240 |
memory/4800-135-0x0000000000400000-0x000000000041F000-memory.dmp
memory/4800-136-0x0000000000400000-0x000000000041F000-memory.dmp