Analysis Overview
SHA256
6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51
Threat Level: Known bad
The file 6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51 was found to be: Known bad.
Malicious Activity Summary
FakeAV, RogueAntivirus
FakeAV payload
Fakeav family
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 07:46
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 07:46
Reported
2022-12-03 12:57
Platform
win7-20220812-en
Max time kernel
36s
Max time network
42s
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 |
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\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.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\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.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\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.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\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\CSRLT.EXE | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | N/A |
| File opened for modification | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | N/A |
| File created | C:\Windows\KeyGen.exe | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.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 1764 wrote to memory of 2004 | N/A | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | C:\Windows\KeyGen.exe |
| PID 1764 wrote to memory of 2004 | N/A | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | C:\Windows\KeyGen.exe |
| PID 1764 wrote to memory of 2004 | N/A | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | C:\Windows\KeyGen.exe |
| PID 1764 wrote to memory of 2004 | N/A | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | C:\Windows\KeyGen.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe
"C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe"
C:\Windows\KeyGen.exe
"C:\Windows\KeyGen.exe"
Network
Files
memory/1764-54-0x0000000075FC1000-0x0000000075FC3000-memory.dmp
C:\Windows\KeyGen.exe
| MD5 | e3c7d489013b51c671aa79c9068a2a00 |
| SHA1 | deed13e52afcc9fd2ef326fb6b0aa4bf7fcf14be |
| SHA256 | 5ea232ac5ebca4584f8689d5a1ed466404272a5c5496f41934537504368b5da2 |
| SHA512 | 18a31ffcc796d6352142374dc0e12d83b9b46d56069a5db26a38b0f6a133302f13d7064bfe9bc16e7a705aeeb2cec2d654863d92280a6085c8202a3c8096b240 |
memory/2004-55-0x0000000000000000-mapping.dmp
memory/1764-57-0x0000000002D70000-0x0000000002D8F000-memory.dmp
memory/1764-58-0x0000000002D70000-0x0000000002D8F000-memory.dmp
memory/2004-59-0x0000000000400000-0x000000000041F000-memory.dmp
memory/2004-60-0x0000000000400000-0x000000000041F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-12-01 07:46
Reported
2022-12-03 12:56
Platform
win10v2004-20220901-en
Max time kernel
91s
Max time network
128s
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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.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\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.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\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.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\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.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\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\CSRLT.EXE | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.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\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | N/A |
| File created | C:\Windows\KeyGen.exe | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | N/A |
| File created | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.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 4896 wrote to memory of 1256 | N/A | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | C:\Windows\KeyGen.exe |
| PID 4896 wrote to memory of 1256 | N/A | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | C:\Windows\KeyGen.exe |
| PID 4896 wrote to memory of 1256 | N/A | C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe | C:\Windows\KeyGen.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe
"C:\Users\Admin\AppData\Local\Temp\6f391d0bef76a8f7474071dca5c1b04c869c1ced53f1f9ecf8bb5e5f1d86cc51.exe"
C:\Windows\KeyGen.exe
"C:\Windows\KeyGen.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 8.253.208.113:80 | tcp | |
| N/A | 2.18.109.224:443 | tcp | |
| N/A | 20.42.73.25:443 | tcp | |
| N/A | 87.248.202.1:80 | tcp | |
| N/A | 87.248.202.1:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp |
Files
memory/1256-132-0x0000000000000000-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/1256-135-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1256-136-0x0000000000400000-0x000000000041F000-memory.dmp