Analysis Overview
SHA256
c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c
Threat Level: Known bad
The file c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c was found to be: Known bad.
Malicious Activity Summary
FakeAV payload
FakeAV, RogueAntivirus
Fakeav family
UPX packed file
Executes dropped EXE
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 behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-01-29 07:19
Signatures
FakeAV payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Fakeav family
Analysis: behavioral1
Detonation Overview
Submitted
2023-01-29 07:19
Reported
2023-01-29 07:22
Platform
win7-20221111-en
Max time kernel
132s
Max time network
103s
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 |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CSRLT.EXE = "C:\\Windows\\system32\\CSRLT.EXE" | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.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\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.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\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\CSRLT.EXE | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | N/A |
| File opened for modification | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | N/A |
| File created | C:\Windows\KeyGen.exe | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\KeyGen.exe | N/A |
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 584 wrote to memory of 1068 | N/A | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | C:\Windows\KeyGen.exe |
| PID 584 wrote to memory of 1068 | N/A | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | C:\Windows\KeyGen.exe |
| PID 584 wrote to memory of 1068 | N/A | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | C:\Windows\KeyGen.exe |
| PID 584 wrote to memory of 1068 | N/A | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | C:\Windows\KeyGen.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe
"C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe"
C:\Windows\KeyGen.exe
"C:\Windows\KeyGen.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 142.251.39.100:443 | tcp | |
| N/A | 142.251.39.100:443 | tcp | |
| N/A | 142.251.39.100:443 | tcp | |
| N/A | 142.251.39.100:443 | tcp | |
| N/A | 142.251.39.100:443 | tcp | |
| N/A | 142.251.39.100:443 | tcp | |
| N/A | 8.248.3.254:80 | tcp | |
| N/A | 8.248.3.254:80 | tcp | |
| N/A | 8.248.3.254:80 | tcp | |
| N/A | 8.248.3.254:80 | tcp |
Files
memory/584-54-0x0000000075881000-0x0000000075883000-memory.dmp
memory/1068-55-0x0000000000000000-mapping.dmp
C:\Windows\KeyGen.exe
| MD5 | e3c7d489013b51c671aa79c9068a2a00 |
| SHA1 | deed13e52afcc9fd2ef326fb6b0aa4bf7fcf14be |
| SHA256 | 5ea232ac5ebca4584f8689d5a1ed466404272a5c5496f41934537504368b5da2 |
| SHA512 | 18a31ffcc796d6352142374dc0e12d83b9b46d56069a5db26a38b0f6a133302f13d7064bfe9bc16e7a705aeeb2cec2d654863d92280a6085c8202a3c8096b240 |
memory/584-57-0x0000000002D20000-0x0000000002D3F000-memory.dmp
memory/584-58-0x0000000002D20000-0x0000000002D3F000-memory.dmp
memory/1068-59-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1068-60-0x0000000000400000-0x000000000041F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-01-29 07:19
Reported
2023-01-29 07:22
Platform
win10v2004-20221111-en
Max time kernel
135s
Max time network
148s
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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.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\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.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\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.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\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.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\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\CSRLT.EXE | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | N/A |
| File opened for modification | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | N/A |
| File created | C:\Windows\KeyGen.exe | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.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 4824 wrote to memory of 4604 | N/A | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | C:\Windows\KeyGen.exe |
| PID 4824 wrote to memory of 4604 | N/A | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | C:\Windows\KeyGen.exe |
| PID 4824 wrote to memory of 4604 | N/A | C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe | C:\Windows\KeyGen.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe
"C:\Users\Admin\AppData\Local\Temp\c6de3fa79c0bb19470aad864385cfebb068b4cacff7752dca4bc71f149a5d23c.exe"
C:\Windows\KeyGen.exe
"C:\Windows\KeyGen.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 8.238.20.126:80 | tcp | |
| N/A | 8.248.7.254:80 | tcp | |
| N/A | 20.190.159.4:443 | tcp | |
| N/A | 88.221.25.154:80 | tcp | |
| N/A | 88.221.25.154:80 | tcp | |
| N/A | 104.80.225.205:443 | tcp | |
| N/A | 20.50.73.9:443 | tcp | |
| N/A | 20.190.159.75:443 | tcp | |
| N/A | 8.248.7.254:80 | tcp | |
| N/A | 8.248.7.254:80 | tcp | |
| N/A | 8.248.7.254:80 | tcp | |
| N/A | 8.248.7.254:80 | tcp | |
| N/A | 8.248.7.254:80 | tcp |
Files
memory/4604-132-0x0000000000000000-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/4604-135-0x0000000000400000-0x000000000041F000-memory.dmp
memory/4604-136-0x0000000000400000-0x000000000041F000-memory.dmp