Analysis Overview
SHA256
84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b
Threat Level: Known bad
The file 84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b 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 WriteProcessMemory
Suspicious use of SetWindowsHookEx
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 12:22
Platform
win7-20220901-en
Max time kernel
42s
Max time network
47s
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\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.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\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.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\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.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\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\CSRLT.EXE | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\KeyGen.exe | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | N/A |
| File created | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | N/A |
| File opened for modification | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.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 992 wrote to memory of 592 | N/A | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | C:\Windows\KeyGen.exe |
| PID 992 wrote to memory of 592 | N/A | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | C:\Windows\KeyGen.exe |
| PID 992 wrote to memory of 592 | N/A | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | C:\Windows\KeyGen.exe |
| PID 992 wrote to memory of 592 | N/A | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | C:\Windows\KeyGen.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe
"C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe"
C:\Windows\KeyGen.exe
"C:\Windows\KeyGen.exe"
Network
Files
memory/992-54-0x0000000076561000-0x0000000076563000-memory.dmp
memory/592-55-0x0000000000000000-mapping.dmp
C:\Windows\KeyGen.exe
| MD5 | e3c7d489013b51c671aa79c9068a2a00 |
| SHA1 | deed13e52afcc9fd2ef326fb6b0aa4bf7fcf14be |
| SHA256 | 5ea232ac5ebca4584f8689d5a1ed466404272a5c5496f41934537504368b5da2 |
| SHA512 | 18a31ffcc796d6352142374dc0e12d83b9b46d56069a5db26a38b0f6a133302f13d7064bfe9bc16e7a705aeeb2cec2d654863d92280a6085c8202a3c8096b240 |
memory/992-57-0x0000000001FE0000-0x0000000001FFF000-memory.dmp
memory/992-58-0x0000000001FE0000-0x0000000001FFF000-memory.dmp
memory/592-59-0x0000000000400000-0x000000000041F000-memory.dmp
memory/592-60-0x0000000000400000-0x000000000041F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-12-01 07:46
Reported
2022-12-03 12:22
Platform
win10v2004-20220812-en
Max time kernel
84s
Max time network
143s
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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.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\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.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\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.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\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\CSRLT.EXE | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | N/A |
| File created | C:\Windows\SysWOW64\CSRLT.EXE | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\KeyGen.exe | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | N/A |
| File created | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | N/A |
| File opened for modification | C:\Windows\MSBLT.EXE | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.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 2440 wrote to memory of 4904 | N/A | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | C:\Windows\KeyGen.exe |
| PID 2440 wrote to memory of 4904 | N/A | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | C:\Windows\KeyGen.exe |
| PID 2440 wrote to memory of 4904 | N/A | C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe | C:\Windows\KeyGen.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe
"C:\Users\Admin\AppData\Local\Temp\84f1733a3efb8dd690c7c7437b967f16a0688d3b4b074e7851a056cdebf6333b.exe"
C:\Windows\KeyGen.exe
"C:\Windows\KeyGen.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 93.184.221.240:80 | tcp |
Files
memory/4904-132-0x0000000000000000-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/4904-135-0x0000000000400000-0x000000000041F000-memory.dmp
memory/4904-136-0x0000000000400000-0x000000000041F000-memory.dmp