Analysis Overview
SHA256
0387ab464a28a94f88f1689a34c69924938b784c13af830b59af0efd6fbb2ea5
Threat Level: Known bad
The file 0387ab464a28a94f88f1689a34c69924938b784c13af830b59af0efd6fbb2ea5 was found to be: Known bad.
Malicious Activity Summary
Valak JavaScript Loader
Valak family
Valak
JavaScript code in executable
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2020-11-09 20:42
Signatures
Valak JavaScript Loader
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Valak family
JavaScript code in executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2020-11-09 20:42
Reported
2020-11-10 23:32
Platform
win7v20201028
Max time kernel
133s
Max time network
123s
Command Line
Signatures
Valak
Valak JavaScript Loader
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0387ab464a28a94f88f1689a34c69924938b784c13af830b59af0efd6fbb2ea5.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\0387ab464a28a94f88f1689a34c69924938b784c13af830b59af0efd6fbb2ea5.dll
C:\Windows\SysWOW64\wscript.exe
wscript.exe //E:jscript "C:\Users\Admin\AppData\Local\Temp\syg.0 "
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
Network
Files
memory/1240-0-0x0000000000000000-mapping.dmp
memory/1292-1-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\syg.0
| MD5 | 470d495e3be204a63d434cba9c2ad2d0 |
| SHA1 | 93d22f0756e4dfb0c63973e78a20cef5c0144951 |
| SHA256 | cf18ccb923e1963d6df938f7fdb9c70277d19a0069f83d1c17b66bac06d672a6 |
| SHA512 | 86983ccec99bb4cff1bbbb40b0bc74129b72d8e6a23e9e7e2cb5ae2b16d2743de62ac801616321791c3b7e444f17547d1a96f3bd17d91f50454ace8445fa3c74 |
memory/1292-3-0x0000000002770000-0x0000000002774000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2020-11-09 20:42
Reported
2020-11-10 23:32
Platform
win10v20201028
Max time kernel
123s
Max time network
119s
Command Line
Signatures
Valak
Valak JavaScript Loader
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4704 wrote to memory of 4816 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4704 wrote to memory of 4816 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4704 wrote to memory of 4816 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4816 wrote to memory of 5060 | N/A | C:\Windows\SysWOW64\regsvr32.exe | C:\Windows\SysWOW64\wscript.exe |
| PID 4816 wrote to memory of 5060 | N/A | C:\Windows\SysWOW64\regsvr32.exe | C:\Windows\SysWOW64\wscript.exe |
| PID 4816 wrote to memory of 5060 | N/A | C:\Windows\SysWOW64\regsvr32.exe | C:\Windows\SysWOW64\wscript.exe |
Processes
C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0387ab464a28a94f88f1689a34c69924938b784c13af830b59af0efd6fbb2ea5.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\0387ab464a28a94f88f1689a34c69924938b784c13af830b59af0efd6fbb2ea5.dll
C:\Windows\SysWOW64\wscript.exe
wscript.exe //E:jscript "C:\Users\Admin\AppData\Local\Temp\s3ps.0 "
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
Network
Files
memory/4816-0-0x0000000000000000-mapping.dmp
memory/5060-1-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\s3ps.0
| MD5 | 470d495e3be204a63d434cba9c2ad2d0 |
| SHA1 | 93d22f0756e4dfb0c63973e78a20cef5c0144951 |
| SHA256 | cf18ccb923e1963d6df938f7fdb9c70277d19a0069f83d1c17b66bac06d672a6 |
| SHA512 | 86983ccec99bb4cff1bbbb40b0bc74129b72d8e6a23e9e7e2cb5ae2b16d2743de62ac801616321791c3b7e444f17547d1a96f3bd17d91f50454ace8445fa3c74 |