Analysis Overview
SHA256
b1e5983b2cb7e5b79e15dfbf0c2264f590910cec07c3bf7696b85c89160602f5
Threat Level: Known bad
The file Valak (8).cab was found to be: Known bad.
Malicious Activity Summary
Valak
Valak JavaScript Loader
JavaScript code in executable
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2020-11-09 20:42
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2020-11-09 20:42
Reported
2020-11-10 23:33
Platform
win7v20201028
Max time kernel
54s
Max time network
11s
Command Line
Signatures
Valak
Valak JavaScript Loader
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
JavaScript code in executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Valak (8).cab.dll",#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Valak (8).cab.dll",#1
C:\Windows\SysWOW64\wscript.exe
wscript.exe //E:jscript "C:\Users\Public\CCGYPWTwr.iySAE
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
Network
Files
memory/1376-0-0x0000000000000000-mapping.dmp
memory/1584-1-0x0000000000000000-mapping.dmp
C:\Users\Public\CCGYPWTwr.iySAE
| MD5 | 6df4cb0a89bdabcf858e7e407e3975f5 |
| SHA1 | f41a9efe9f3cdce394893d90f564bb26e3cdd494 |
| SHA256 | c65b67bfe6a5acf6ebfb7f327a6ce8f93bfe5ec579fe783f611a73ce031f7232 |
| SHA512 | a49817c5b27a75263a57398a17f838e935660d554e6b36d8e11ec20817fd08b532851b527c7255d50556d85e1fa985ed0d766d7103f6178ab8ef8bab561b1a41 |
memory/1584-3-0x0000000002750000-0x0000000002754000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2020-11-09 20:42
Reported
2020-11-10 23:33
Platform
win10v20201028
Max time kernel
53s
Max time network
112s
Command Line
Signatures
Valak
Valak JavaScript Loader
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
JavaScript code in executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 508 wrote to memory of 3136 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 508 wrote to memory of 3136 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 508 wrote to memory of 3136 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3136 wrote to memory of 2992 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\wscript.exe |
| PID 3136 wrote to memory of 2992 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\wscript.exe |
| PID 3136 wrote to memory of 2992 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\wscript.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Valak (8).cab.dll",#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Valak (8).cab.dll",#1
C:\Windows\SysWOW64\wscript.exe
wscript.exe //E:jscript "C:\Users\Public\CCGYPWTwr.iySAE
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
Network
Files
memory/3136-0-0x0000000000000000-mapping.dmp
memory/2992-1-0x0000000000000000-mapping.dmp
C:\Users\Public\CCGYPWTwr.iySAE
| MD5 | 6df4cb0a89bdabcf858e7e407e3975f5 |
| SHA1 | f41a9efe9f3cdce394893d90f564bb26e3cdd494 |
| SHA256 | c65b67bfe6a5acf6ebfb7f327a6ce8f93bfe5ec579fe783f611a73ce031f7232 |
| SHA512 | a49817c5b27a75263a57398a17f838e935660d554e6b36d8e11ec20817fd08b532851b527c7255d50556d85e1fa985ed0d766d7103f6178ab8ef8bab561b1a41 |