Analysis Overview
SHA256
73926cf57488263db6454fecf95436c25aa581ad1c353c135dc3d8e258be2f8d
Threat Level: Known bad
The file haao15.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 20:34
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2020-11-09 20:34
Reported
2020-11-10 21:14
Platform
win7v20201028
Max time kernel
150s
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\haao15.cab.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\haao15.cab.dll,#1
C:\Windows\SysWOW64\wscript.exe
wscript.exe //E:jscript "C:\Users\Public\anFJjtYxH.eB_c_
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
Network
Files
memory/1144-0-0x0000000000000000-mapping.dmp
memory/1668-1-0x0000000000000000-mapping.dmp
C:\Users\Public\anFJjtYxH.eB_c_
| MD5 | bf9cfe46e69997b0d8ac4ffb528ab0df |
| SHA1 | 399337ad73221675067a85f3251e31042886d536 |
| SHA256 | 395df3a563bc865221738b938998e6a45094f5c396302e4f151631e78aeb9d2d |
| SHA512 | f432a42d355d5ac058dd68660b9d0a7bd901eaf3b55fd184b3fb2c7b075523eca7e1262bc757fc2600934112fde781823d721a32754f87f6501f487b36b10fa9 |
memory/1668-3-0x00000000026B0000-0x00000000026B4000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2020-11-09 20:34
Reported
2020-11-10 21:14
Platform
win10v20201028
Max time kernel
149s
Max time network
145s
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 4684 wrote to memory of 4768 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4684 wrote to memory of 4768 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4684 wrote to memory of 4768 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4768 wrote to memory of 3980 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\wscript.exe |
| PID 4768 wrote to memory of 3980 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\wscript.exe |
| PID 4768 wrote to memory of 3980 | 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\haao15.cab.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\haao15.cab.dll,#1
C:\Windows\SysWOW64\wscript.exe
wscript.exe //E:jscript "C:\Users\Public\anFJjtYxH.eB_c_
C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
Network
Files
memory/4768-0-0x0000000000000000-mapping.dmp
memory/3980-1-0x0000000000000000-mapping.dmp
C:\Users\Public\anFJjtYxH.eB_c_
| MD5 | bf9cfe46e69997b0d8ac4ffb528ab0df |
| SHA1 | 399337ad73221675067a85f3251e31042886d536 |
| SHA256 | 395df3a563bc865221738b938998e6a45094f5c396302e4f151631e78aeb9d2d |
| SHA512 | f432a42d355d5ac058dd68660b9d0a7bd901eaf3b55fd184b3fb2c7b075523eca7e1262bc757fc2600934112fde781823d721a32754f87f6501f487b36b10fa9 |