Technical Information
To ensure autorun and distribution
Creates or modifies the following files
- %APPDATA%\microsoft\windows\start menu\programs\startup\vierjsgb.lnk
- <SYSTEM32>\tasks\opera scheduled autoupdate 3131961357
Malicious functions
Downloads and executes
- https://u.teknik.io/pax4f.txt as %temp%\tmdvjj.exe
Injects code into
the following system processes:
- <SYSTEM32>\taskeng.exe
the following user processes:
- vrhvtrjh.exe
Hooks functions
in browsers
- iexplore.exe process, wininet.dll module
Reads files which store third party applications passwords
- %APPDATA%\mozilla\firefox\profiles.ini
- %LOCALAPPDATA%\google\chrome\user data\default\login data
- %APPDATA%\opera software\opera stable\login data
- %APPDATA%\thunderbird\profiles.ini
Modifies file system
Creates the following files
- %TEMP%\tmdvjj.exe
- %APPDATA%\microsoft\windows\vierjsgb\vrhvtrjh.exe
- %APPDATA%\microsoft\windows\vierjsgb\vierjsgb
- %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
- %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
- %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
- %LOCALAPPDATA%\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol
- %TEMP%\4308.tmp
- %TEMP%\4309.tmp
- %TEMP%\4339.tmp
- %TEMP%\433a.tmp
Sets the 'hidden' attribute to the following files
- %APPDATA%\microsoft\windows\vierjsgb\vrhvtrjh.exe
- %APPDATA%\microsoft\windows\vierjsgb\vierjsgb
Deletes the following files
- %TEMP%\tmdvjj.exe
- %TEMP%\4308.tmp
- %TEMP%\4309.tmp
- %TEMP%\4339.tmp
- %TEMP%\433a.tmp
Network activity
Connects to
- 'u.##knik.io':443
- 'ms###csi.com':80
- 'al###stwork.com':80
TCP
HTTP POST requests
- http://al###stwork.com/0/
UDP
- DNS ASK u.##knik.io
- DNS ASK al###stwork.com
Miscellaneous
Creates and executes the following
- '%TEMP%\tmdvjj.exe'
- '%APPDATA%\microsoft\windows\vierjsgb\vrhvtrjh.exe'
- '%APPDATA%\microsoft\windows\vierjsgb\vrhvtrjh.exe' ' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\explorer.exe'
- '%WINDIR%\explorer.exe'
- '<SYSTEM32>\taskeng.exe' {3D0A918D-0A95-4E45-AE1A-0D3CECE06B89} S-1-5-21-1960123792-2022915161-3775307078-1001:rcanlrujk\user:Interactive:[1]
