Technical Information
Malicious functions
Injects code into
the following system processes:
- %WINDIR%\syswow64\dllhost.exe
Searches for registry branches where third party applications store passwords
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook]
- [<HKCU>\Software\Martin Prikryl\WinSCP 2\Sessions\]
Reads files which store third party applications passwords
- %LOCALAPPDATA%\google\chrome\user data\default\cookies
- %LOCALAPPDATA%\google\chrome\user data\default\web data
Modifies file system
Creates the following files
- %TEMP%\2fda\api-ms-win-core-console-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-runtime-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-stdio-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-string-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-time-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-utility-l1-1-0.dll
- %TEMP%\2fda\freebl3.dll
- %TEMP%\2fda\mozglue.dll
- %TEMP%\2fda\msvcp140.dll
- %TEMP%\2fda\nss3.dll
- %TEMP%\2fda\nssdbm3.dll
- %TEMP%\2fda\softokn3.dll
- %TEMP%\2fda\ucrtbase.dll
- %TEMP%\2fda\vcruntime140.dll
- %TEMP%\11103289981628162524386.tmp
- %PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
- %TEMP%\1112265396495664532158.tmp
- %PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
- %PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
- %LOCALAPPDATA%\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol
- %TEMP%\11120317952505662437466.tmp
- %TEMP%\1112046893977565525617.tmp
- %TEMP%\11121255332345562808025.tmp
- %TEMP%\11121255332345562808025.tmp-shm
- %TEMP%\11121719779990746119956.tmp
- %TEMP%\111218719048606452775.tmp
- %TEMP%\111220366694837479740.tmp
- %TEMP%\1112218867466237510.tmp
- %TEMP%\11122184770207828704920.tmp
- %TEMP%\11122348762476212145273.tmp
- %TEMP%\111226513924752711841.tmp
- %TEMP%\2fda\api-ms-win-crt-process-l1-1-0.dll
- %TEMP%\11103594803487185562320.tmp
- %TEMP%\2fda\api-ms-win-crt-private-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-processthreads-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-datetime-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-debug-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-errorhandling-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-file-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-file-l1-2-0.dll
- %TEMP%\2fda\api-ms-win-core-file-l2-1-0.dll
- %TEMP%\2fda\api-ms-win-core-handle-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-heap-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-interlocked-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-libraryloader-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-localization-l1-2-0.dll
- %TEMP%\2fda\api-ms-win-core-memory-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-namedpipe-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-processenvironment-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-processthreads-l1-1-1.dll
- %TEMP%\2fda\api-ms-win-crt-math-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-profile-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-rtlsupport-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-string-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-synch-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-synch-l1-2-0.dll
- %TEMP%\2fda\api-ms-win-core-sysinfo-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-timezone-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-util-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-conio-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-convert-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-environment-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-filesystem-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-heap-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-locale-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-multibyte-l1-1-0.dll
- %TEMP%\1112265396495664532158.tmp-shm
Deletes the following files
- %TEMP%\11103289981628162524386.tmp
- %TEMP%\2fda\api-ms-win-core-rtlsupport-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-string-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-synch-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-synch-l1-2-0.dll
- %TEMP%\2fda\api-ms-win-core-sysinfo-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-timezone-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-util-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-conio-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-convert-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-environment-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-filesystem-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-heap-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-locale-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-multibyte-l1-1-0.dll
- %TEMP%\2fda\ucrtbase.dll
- %TEMP%\2fda\api-ms-win-crt-private-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-process-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-runtime-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-stdio-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-string-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-time-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-utility-l1-1-0.dll
- %TEMP%\2fda\freebl3.dll
- %TEMP%\2fda\mozglue.dll
- %TEMP%\2fda\msvcp140.dll
- %TEMP%\2fda\nss3.dll
- %TEMP%\2fda\nssdbm3.dll
- %TEMP%\2fda\softokn3.dll
- %TEMP%\2fda\api-ms-win-core-profile-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-crt-math-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-processthreads-l1-1-1.dll
- %TEMP%\1112265396495664532158.tmp
- %TEMP%\11103594803487185562320.tmp
- %TEMP%\11120317952505662437466.tmp
- %TEMP%\1112046893977565525617.tmp
- %TEMP%\11121255332345562808025.tmp-shm
- %TEMP%\11121255332345562808025.tmp
- %TEMP%\11121719779990746119956.tmp
- %TEMP%\111218719048606452775.tmp
- %TEMP%\111220366694837479740.tmp
- %TEMP%\1112218867466237510.tmp
- %TEMP%\11122184770207828704920.tmp
- %TEMP%\11122348762476212145273.tmp
- %TEMP%\111226513924752711841.tmp
- %TEMP%\1112265396495664532158.tmp-shm
- %TEMP%\2fda\api-ms-win-core-console-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-processenvironment-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-datetime-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-debug-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-errorhandling-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-file-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-file-l1-2-0.dll
- %TEMP%\2fda\api-ms-win-core-file-l2-1-0.dll
- %TEMP%\2fda\api-ms-win-core-handle-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-heap-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-interlocked-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-libraryloader-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-localization-l1-2-0.dll
- %TEMP%\2fda\api-ms-win-core-memory-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-namedpipe-l1-1-0.dll
- %TEMP%\2fda\api-ms-win-core-processthreads-l1-1-0.dll
- %TEMP%\2fda\vcruntime140.dll
Deletes itself.
Network activity
TCP
HTTP POST requests
- http://bt###nalitik.ru/index.php
UDP
- DNS ASK bt###nalitik.ru
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\cmd.exe' /c TimeOut 1 & Del /F "<Full path to file>"' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c <SYSTEM32>\timeout.exe 3 & del "dllhost.exe"' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\dllhost.exe'
- '%WINDIR%\syswow64\cmd.exe' /c TimeOut 1 & Del /F "<Full path to file>"
- '%WINDIR%\syswow64\timeout.exe' 1
- '%WINDIR%\syswow64\cmd.exe' /c <SYSTEM32>\timeout.exe 3 & del "dllhost.exe"
- '%WINDIR%\syswow64\timeout.exe' 3
