Trojan.Siggen8.52819

Technical Information

To ensure autorun and distribution

Creates or modifies the following files

%APPDATA%\microsoft\windows\start menu\programs\startup\jdcit0jmnsbj6lif.exe

Malicious functions

Injects code into

the following user processes:

9657.tmp.exe
9b69.tmp.exe
bb66.tmp.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
%HOMEPATH%\desktop\applicantform_en.doc
%HOMEPATH%\desktop\hanni_umami_chapter.doc

Modifies file system

Creates the following files

%APPDATA%\9657.tmp.exe
%TEMP%\13272344719152022929288.tmp
%TEMP%\13272036001872918119016.tmp
%TEMP%\5c61adbd\vcruntime140.dll
%TEMP%\5c61adbd\ucrtbase.dll
%TEMP%\5c61adbd\softokn3.dll
%TEMP%\5c61adbd\nssdbm3.dll
%TEMP%\5c61adbd\api-ms-win-crt-process-l1-1-0.dll
%TEMP%\5c61adbd\nss3.dll
%TEMP%\5c61adbd\mozglue.dll
%TEMP%\5c61adbd\freebl3.dll
%TEMP%\5c61adbd\api-ms-win-crt-utility-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-time-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-string-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-stdio-l1-1-0.dll
%TEMP%\5c61adbd\msvcp140.dll
%TEMP%\5c61adbd\api-ms-win-crt-runtime-l1-1-0.dll
%PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
%TEMP%\13295466333967379236380.tmp
%TEMP%\13305462395101465175132.tmp-shm
%TEMP%\13305462395101465175132.tmp
%TEMP%\1330515728364388761475.tmp
%TEMP%\132992162706642531731.tmp
%TEMP%\13298909098951884651835.tmp
%TEMP%\13298756799479950702525.tmp
%PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
%PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
%TEMP%\13295313531484355673191.tmp
%TEMP%\13294848079568645851253.tmp-shm
%TEMP%\13294848079568645851253.tmp
%TEMP%\13294216014934518865625.tmp
%TEMP%\13294065978652572498106.tmp
%LOCALAPPDATA%\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol
%TEMP%\13295627459219462387893.tmp
%TEMP%\5c61adbd\api-ms-win-crt-private-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-multibyte-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-math-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-libraryloader-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-interlocked-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-heap-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-handle-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-file-l2-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-memory-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-file-l1-2-0.dll
%TEMP%\5c61adbd\api-ms-win-core-errorhandling-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-debug-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-datetime-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-console-l1-1-0.dll
%APPDATA%\bb66.tmp.exe
%APPDATA%\9b69.tmp.exe
%TEMP%\5c61adbd\api-ms-win-core-file-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-namedpipe-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-localization-l1-2-0.dll
%TEMP%\5c61adbd\api-ms-win-core-processenvironment-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-locale-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-timezone-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-heap-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-filesystem-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-environment-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-convert-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-conio-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-util-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-sysinfo-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-processthreads-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-synch-l1-2-0.dll
%TEMP%\5c61adbd\api-ms-win-core-synch-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-string-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-rtlsupport-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-profile-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-processthreads-l1-1-1.dll
%TEMP%\13588596972453259367182.tmp-shm
%TEMP%\13590008242392165656092.tmp-shm

Deletes the following files

%TEMP%\13272036001872918119016.tmp
%TEMP%\5c61adbd\api-ms-win-core-synch-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-synch-l1-2-0.dll
%TEMP%\5c61adbd\api-ms-win-core-sysinfo-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-timezone-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-util-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-conio-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-convert-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-environment-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-filesystem-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-heap-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-locale-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-math-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-multibyte-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-private-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-runtime-l1-1-0.dll
%TEMP%\13590008242392165656092.tmp-shm
%TEMP%\5c61adbd\api-ms-win-crt-stdio-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-string-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-time-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-utility-l1-1-0.dll
%TEMP%\5c61adbd\freebl3.dll
%TEMP%\5c61adbd\mozglue.dll
%TEMP%\5c61adbd\msvcp140.dll
%TEMP%\5c61adbd\nss3.dll
%TEMP%\5c61adbd\nssdbm3.dll
%TEMP%\5c61adbd\softokn3.dll
%TEMP%\5c61adbd\ucrtbase.dll
%TEMP%\5c61adbd\vcruntime140.dll
%APPDATA%\9657.tmp.exe
%TEMP%\13588596972453259367182.tmp-shm
%TEMP%\5c61adbd\api-ms-win-core-string-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-process-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-rtlsupport-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-console-l1-1-0.dll
%TEMP%\13272344719152022929288.tmp
%TEMP%\13294065978652572498106.tmp
%TEMP%\13294216014934518865625.tmp
%TEMP%\13294848079568645851253.tmp-shm
%TEMP%\13294848079568645851253.tmp
%TEMP%\13295313531484355673191.tmp
%TEMP%\13295466333967379236380.tmp
%TEMP%\13295627459219462387893.tmp
%TEMP%\13298756799479950702525.tmp
%TEMP%\13298909098951884651835.tmp
%TEMP%\132992162706642531731.tmp
%TEMP%\1330515728364388761475.tmp
%TEMP%\13305462395101465175132.tmp-shm
%TEMP%\13305462395101465175132.tmp
%TEMP%\5c61adbd\api-ms-win-core-datetime-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-processthreads-l1-1-1.dll
%TEMP%\5c61adbd\api-ms-win-core-debug-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-errorhandling-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-file-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-file-l1-2-0.dll
%TEMP%\5c61adbd\api-ms-win-core-file-l2-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-handle-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-heap-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-interlocked-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-libraryloader-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-localization-l1-2-0.dll
%TEMP%\5c61adbd\api-ms-win-core-memory-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-namedpipe-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-processenvironment-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-processthreads-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-profile-l1-1-0.dll
%APPDATA%\bb66.tmp.exe

Substitutes the following files

%TEMP%\5c61adbd\api-ms-win-core-console-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-environment-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-filesystem-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-heap-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-locale-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-math-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-multibyte-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-private-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-process-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-conio-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-convert-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-runtime-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-time-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-utility-l1-1-0.dll
%TEMP%\5c61adbd\freebl3.dll
%TEMP%\5c61adbd\mozglue.dll
%TEMP%\5c61adbd\msvcp140.dll
%TEMP%\5c61adbd\nss3.dll
%TEMP%\5c61adbd\nssdbm3.dll
%TEMP%\5c61adbd\softokn3.dll
%TEMP%\5c61adbd\api-ms-win-crt-stdio-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-crt-string-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-util-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-timezone-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-sysinfo-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-debug-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-errorhandling-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-file-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-file-l1-2-0.dll
%TEMP%\5c61adbd\api-ms-win-core-file-l2-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-handle-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-heap-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-interlocked-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-libraryloader-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-datetime-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-localization-l1-2-0.dll
%TEMP%\5c61adbd\api-ms-win-core-namedpipe-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-processenvironment-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-processthreads-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-processthreads-l1-1-1.dll
%TEMP%\5c61adbd\api-ms-win-core-profile-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-rtlsupport-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-string-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-synch-l1-1-0.dll
%TEMP%\5c61adbd\api-ms-win-core-synch-l1-2-0.dll
%TEMP%\5c61adbd\api-ms-win-core-memory-l1-1-0.dll
%TEMP%\5c61adbd\ucrtbase.dll
%TEMP%\5c61adbd\vcruntime140.dll

Deletes itself.

Network activity

TCP

HTTP GET requests

http://wa###ystem.com/file1.exe
http://wa###ystem.com/file2.exe
http://wa###ystem.com/file3.exe
http://wa###ystem.com/file4.exe
http://wa###ystem.com/file5.exe

HTTP POST requests

http://wa###ystem.com/index.php

'ip###ger.org':443

UDP

DNS ASK wa###ystem.com
DNS ASK ip###ger.org

Miscellaneous

Creates and executes the following

'%APPDATA%\9657.tmp.exe'
'%APPDATA%\9b69.tmp.exe'
'%APPDATA%\bb66.tmp.exe'
'%WINDIR%\syswow64\cmd.exe' /c <SYSTEM32>\timeout.exe 3 & del "9657.tmp.exe"' (with hidden window)
'%WINDIR%\syswow64\cmd.exe' /c ping 127.0.0.1 && del "<Full path to file>" >> NUL' (with hidden window)
'%WINDIR%\syswow64\cmd.exe' /c <SYSTEM32>\timeout.exe 3 & del "BB66.tmp.exe"' (with hidden window)

Executes the following

'%WINDIR%\syswow64\cmd.exe' /c <SYSTEM32>\timeout.exe 3 & del "9657.tmp.exe"
'%WINDIR%\syswow64\timeout.exe' 3
'%WINDIR%\syswow64\cmd.exe' /c ping 127.0.0.1 && del "<Full path to file>" >> NUL
'%WINDIR%\syswow64\ping.exe' 127.0.0.1
'%WINDIR%\syswow64\cmd.exe' /c <SYSTEM32>\timeout.exe 3 & del "BB66.tmp.exe"

テクノロジー

用語

トレーニングコースおよび啓蒙プロジェクト

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