Analysis
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max time kernel
190s -
max time network
198s -
platform
windows10-2004_x64 -
resource
win10v2004-20220721-en -
resource tags
arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system -
submitted
31-07-2022 05:14
Static task
static1
Behavioral task
behavioral1
Sample
inf.exe
Resource
win7-20220715-en
Behavioral task
behavioral2
Sample
inf.exe
Resource
win10v2004-20220721-en
General
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Target
inf.exe
-
Size
1.3MB
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MD5
73dea1a75637e14f6fcd012fe2815636
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SHA1
f1edca0d6464b76bc4956352571d8941c02d2c4e
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SHA256
fd03dd58aa7cb5236f4df8cde3fb07af304c6f402cd48b86eefcecb8e7b86883
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SHA512
f6dc462194037a5c4e0b186088f1fd75befe4cb88bf1dcc7477987951332fc18f8aa66389d567e01677990b022fea6849a66a24510027794e12e2a517edde8d0
Malware Config
Extracted
C:\README1.txt
http://cryptsen7fo43rr6.onion/
http://cryptsen7fo43rr6.onion.to/
http://cryptsen7fo43rr6.onion.cab/
Extracted
C:\README2.txt
http://cryptsen7fo43rr6.onion/
http://cryptsen7fo43rr6.onion.to/
http://cryptsen7fo43rr6.onion.cab/
Extracted
C:\README3.txt
http://cryptsen7fo43rr6.onion/
http://cryptsen7fo43rr6.onion.to/
http://cryptsen7fo43rr6.onion.cab/
Extracted
C:\README4.txt
http://cryptsen7fo43rr6.onion/
http://cryptsen7fo43rr6.onion.to/
http://cryptsen7fo43rr6.onion.cab/
Extracted
C:\README5.txt
http://cryptsen7fo43rr6.onion/
http://cryptsen7fo43rr6.onion.to/
http://cryptsen7fo43rr6.onion.cab/
Extracted
C:\README6.txt
http://cryptsen7fo43rr6.onion/
http://cryptsen7fo43rr6.onion.to/
http://cryptsen7fo43rr6.onion.cab/
Extracted
C:\README7.txt
http://cryptsen7fo43rr6.onion/
http://cryptsen7fo43rr6.onion.to/
http://cryptsen7fo43rr6.onion.cab/
Extracted
C:\README8.txt
http://cryptsen7fo43rr6.onion/
http://cryptsen7fo43rr6.onion.to/
http://cryptsen7fo43rr6.onion.cab/
Extracted
C:\README9.txt
http://cryptsen7fo43rr6.onion/
http://cryptsen7fo43rr6.onion.to/
http://cryptsen7fo43rr6.onion.cab/
Extracted
C:\README10.txt
http://cryptsen7fo43rr6.onion/
http://cryptsen7fo43rr6.onion.to/
http://cryptsen7fo43rr6.onion.cab/
Signatures
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Troldesh, Shade, Encoder.858
Troldesh is a ransomware spread by malspam.
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resource yara_rule behavioral2/memory/516-132-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral2/memory/516-131-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral2/memory/516-133-0x0000000000400000-0x0000000000608000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ inf.exe Set value (str) \REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Client Server Runtime Subsystem = "\"C:\\ProgramData\\Windows\\csrss.exe\"" inf.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 35 IoCs
description ioc Process File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\status.json inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\playlist.json inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\browse.json inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\js\ui.js inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\js\controllers.js inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\images\Audio-48.png inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\dialogs\create_stream.html inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\plugins\plugins.dat inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\playlist_jstree.xml inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\dialogs\equalizer_window.html inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\skins\skin.dtd inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\images\speaker-32.png inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\dialogs\stream_window.html inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\dialogs\error_window.html inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\images\vlc16x16.png inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\images\vlc-48.png inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\browse.xml inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\images\Folder-48.png inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\dialogs\mosaic_window.html inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\dialogs\browse_window.html inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\skins\winamp2.xml inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\playlist.xml inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\images\buttons.png inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\dialogs\batch_window.html inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\images\Other-48.png inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\images\Back-48.png inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\dialogs\offset_window.html inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\status.xml inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\js\jquery.jstree.js inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\README.txt inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\js\common.js inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\images\Video-48.png inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\dialogs\stream_config_window.html inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\vlm_cmd.xml inf.exe File opened for modification C:\Program Files\VideoLAN\VLC\lua\http\requests\vlm.xml inf.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2740 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 516 inf.exe 516 inf.exe 516 inf.exe 516 inf.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 3960 vssvc.exe Token: SeRestorePrivilege 3960 vssvc.exe Token: SeAuditPrivilege 3960 vssvc.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 516 wrote to memory of 2740 516 inf.exe 96 PID 516 wrote to memory of 2740 516 inf.exe 96
Processes
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C:\Users\Admin\AppData\Local\Temp\inf.exe"C:\Users\Admin\AppData\Local\Temp\inf.exe"1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:516 -
C:\Windows\system32\vssadmin.exeC:\Windows\system32\vssadmin.exe List Shadows2⤵
- Interacts with shadow copies
PID:2740
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3960