Resubmissions
15-03-2021 09:09
210315-2zntzgdr72 815-03-2021 08:51
210315-mj6e5pvb66 813-03-2021 17:09
210313-hrcfblnjbx 8Analysis
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max time kernel
61s -
max time network
151s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
13-03-2021 17:09
Static task
static1
Behavioral task
behavioral1
Sample
trash.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
trash.exe
Resource
win10v20201028
General
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Target
trash.exe
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Size
100KB
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MD5
7f5227030be3d2ef48aa652af1ec72b0
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SHA1
202e7ac1c2aaca8fbeed4ac454ca195a33c9d064
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SHA256
4dfc17406a58c6f1ce83a73ce6dd5b343d00fe77d07dfe21d28da13631bfad90
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SHA512
4603b758416dac60cb322aae6f3566711b6a4a9b657f6448861553b45b1c737fd3180d2b0bc169ef193a2372e89aba14a4d27a25e0a5eb440ed6c4afafe5f55c
Malware Config
Signatures
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Modifies extensions of user files 30 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
trash.exedescription ioc process File renamed C:\Users\Admin\Pictures\SelectGrant.crw => C:\Users\Admin\Pictures\SelectGrant.crw.8yrw3e trash.exe File renamed C:\Users\Admin\Pictures\DisconnectReset.tiff => C:\Users\Admin\Pictures\DisconnectReset.tiff.8yrw3e trash.exe File opened for modification C:\Users\Admin\Pictures\PublishJoin.tif.8yrw3e trash.exe File created C:\Users\Admin\Pictures\SelectGrant.crw.8yrw3e trash.exe File opened for modification C:\Users\Admin\Pictures\SelectGrant.crw.8yrw3e trash.exe File opened for modification C:\Users\Admin\Pictures\DisconnectReset.tiff.8yrw3e trash.exe File opened for modification C:\Users\Admin\Pictures\SearchRestart.raw.8yrw3e trash.exe File created C:\Users\Admin\Pictures\ExpandApprove.tif.8yrw3e trash.exe File created C:\Users\Admin\Pictures\WriteConfirm.crw.8yrw3e trash.exe File renamed C:\Users\Admin\Pictures\PublishJoin.tif => C:\Users\Admin\Pictures\PublishJoin.tif.8yrw3e trash.exe File created C:\Users\Admin\Pictures\SearchRestart.raw.8yrw3e trash.exe File renamed C:\Users\Admin\Pictures\SearchRestart.raw => C:\Users\Admin\Pictures\SearchRestart.raw.8yrw3e trash.exe File opened for modification C:\Users\Admin\Pictures\SubmitAdd.crw.8yrw3e trash.exe File created C:\Users\Admin\Pictures\BlockSwitch.crw.8yrw3e trash.exe File renamed C:\Users\Admin\Pictures\ExpandApprove.tif => C:\Users\Admin\Pictures\ExpandApprove.tif.8yrw3e trash.exe File renamed C:\Users\Admin\Pictures\SubmitAdd.crw => C:\Users\Admin\Pictures\SubmitAdd.crw.8yrw3e trash.exe File renamed C:\Users\Admin\Pictures\WriteConfirm.crw => C:\Users\Admin\Pictures\WriteConfirm.crw.8yrw3e trash.exe File renamed C:\Users\Admin\Pictures\BlockSwitch.crw => C:\Users\Admin\Pictures\BlockSwitch.crw.8yrw3e trash.exe File renamed C:\Users\Admin\Pictures\SetRevoke.crw => C:\Users\Admin\Pictures\SetRevoke.crw.8yrw3e trash.exe File opened for modification C:\Users\Admin\Pictures\ExpandApprove.tif.8yrw3e trash.exe File created C:\Users\Admin\Pictures\PublishJoin.tif.8yrw3e trash.exe File created C:\Users\Admin\Pictures\ResizeBackup.raw.8yrw3e trash.exe File renamed C:\Users\Admin\Pictures\ResizeBackup.raw => C:\Users\Admin\Pictures\ResizeBackup.raw.8yrw3e trash.exe File created C:\Users\Admin\Pictures\SubmitAdd.crw.8yrw3e trash.exe File opened for modification C:\Users\Admin\Pictures\WriteConfirm.crw.8yrw3e trash.exe File opened for modification C:\Users\Admin\Pictures\BlockSwitch.crw.8yrw3e trash.exe File created C:\Users\Admin\Pictures\DisconnectReset.tiff.8yrw3e trash.exe File opened for modification C:\Users\Admin\Pictures\SetRevoke.crw.8yrw3e trash.exe File opened for modification C:\Users\Admin\Pictures\ResizeBackup.raw.8yrw3e trash.exe File created C:\Users\Admin\Pictures\SetRevoke.crw.8yrw3e trash.exe -
Drops startup file 2 IoCs
Processes:
trash.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini.8yrw3e trash.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini.8yrw3e trash.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
trash.exedescription pid process target process PID 3812 set thread context of 3924 3812 trash.exe trash.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
trash.exepid process 3812 trash.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
trash.exedescription pid process target process PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe PID 3812 wrote to memory of 3924 3812 trash.exe trash.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\trash.exe"C:\Users\Admin\AppData\Local\Temp\trash.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\trash.exeC:\Users\Admin\AppData\Local\Temp\trash2⤵
- Modifies extensions of user files
- Drops startup file
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/3924-4-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3924-5-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3924-6-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3924-7-0x0000000000413000-mapping.dmp
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memory/3924-9-0x0000000000020000-0x0000000000021000-memory.dmpFilesize
4KB
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memory/3924-8-0x0000000000413000-0x0000000000414000-memory.dmpFilesize
4KB
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memory/3924-10-0x0000000000413000-0x0000000000414000-memory.dmpFilesize
4KB