Analysis
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max time kernel
122s -
max time network
122s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
14-12-2021 13:47
Static task
static1
Behavioral task
behavioral1
Sample
tmp/vbc.exe
Resource
win7-en-20211208
General
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Target
tmp/vbc.exe
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Size
1.4MB
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MD5
3668f9be040098859e662ba94616cc51
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SHA1
3b3ec4ac86c462747a2190c33ca2a4588fcc9310
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SHA256
b190c0b66428b594f7507ae98fcc45e1907cb9cdf618919002791241ae94280f
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SHA512
54fa8de69114af4fc8ccfa5ef11a82587d3b74b5fa80e6e8d1683e5ce997db5d6ffc1b133ebcf97c226c2aad928696198392faaf184486685f0aa2a048a43dd3
Malware Config
Extracted
matiex
https://api.telegram.org/bot1769394961:AAF5BB35akL859CwVaXypIqpVsGWlaKvi7A/sendMessage?chat_id=1735544933
Signatures
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Matiex Main Payload 4 IoCs
Processes:
resource yara_rule behavioral1/memory/1152-64-0x0000000000400000-0x0000000000476000-memory.dmp family_matiex behavioral1/memory/1152-65-0x0000000000400000-0x0000000000476000-memory.dmp family_matiex behavioral1/memory/1152-66-0x0000000000400000-0x0000000000476000-memory.dmp family_matiex behavioral1/memory/1152-67-0x000000000047032E-mapping.dmp family_matiex -
Uses the VBS compiler for execution 1 TTPs
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Suspicious use of SetThreadContext 1 IoCs
Processes:
vbc.exedescription pid process target process PID 1676 set thread context of 1152 1676 vbc.exe vbc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
vbc.exepowershell.exepid process 1676 vbc.exe 1676 vbc.exe 376 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
vbc.exepowershell.exedescription pid process Token: SeDebugPrivilege 1676 vbc.exe Token: SeDebugPrivilege 376 powershell.exe -
Suspicious use of WriteProcessMemory 25 IoCs
Processes:
vbc.exevbc.exedescription pid process target process PID 1676 wrote to memory of 376 1676 vbc.exe powershell.exe PID 1676 wrote to memory of 376 1676 vbc.exe powershell.exe PID 1676 wrote to memory of 376 1676 vbc.exe powershell.exe PID 1676 wrote to memory of 376 1676 vbc.exe powershell.exe PID 1676 wrote to memory of 864 1676 vbc.exe schtasks.exe PID 1676 wrote to memory of 864 1676 vbc.exe schtasks.exe PID 1676 wrote to memory of 864 1676 vbc.exe schtasks.exe PID 1676 wrote to memory of 864 1676 vbc.exe schtasks.exe PID 1676 wrote to memory of 960 1676 vbc.exe vbc.exe PID 1676 wrote to memory of 960 1676 vbc.exe vbc.exe PID 1676 wrote to memory of 960 1676 vbc.exe vbc.exe PID 1676 wrote to memory of 960 1676 vbc.exe vbc.exe PID 1676 wrote to memory of 1152 1676 vbc.exe vbc.exe PID 1676 wrote to memory of 1152 1676 vbc.exe vbc.exe PID 1676 wrote to memory of 1152 1676 vbc.exe vbc.exe PID 1676 wrote to memory of 1152 1676 vbc.exe vbc.exe PID 1676 wrote to memory of 1152 1676 vbc.exe vbc.exe PID 1676 wrote to memory of 1152 1676 vbc.exe vbc.exe PID 1676 wrote to memory of 1152 1676 vbc.exe vbc.exe PID 1676 wrote to memory of 1152 1676 vbc.exe vbc.exe PID 1676 wrote to memory of 1152 1676 vbc.exe vbc.exe PID 1152 wrote to memory of 788 1152 vbc.exe dw20.exe PID 1152 wrote to memory of 788 1152 vbc.exe dw20.exe PID 1152 wrote to memory of 788 1152 vbc.exe dw20.exe PID 1152 wrote to memory of 788 1152 vbc.exe dw20.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\tmp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\tmp\vbc.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SOEtXbQzHDdq.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SOEtXbQzHDdq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD098.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\tmp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\tmp\vbc.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\tmp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\tmp\vbc.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exedw20.exe -x -s 3923⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpD098.tmpMD5
1c20c402328236b8f537f03941a5c5ee
SHA1bbba074825084206786d9e8445d2af3b95f11fbe
SHA256358405d244c4cba7911bd0af159936038dab857ca2ea47d344af319e13aec157
SHA51262cf55dc21d6a9965c0d890fa1b3eb12a37a470bdaeb634ad11562f9bfa0cfa5b8699acfaceded8bd048e4ec3becd6a13ca5e639868a5f6c79ca41935487488a
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memory/376-73-0x0000000002481000-0x0000000002482000-memory.dmpFilesize
4KB
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memory/376-58-0x0000000000000000-mapping.dmp
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memory/376-74-0x0000000002482000-0x0000000002484000-memory.dmpFilesize
8KB
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memory/376-72-0x0000000002480000-0x0000000002481000-memory.dmpFilesize
4KB
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memory/788-69-0x0000000000000000-mapping.dmp
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memory/788-75-0x0000000002480000-0x0000000002481000-memory.dmpFilesize
4KB
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memory/864-59-0x0000000000000000-mapping.dmp
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memory/1152-64-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/1152-65-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/1152-66-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/1152-67-0x000000000047032E-mapping.dmp
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memory/1152-63-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/1152-71-0x0000000000900000-0x0000000000901000-memory.dmpFilesize
4KB
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memory/1152-62-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/1676-55-0x0000000075DF1000-0x0000000075DF3000-memory.dmpFilesize
8KB
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memory/1676-57-0x00000000001D1000-0x00000000001D2000-memory.dmpFilesize
4KB
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memory/1676-56-0x00000000001D0000-0x00000000001D1000-memory.dmpFilesize
4KB