Analysis
- max time kernel
4294182s - max time network
120s - platform
windows7_x64 - resource
win7-20220310-en - submitted
17/03/2022, 13:55
General
- Target vbc.exe
- Size 427KB
- Sample220317-q769aaefc8
- SHA256 739e94a41234bd028fae27705c6d0ff5d8d9925068384bcdfe4cdecc1fb36e4f
Malware Config
Extracted
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xloader
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2.5
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e3b2
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treehousemunnar.com
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ipabulletin.com
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cures8t.com
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happy-news.biz
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cosmobellemedspa.com
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duplocreativo.com
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founderqlxwfh.online
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weinsteinanddouglas.com
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dowseteethalbee.com
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grandbowls.xyz
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strfolio.com
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agoradespossibles.com
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monarchap.com
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at7eleven.ink
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prayrowan.com
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mgc-taxconsultant.com
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virtuallyrhonda.com
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adobitssacv.com
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grouptuzun.com
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jdzqn.com
Signatures
- Xloader
Xloader is a rebranded version of Formbook malware.
- Xloader Payload 2 IoCs
- Uses the VBS compiler for execution 1 TTPs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 18 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\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\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\krFFLtFjhg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp313E.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1732 -s 363⤵
- Program crash
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1732-62-0x0000000000400000-0x0000000000429000-memory.dmp
memory/1732-64-0x0000000000400000-0x0000000000429000-memory.dmp
memory/1732-66-0x0000000000400000-0x0000000000429000-memory.dmp
memory/1924-54-0x0000000074CB0000-0x000000007539E000-memory.dmp
memory/1924-55-0x0000000000D60000-0x0000000000DD2000-memory.dmp
memory/1924-56-0x0000000004DA0000-0x0000000004DA1000-memory.dmp
memory/1924-57-0x000000007EF40000-0x000000007EF41000-memory.dmp
memory/1924-58-0x0000000000420000-0x000000000042A000-memory.dmp
memory/1924-59-0x0000000005DC0000-0x0000000005E3E000-memory.dmp
memory/1924-60-0x0000000000960000-0x0000000000990000-memory.dmp