Analysis
- max time kernel
148s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
03/05/2022, 14:29
General
- Target vbc.exe
- Size 991KB
- Sample220503-rtj29shcb2
- SHA256 d91d04a052c74e24823eeeeec79d14cf3a5bcdd50ca4867d0cffd5a6188085d7
Malware Config
Extracted
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xloader
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2.5
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apju
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fbqxzz.icu
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kinokosuke.com
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psychosoziale-beratung.com
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covermydreamhome.com
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livingartpodcast.com
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simonavallone.com
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spaedymafra.com
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royzoom.com
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classiccuisinetci.com
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itechnology.tech
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range4tis.com
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rehab-infoweb.net
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rebeccawsapp.com
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azenkabestmid.info
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change0913.com
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efilux.com
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aprendesobre.com
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relokators.com
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reditastore.com
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3424soldbastrophwy.com
Signatures
- Xloader
Xloader is a rebranded version of Formbook malware.
- suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Xloader Payload 3 IoCs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Uses the VBS compiler for execution 1 TTPs
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of SetThreadContext 4 IoCs
- Enumerates system info in registry 2 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 6 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\vbc.exe"2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\RMActivate_ssp.exe"C:\Windows\SysWOW64\RMActivate_ssp.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\chkdsk.exe"C:\Windows\SysWOW64\chkdsk.exe"2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe/c del "C:\Windows\SysWOW64\RMActivate_ssp.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1472-131-0x0000000005140000-0x00000000056E4000-memory.dmp
memory/1472-132-0x0000000004C90000-0x0000000004D22000-memory.dmp
memory/1472-133-0x0000000004DD0000-0x0000000004E6C000-memory.dmp
memory/1472-134-0x0000000006920000-0x0000000006986000-memory.dmp
memory/1472-130-0x0000000000200000-0x00000000002FE000-memory.dmp
memory/1724-143-0x0000000001120000-0x0000000001131000-memory.dmp
memory/1724-136-0x0000000000400000-0x000000000042A000-memory.dmp
memory/1724-138-0x0000000000400000-0x000000000042A000-memory.dmp
memory/1724-139-0x0000000001160000-0x00000000014AA000-memory.dmp
memory/1724-140-0x0000000000BB0000-0x0000000000BC1000-memory.dmp
memory/3032-141-0x00000000085B0000-0x000000000867D000-memory.dmp
memory/3032-144-0x0000000008A80000-0x0000000008BF8000-memory.dmp
memory/3032-151-0x0000000003400000-0x00000000034B9000-memory.dmp
memory/3684-146-0x0000000000E60000-0x0000000000E6A000-memory.dmp
memory/3684-147-0x00000000003A0000-0x00000000003C9000-memory.dmp
memory/3684-149-0x0000000000E70000-0x00000000011BA000-memory.dmp
memory/3684-150-0x0000000000B10000-0x0000000000BA0000-memory.dmp