Analysis
- max time kernel
150s - max time network
153s - platform
windows10_x64 - resource
win10v20210408 - submitted
17/06/2021, 10:01
General
- Target brsi.exe
- Size 213KB
- Sample210617-23m344pmde
- SHA256 ba02b1ff767d07fbcd13529b70ce92a08238ef31bdfc4058b23023fc8176d26b
Malware Config
Extracted
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xloader
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2.3
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http://www.gmjewelryy.com/kmb0/
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omoservice.com
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thesapphirepavement.net
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marrickekofigane.com
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hallyujob.com
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e97ut.com
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christiporter.com
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bdxlmj.com
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telekomfaturalitarife.com
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wisdombuddy.com
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puestopro.com
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businessfuel.online
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thelocaldoc.com
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spycreep.com
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digitechkey.com
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ch1now1ll4ms.xyz
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dailytelinc.com
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frameq.com
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energycommerz.com
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tratamentoparaquedadecabelo.com
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vegipa.com
Signatures
- Xloader
Xloader is a rebranded version of Formbook malware.
- Xloader Payload 2 IoCs
- Loads dropped DLL 2 IoCs
- Suspicious use of SetThreadContext 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 7 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\brsi.exe"C:\Users\Admin\AppData\Local\Temp\brsi.exe"2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\brsi.exe"C:\Users\Admin\AppData\Local\Temp\brsi.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\autochk.exe"C:\Windows\SysWOW64\autochk.exe"2⤵
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C:\Windows\SysWOW64\autochk.exe"C:\Windows\SysWOW64\autochk.exe"2⤵
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C:\Windows\SysWOW64\autochk.exe"C:\Windows\SysWOW64\autochk.exe"2⤵
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C:\Windows\SysWOW64\autochk.exe"C:\Windows\SysWOW64\autochk.exe"2⤵
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C:\Windows\SysWOW64\autochk.exe"C:\Windows\SysWOW64\autochk.exe"2⤵
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C:\Windows\SysWOW64\autochk.exe"C:\Windows\SysWOW64\autochk.exe"2⤵
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C:\Windows\SysWOW64\autochk.exe"C:\Windows\SysWOW64\autochk.exe"2⤵
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C:\Windows\SysWOW64\autochk.exe"C:\Windows\SysWOW64\autochk.exe"2⤵
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C:\Windows\SysWOW64\autochk.exe"C:\Windows\SysWOW64\autochk.exe"2⤵
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C:\Windows\SysWOW64\autochk.exe"C:\Windows\SysWOW64\autochk.exe"2⤵
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C:\Windows\SysWOW64\svchost.exe"C:\Windows\SysWOW64\svchost.exe"2⤵
- Suspicious use of SetThreadContext
- 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:\Users\Admin\AppData\Local\Temp\brsi.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1576-121-0x00000000006F0000-0x0000000000700000-memory.dmp
memory/1576-119-0x00000000006B0000-0x00000000006C0000-memory.dmp
memory/1576-118-0x0000000000B80000-0x0000000000EA0000-memory.dmp
memory/1576-117-0x0000000000400000-0x0000000000428000-memory.dmp
memory/2740-129-0x00000000058E0000-0x00000000059C7000-memory.dmp
memory/2740-120-0x00000000056E0000-0x00000000057E1000-memory.dmp
memory/2740-122-0x00000000057F0000-0x00000000058DF000-memory.dmp
memory/3724-125-0x0000000000280000-0x000000000028C000-memory.dmp
memory/3724-127-0x0000000003200000-0x000000000334A000-memory.dmp
memory/3724-128-0x00000000036B0000-0x000000000373F000-memory.dmp
memory/3724-126-0x0000000002FD0000-0x0000000002FF8000-memory.dmp